LK1001-9ERD7TB2_技术文档

Cassette Style

150 Watt AC-DC Converters

K Series

150 Watt AC-DC (DC-DC) Converters

for 400 Hz Mains

K Series

Input voltage range from 85...255 V AC

1 or 2 isolated outputs up to 48 V DC

4 kV AC I/O electric strength test voltage

• Input frequency range 47...440 Hz

• No PFC

• Extremely wide input voltage range

• Input over- and undervoltage lock-out

• Efficient input filter and built-in surge and transient

suppression circuitry

• Fully isolated outputs

• Outputs overload, open- and short-circuit proof

• No derating over entire operating temperature range

111

4.4"

3 U

Safety according to IEC/EN 60950

LGA

80

168

6.6"

3.2"

16 TE

Summary

The K series of AC-DC (DC-DC) converters represents a

flexible range of power supplies for use in advanced elec-

tronic systems. Features include wide input frequency

range (no PFC), high efficiency, high reliability, low output

voltage noise and excellent dynamic response to load/line

changes.

IEC/EN 60950 and have been approved by the safety

agencies LGA (Germany) und UL (USA). The UL Mark for

Canada has been officially recognized by regulatory au-

thorities in provinces across Canada.

The case design allows operation at nominal load up to

71°C in a free air ambient temperature. If forced cooling is

provided, the ambient temperature may exceed 71°C but

the case temperature must remain below 95°C under all

conditions.

The converter inputs are protected against surges and tran-

sients occuring at the source lines. An input over- and

undervoltage lock-out circuitry disables the outputs if the

input voltage is outside the specified range. Certain types

include an inrush current limitation preventing circuit break-

ers and fuses from being damaged at switch-on.

A temperature sensor generates an inhibit signal which

disables the outputs if the case temperature T_Cexceeds the

limit. The outputs are automatically re-enabled when the

temperature drops below the limit.

All outputs are open- and short-circuit proof and are pro-

tected against overvoltages by means of a built-in suppres-

sor diode. The outputs can be inhibited by a logic signal ap-

plied to the connector pin 18 (i). If the inhibit function is not

used pin 18 must be connected to pin 14 to enable the out-

puts.

Various options are available to adapt the converters to in-

dividual applications.

The modules may either be plugged into 19" rack systems

according to DIN 41494, or be chassis mounted.

LED indicators display the status of the converter and allow

visual monitoring of the system at any time.

Important: For applications with requirements for com-

pliance with IEC/EN 61000-3-2 (harmonic distortion)

please use our LK 4000 and LK 5000 series.

Full input to output, input to case, output to case and output

to output isolation is provided. The modules are designed

and built according to the international safety standards

Table of Contents

Page

Summary .......................................................................... 1

Type Survey and Key Data .............................................. 2

Type Key .......................................................................... 2

Functional Description...................................................... 3

Electrical Input Data ......................................................... 4

Electrical Output Data ...................................................... 5

Auxiliary Functions ......................................................... 10

Electromagnetic Compatibility (EMC) ............................ 13

Immunity to Environmental Conditions........................... 15

Mechanical Data ............................................................ 16

Safety and Installation Instructions ................................ 17

Description of Options.................................................... 20

Accessories .................................................................... 26

Edition 01/01.2001

1/26

Cassette Style

150 Watt AC-DC Converters

K Series

Type Survey and Key Data

Non standard input/output configuration or special custom adaptions are available on request. See also: Commercial Infor-

mation: Inquiry Form for Customized Power Supply.

Table 1: Type survey LK

Output 1

Output 2

Input voltage range and efficiency ¹

Options

U_{o nom}

[V DC]

I_{o nom}

[A] ²

U_{o nom}

[V DC]

I_{o nom}

[A] ²

U_{i min}...U_{i max}

85…264 V AC (88...372 V DC)

h_min

[%]

¹Efficiency at U_{i nom}and I_{o nom}

.

5.1

25.0

12.0

10.0

6.0

-

LK 1001-7R

LK 1301-7R

LK 1501-7R

LK 1601-7R

79

84

85

-9

E

D

V ⁵

P

T

B1

B2

²If the output voltages are increased

above U_{o nom}via R-input control, op-

tion P setting, remote sensing or op-

tion T, the output currents should be

reduced accordingly so that P_{o nom}

is not exceeded.

12.0

15.0

24.0

24.0 ³

30.0 ³

48.0 ³

6.0

5.0

3.0

-

LK 2320-7R

LK 2540-7R

LK 2660-7R

81

83

³Series connection of output 1 and 2,

see: R-Function for different output

configurations.

12.0

15.0

24.0

6.0

5.0

3.0

12.0 ⁴

15.0 ⁴

24.0 ⁴

6.0

5.0

3.0

LK 2320-7R

LK 2540-7R

LK 2660-7R

81

83

⁴Second output semi-regulated.

⁵Option V for LK 1001 types only.

Type Key

L K 2 5 40 -7 E R P D V T B1

Input voltage range U_i: 85…264 V AC (88...372 V DC).... L

Series ...............................................................................K

Number of outputs....................................................... 1...2

Single output units:

Nominal voltage output 1 (main output), U_{o1 nom}

5.1 V........................................................ 0, 1, 2

12 V ................................................................. 3

15 V ............................................................. 4, 5

24 V ................................................................. 6

other voltages.............................................. 7, 8

Other specs. for single output modules .................. 01...99

Symmetrical double output units:

Nominal voltage output 1/output 2, U_{o1/2 nom}

12 V/12 V (24 V series connection)............... 20 ¹

15 V/15 V (30 V series connection)............... 40 ¹

24 V/24 V (48 V series connection)............... 60 ¹

other symmetrical voltages .................... 70...99

Ambient temperature range T_A:

–25…71°C ..................................................... -7

–40…71°C ..................................................... -9

customer specific .....................................-0...-6

Auxiliary functions and options:

Inrush current limitation ...................................E

Output voltage control input ........................... R ²

Potentiometer (output voltage adjustment) ..... P ²

Save data signal (D0...DD, to be specified) ... D ³

ACFAIL signal (V0, V2, V3, to be specified) ...V ^{3, 4}

Current sharing ............................................... T

Cooling plate standard case .........................B1

Cooling plate for long case 220 mm .............B2

¹External wiring of main and second output depending upon the desired output configuration (see: R-Function for different output con-

figurations).

²Feature R excludes option P and vice versa.

³Option D excludes option V and vice versa.

⁴Option V available for LK 1001 types.

Example: LK 2540-7PD3: AC-DC converter, input voltage range 85...264 V AC, double output, each providing 15 V/5 A,

equipped with potentiometer and undervoltage monitoring option. Ambient temperature –25...71°C.

Edition 01/01.2001

2/26

Cassette Style

150 Watt AC-DC Converters

K Series

Functional Description

age U_o1and generates, with respect to the maximum ad-

missible output currents, the control signal for the primary

switching transistor.

The input voltage is fed via an input fuse, an input filter, a

rectifier and an inrush current limiter to the input capacitor.

This capacitor sources a single transistor forward con-

verter. Each output is powered by a separate secondary

winding of the main transformer. The resultant voltages are

rectified and their ripples smoothed by a power choke and

output filter. The control logic senses the main output volt-

The second output of double output units is controlled by

the main output but has independent current limiting. If the

main output is driven into current limitation, the second out-

put voltage will fall as well and vice versa.

P

03085

16 R

18 i

20 D/V

22 T

Y

26

28

N

1

3

12 S+

4

6

Y

Vo+

8

Vo–

10

2

30

32

P

14 S–

Y

24

–

+

Fig. 1

Block diagram of single output converters LK 1000

P

03086

16 R

18 i

20 D

22 T

26

28

Y

N

1

3

Y

12 Vo1+

14 Vo1–

4

Y

2

Vo2+

6

30

32

P

8

10

Vo2–

Y

24

–

+

Fig. 2

Block diagram of symmetrical double output converters LK 2000

¹Transient suppressor (VDR)

²Inrush current limiter (NTC or option E), -9 version exclude the NTC

³Input fuse

Edition 01/01.2001

3/26

Cassette Style

150 Watt AC-DC Converters

K Series

Electrical Input Data

General Conditions

– T_A= 25°C, unless T_Cis specified.

– Pin 18 connected to pin 14, U_oadjusted to U_{o nom}(option P); R input not connected.

– Sense line pins S+ and S– connected to Vo+ and Vo– respectively.

Table 2: Input data

¹With double output modules, both outputs

loaded with I_{o nom}

Input

LK

²Valid for -7 versions with NTC, (-9 versions ex-

clude the NTC). Initial switch-on cycle. Subse-

quent switch-on/off cycles increase the inrush

current peak value.

Characteristics

Conditions

min

85

typ

max

264

372

Unit

U_i

Operating input voltage I_o= 0…I_{o nom}

T_{C min}…T_{C max}

V AC

88

V DC

3

³LK types may also be operated in DC mode.

(See: K Series, DC-DC Converters)

U_{i nom}Nominal input voltage

310

0.4

1

I_i

Input current

U_{i nom}, I_{o nom}

A

P_i0

P_{i inh}

R_i

No-load input power

Idle input power

Input resistance

U_{i min}…U_{i max}

unit inhibited

T_C= 25°C

2.5

1.5

W

480

3200

210

mΩ

µF

R_NTCNTC resistance ²

C_iInput capacitance

AC frequency range 47...440 Hz (440 Hz

for 115 V mains).

400

Above 70 Hz (at U_i= 264 V AC) the earth

lekage current may exceed 3.5 mA, speci-

fied in IEC/EN 60950. The built-in Y ca-

pacitors are specified for ≤100 Hz. Above

350 Hz the input voltage may not exceed

200 V AC.

U_{i RFI}Conducted input RFI

Radiated input RFI

EN 55022

U_{i nom}, I_{o nom}

B

U_{i abs}Input voltage limits

without damage

–400

400

V DC

V_p

Inrush Current Peak Value

Input Fuse

A fuse mounted inside the converter protects the module

against severe defects. If operated from a DC source this

fuse may not fully protect the module when the input volt-

age exceeds 200 V DC! In applications where the convert-

ers operate at source voltages above 200 V DC an external

fuse or a circuit breaker at system level should be installed!

The inrush current peak value (initial switch-on cycle) can

be determined by following calculation: (See also: Input In-

rush Current Characteristic).

U_{i source}

I_{inr p}= ––––––––––––––––

(R_{s ext}+ R_i+ R_NTC

)

04040

Table 3: Fuse Specification

R_{s ext}

I_{inr p}

R_i

R_NTC

Module

Fuse type

Fuse rating

LK ¹

slow-blow

SPT

4 A, 250 V

+

U_{i source}

C_{i int}

¹Fuse size 5 × 20 mm.

Input Under-/Overvoltage Lock-out

If the input voltage remains below approx. 0.8 U_{i min}or ex-

ceeds approx. 1.1 U_{i max}, an internally generated inhibit sig-

nal disables the output(s). When checking this function the

absolute maximum input voltage rating U_{i abs}should be

considered! Between U_{i min}and the undervoltage lock-out

level the output voltage may be below the value defined in

table: Output data (see: Technical Information: Measuring

and Testing).

Fig. 3

Equivalent circuit diagram for input impedance

Static Input Current Characteristic

I_i(A)

04048

3.00

Reverse Polarity Protection

The built-in bridge rectifier provides reverse polarity protec-

tion at the input.

1.00

0.40

Inrush Current Limitation

The modules of the versions -7 incorporate an NTC resistor

in the input circuitry which – at initial turn on – reduces the

peak inrush current value by a factor of 5...10 to protect

connectors and switching devices from damage. Subse-

quent switch-on cycles within short periods will cause an

increase of the peak inrush current value due to the warm-

ing-up of the NTC resistor. (see also: option E)

U_iDC

_______

U_{i min}DC

1

2

3

4

5

6

Fig. 4

Input current versus relative input voltage

Edition 01/01.2001

4/26

Cassette Style

150 Watt AC-DC Converters

K Series

Input Transient Protection

Input Inrush Current Characteristic

A VDR together with the input fuse and a symmetrical input

filter form an effective protection against high input tran-

sient voltages.

I_imp[A]

04050

130

Hold-up Time versus relative Input Voltage

100

t_h(ms)

04049

100.00

50

0

10.00

U_iAC

_______

2.00

2

3

t [ms]

U_{i min}AC

1

2

3

4

5

6

Fig. 6

Inrush current versus time at U_{i max}, R_ext= 0

Fig. 5

Hold-up time t_hversus relative input voltage U_i/U_{i min}

.

Electrical Output Data

General Conditions

– T_A= 25°C, unless T_Cis specified.

– Pin 18 (i) connected to pin 14 (S–/Vo1–), U_oadjusted to U_{o nom}(option P), R input not connected.

– Sense line pin 12 (S+) and pin 14 (S–) connected to pin 4 (Vo+) and pin 8 (Vo–) respectively.

Table 4a: Output data single output modules

Output

LK 1001

5.1 V

LK 1301

12.0 V

LK 1501

15.0 V

LK 1601

24.0 V

Characteristics

Conditions

min typ max min typ max min typ max min typ max Unit

U_o

Output voltage

U_{i nom}, I_{o nom}

5.07

5.13 11.93

12.07 14.91

15.09 23.86

24.14

V

U_op

Overvoltage protection

(supressor diode)

7.6

21

26.5

10

43.5

6.0

I_{o nom}Output current ¹

U_{i min}...U_{i max}

T_{C min}...T_{C max}

25.0

12.0

A

I_oL

u_o

Output current limit ⁴

U_{i min}...U_{i max}

26

12.2

10.2

6.2

7

Output Low frequency U_{i nom}, I_{o nom}

5

mV

pp

voltage

noise

IEC/EN 61204

BW = 20 MHz

Switching freq.

Total

50

70

60

90

DU_{o U}Static line regulation

U_{i min}...U_{i nom}

U_{i nom}...U_{i max}

,

±15

±25

±30

±30 mV

I_{o nom}

DU_{o I}Static load regulation

U_{i nom}, I_o=

(0.1...1) I_{o nom}

20

25

30

40

5

u_{o d}

Dynamic Voltage

U_{i nom}, I_o=

±100

±80

load

deviation

I

_{o nom}↔ ¹/

2

I_{o nom}

regulat.

IEC/EN 61204

5

t_d

Recovery time

0.3

0.4

ms

a_Uo

Temperature coefficient U_{i min}...U_{i max}

of output voltage ⁶

0...I_{o nom}

–1

mV/K

¹If the output voltages are increased above U_{o nom}through R-input control, option P setting, remote sensing or option T, the output cur-

rents should be reduced accordingly so that P_{o nom}is not exceeded.

⁴See: Output Voltage Regulation of Single Output Units or Double Output Modules with Outputs 1 and 2 Connected in Series.

⁵See: Dynamic load regulation of U_o1and U_o2.

⁶Negative temperature coefﬁcient (0...–3 mV/cell and K) available on request.

⁷Measured according to IEC/EN 61204 sub clause 3.10 with a probe acc. to annex A of the same standards. (See:Technical Informa-

tion: Measuring and Testing)

Edition 01/01.2001

5/26

Cassette Style

150 Watt AC-DC Converters

K Series

Table 4b: Output data double output modules

Output

LK 2320

LK 2540

LK 2660

(Outputs connected in Series)

24 V (2 × 12 V)

30 V (2 × 15 V)

48 V (2 × 24 V)

Characteristics

Conditions

min

typ

24.0 ²

38

max

min

typ

30.0 ²

48

max

min

typ

48.0 ²

74

max

Unit

V

U_o

Output voltage

U_{i nom}, I_{o nom}

U_op

Overvoltage protection

(supressor diode)

I_{o nom}Output current ¹

U_{i min}...U_{i max}

T_{C min}...T_{C max}

6.0

5.0

3.0

A

I_oL

u_o

Output current limit ⁴

U_{i min}...U_{i max}

6.2

5.2

3.2

7

Output Low frequency U_{i nom}, I_{o nom}

5

mV_pp

voltage

noise ³

IEC/EN 61204

BW = 20 MHz

Switching freq.

Total

80

±40

80

±30

90

±50

DU_{o U}Static line regulation

U_{i min}...U_{i nom}

U_{i nom}...U_{i max}

I_{o nom}

mV

DU_{o I}Static load regulation

U_{i nom}, I_o=

(0.1...1) I_{o nom}

40

30

40

5

u_{o d}

Dynamic Voltage

U_{i nom}, I_o=

±140

±90

load

deviation

I

_{o nom}↔ ¹/

2

I_{o nom}

regulat.

IEC/EN 61204

5

t_d

Recovery time

0.2

ms

a_Uo

Temperature coefficient U_{i min}...U_{i max}

of output voltage ⁶

0...I_{o nom}

–2.2

–2.6

mV/K

¹If the output voltages are increased above U_{o nom}through R-input control, option P setting, remote sensing or option T, the output cur-

rents should be reduced accordingly so that P_{o nom}is not exceeded.

²Series connection for U_{o nom}= 24 V, 30 V or 48 V, see: R-Function for different output configurations.

³Shortest possible wiring for series connection at the connector.

⁴See: Output Voltage Regulation of Single Output Units or Double Output Modules with Outputs 1 and 2 Connected in Series.

⁵See: Dynamic load regulation of U₀₁and U_02.

⁶Negative temperature coefﬁcient (0...–3 mV/cell and K) available on request.

⁷Measured according to IEC/EN 61204 sub clause 3.10 with a probe acc. to annex A of the same standards. (See:Technical Informa-

tion: Measuring and Testing)

Edition 01/01.2001

6/26

Cassette Style

150 Watt AC-DC Converters

K Series

Table 4c: Output data double output modules

Output

LK 2320

12 V/12 V

LK 2540

15 V/15 V

(Outputs independently loaded) ¹

Characteristics

Conditions

Output 1

Output 2

Output 1

Output 2

min typ max min typ max min typ max min typ max Unit

2

U_o

Output voltage

U_{i nom}, I_{o nom}

11.93

12.07 11.82

12.18 14.91

15.09 14.78

15.22

V

A

U_op

Overvoltage protection

(supressor diode)

19

24

I_{o nom}Output current ³

U_{i min}...U_{i max}

T_{C min}...T_{C max}

6.0

5.0

I_oL

u_o

Output current limit ⁴

U_{i min}...U_{i max}

6.2

5.2

8

Output Low frequency U_{i nom}, I_{o nom}

3

mV_pp

voltage

noise

IEC/EN 61204

BW = 20 MHz

Switching freq.

Total

40

25

50

20

DU_{o U}Static line regulation

U_{i min}...U_{i nom}

U_{i nom}...U_{i max}

I_{o nom}

±30

±40

±30

±40 mV

5

DU_{o I}Static load regulation

U_{i nom}, I_o=

(0.1...1) I_{o nom}

100

5

6

u_{o d}

Dynamic Voltage

U_{i nom}, I_o=

±80

load

deviation

I

_{o nom}↔ ¹/

2

I_{o nom}

regulat.

IEC/EN 61204

6

t_d

Recovery time

0.2

ms

a_Uo

Temperature coefficient U_{i min}...U_{i max}

of output voltage ⁷

0...I_{o nom}

–1.1

mV/K

Table 4d: Output data double output modules

Output

LK 2660

24 V/24 V

¹Depending upon the desired output

configuration the wiring should be

made as shown in: R-Function for

different output configurations.

²Same conditions for both outputs.

³If the control voltages are in-

creased above U_{o nom}via R-input

control, option P setting, remote

sensing or option T, the output cur-

rents should be reduced accord-

ingly so that P_{o nom}is not ex-

ceeded.

(Outputs independently loaded) ¹

Characteristics

Conditions

Output 1

Output 2

min typ max min typ max Unit

2

U_o

Output voltage

U_{i nom}, I_{o nom}

23.86

24.14 23.64

24.36

V

A

U_op

Overvoltage protection

(supressor diode)

37

I_{o nom}Output current ³

U_{i min}...U_{i max}

T_{C min}...T_{C max}

3.0

I_oL

u_o

Output current limit ⁴

U_{i min}...U_{i max}

3.2

⁴See: Output voltage regulation of

single output units.

8

Output Low frequency U_{i nom}, I_{o nom}

3

mV_pp

⁵Condition for specified output.

Other output loaded with constant

current I_o= I_{o nom}. See: Output volt-

age regulation of double output

modules with output 1 and 2 in

symmetrical configuration.

voltage

noise

IEC/EN 61204

BW = 20 MHz

Switching freq.

Total

50

20

DU_{o U}Static line regulation

U_{i min}...U_{i nom}

U_{i nom}...U_{i max}

I_{o nom}

,

±30

±50 mV

⁶See: Typical dynamic load regula-

5

tion of U_o1and U_o2

.

DU_{o I}Static load regulation

U_{i nom}, I_o=

(0.1...1) I_{o nom}

50

⁷Negative temperature coefficient

(0....–3 mV/cell and K) available on

request.

5

6

u_{o d}

Dynamic Voltage

U_{i nom}, I_o=

±50

load

deviation

I

_{o nom}↔ ¹/

2

I_{o nom}

⁸Measured according to IEC/EN

61204 sub clause 3.10 with a

probe acc. to annex A of the same

standards. (See: Technical Infor-

mation: Measuring and Testing.)

regulat.

IEC/EN 61204

6

t_d

Recovery time

0.2

ms

a_Uo

Temperature coefficient U_{i min}...U_{i max}

of output voltage ⁷

0...I_{o nom}

-1.3

mV/K

Edition 01/01.2001

7/26

Cassette Style

150 Watt AC-DC Converters

K Series

Thermal Considerations

Parallel or Series Connection of Units

If a converter is located in free, quasi-stationary air (con-

vection cooling) at the indicated maximum ambient tem-

perature T_{A max}(see table: Temperature specifications) and

is operated at its nominal input voltage and output power,

the temperature measured at the Measuring point of case

temperature T_C(see: Mechanical Data) will approach the

indicated value T_{C max}after the warm-up phase. However,

the relationship between T_Aand T_Cdepends heavily on the

conditions of operation and integration into a system. The

thermal conditions are influenced by input voltage, output

current, airflow and temperature of surrounding compo-

Single or double output units with equal nominal output volt-

age can be connected in parallel without any precautions

using option T.

With option T (current sharing), all units share the current

approximately equally.

Single output units and/or main and second outputs of dou-

ble output units can be connected in series with any other

(similar) output.

Note:

– Parallel connection of double output units should always

include both, main and second output to maintain good

regulation of both outputs.

nents and surfaces. T_{A max}is therefore, contrary to T_{C max}

,

an indicative value only.

– Not more than 5 units should be connected in parallel.

– Series connection of second outputs without involving

their main outputs should be avoided as regulation may

be poor.

Caution: The installer must ensure that under all operat-

ing conditions T_Cremains within the limits stated in the

table: Temperature specifications.

– The maximum output current is limited by the output with

the lowest current limitation if several outputs are con-

nected in series.

Notes: Sufficient forced cooling or an additional heat sink

allows T_Ato be higher than 71°C (e.g. 85°C) if T_{C max}is not

exceeded.

05072

For -7 or -9 units at an ambient temperature T_Aof 85°C with

only convection cooling, the maximum permissible current

for each output is approx. 40% of its nominal value as per

figure.

U_o1

U_o1d

U_r

U_o1d

I_o/I_{o nom}

t_d

Zwangsbelüftung

t

1.0

U_o2

0.9

0.8

0.7

U_o2d

Konvektionskühlung

0.6

T_{C max}

I_o1/I_{o1 nom}

I_o2/I_{o2 nom}

0.5

1

0.4

0.3

0.2

0.1

0.5

0

<10 µs

t

0

T [°C]

A

Fig. 8

Control deviation of u_{o1/2 d}vs. dynamic load change.

T

50

60

70

80

90

100

A min

Fig. 7

Output Voltage Regulation of Single or Double Output

Modules with Outputs1 and 2 Connected in Series

Output current derating versus temperature for –7 and –9.

Thermal Protection

U_o

A temperature sensor generates an internal inhibit signal

which disables the outputs if the case temperature exceeds

T_{C max}. The outputs are automatically re-enabled if the tem-

perature drops below this limit.

05068

U_{o nom}

0.98

It is recommended that continuous operation under simul-

taneous extreme worst case conditions of the following

three parameters be avoided: Minimum input voltage,

maximum output power and maximum temperature.

0.5

I_o1

I_oL

Output Protection

Each output is protected against overvoltage which could

occur due to a failure of the control circuit by means of a

voltage suppressor diode which, under worst case condi-

tions, may become a short circuit. The suppressor diodes

are not designed to withstand externally applied over-

voltages. Overload at any of the two outputs will cause a

shut-down of both outputs. A red LED indicates the over-

load condition.

I_o

I_{o nom}

0

0.5

1.0

Fig. 9

_o1versus I_o1(typ.) of single output units

U

Edition 01/01.2001

8/26

Cassette Style

150 Watt AC-DC Converters

K Series

Output Voltage Regulation of Double Output Modules

with Output 1 and 2 in Symmetrical Configuration

[V] U_o2

26.0

Output 1 is under normal conditions regulated to U_{o1 nom}

independent of the output currents.

,

05107

I_o1= 3.0 A

I_o1= 2.0 A

I_o1= 1.0 A

I_o1= 0.5 A

I_o1= 0.3 A

U_o2is dependent upon the load distribution. When both out-

puts are loaded with more than 10% of I_{o nom}, the deviation

of U_o2remains within ±5% of the value of U_o1. The following

3 figures show the regulation with varying load distribution.

If I_o1= I_o2or the two outputs are connected in series, the de-

viation of U_o2remains within ±1% of the value of U_o1pro-

vided that a total load of more than 10% of I_{o nom}is applied.

25.5

25.0

24.5

24.0

23.5

23.0

Two outputs of a single K 2000 module connected in paral-

lel will behave like the output of a K 1000 module; the paral-

leled output is fully regulated. No precautions are neces-

sary in using the R-input and the test sockets.

[V] U_o2

05105

I_o2

[A]

12.6

0

0.5

1

1.5

2

2.5

3

3.5

4

I_o1= 6.0 A

I_{o nom}

I_o1= 4.5 A

I_o1= 3.0 A

12.4

Fig. 12

LK 2660: DU_o2(typ.) versus I_o2with different I_o1

I_o1= 1.5 A

I_o1= 0.6 A

12.2

12.0

11.8

11.6

11.4

11.2

I_o2

0

1

2

3

4

5

6

7

8

[A]

I_{o nom}

Fig. 10

LK 2320: DU_o2(typ.) vs. I_o2with different I_o1

[V] U_o2

05106

15.75

I_o1= 5.00 A

I_o1= 3.75 A

I_o1= 2.50 A

I_o1= 1.25 A

I_o1= 0.50 A

15.50

15.25

15.00

14.75

14.50

14.25

14.00

I_o2

0

1

2

3

4

5

6

7

[A]

I_{o nom}

Fig. 11

LK 2540: DU_o2(typ.) versus I_o2with different I_o1

Edition 01/01.2001

9/26

Cassette Style

150 Watt AC-DC Converters

K Series

Auxiliary Functions

i Inhibit for Remote On and Off

06001

U_o/U_{o nom}

1

Note: With open i input: Output is disabled (U_o= off).

The outputs of the module may be enabled or disabled by

means of a logic signal (TTL, CMOS, etc.) applied between

the inhibit input i and the negative pin of output 1 (Vo1–). In

systems with several units, this feature can be used, for ex-

ample, to control the activation sequence of the converters.

If the inhibit function is not required, connect the inhibit pin

18 to pin 14 to enable the outputs (active low logic, fail

safe). For output response refer to: Hold-up Time and Out-

put Response.

0.1

0

t

t_f

t_r

Inhibit

1

t

0

Fig. 15

06031

Output response as a function of inhibit control

Vo+

i

Vi+

I_inh

U_inh

Sense Lines

(Only for single output units 5.1 V, 12 V, 15 V, 24 V)

This feature enables for compensation of voltage drops

across the connector contacts and if necessary, across the

load lines. If the sense lines are connected at the load

rather than directly at the connector, the user should ensure

that U_{o max}(between Vo1+ and Vo1–) is not exceeded. We

recommend connecting the sense lines directly at the fe-

male connector.

Vo–

Vi–

Fig. 13

Definition of U_inhand I_inh

.

I_inh[mA]

U_inh= 2.4 V

U

_inh= 0.8 V

For further information, please refer to: Application Notes .

2.0

1.6

1.2

To ensure correct operation, both sense lines (S+ and S–)

should be connected to their respective power outputs

(Vo1+ and Vo1–) and the voltage difference between any

sense line and its respective power output pin (as meas-

ured on the connector) should not exceed the following val-

ues:

0.8

0.4

U_o= on

U_o= off

Table 6: Maximum Voltage compensation allowed using

sense lines

0

–0.4

–0.8

Output

voltage

Total voltage difference Voltage difference

between sense lines and

their respective outputs

between

U_inh[V]

–50

–30

–10

0

10

30

50

Vo– and S–

Fig. 14

5.1 V

<0.5 V

<1.0 V

<0.25 V

Typical inhibit current I_inhversus inhibit voltage U_inh

12 V, 15 V

Table 5: Inhibit characteristics

If the output voltages are increased above U_{o nom}via R-in-

put control, option P setting, remote sensing or option T, the

output currents must be reduced accordingly so that

P_{o nom}is not exceeded.

Characteristic

Conditions

min typ max Unit

U_inhInhibit U_o= on U_{i min}…U_{i max}–50

0.8

50

V

voltage

U_o= off

2.4

Important: The output terminals Vo1+ and Vo1– must

always be connected to the load before connecting the

sense lines S+ and S–, otherwise the unit will be dam-

aged.

I_inhInhibit current

U_inh= 0

–400 µA

t_r

t_f

Rise time

Fall time

30

depending on I_o

ms

Edition 01/01.2001

10/26

Cassette Style

150 Watt AC-DC Converters

K Series

Programmable Output Voltage (R-Function)

– If the output voltages are increased above U_{o nom}via R-

input control, option P setting, remote sensing or option

T, the output current(s) should be reduced accordingly so

that P_{o nom}is not exceeded.

As a standard feature, the modules offer an adjustable out-

put voltage, identiﬁed by letter R in the type designation.

The control input R (pin 16) accepts either a control voltage

U_extor a resistor R_extto adjust the desired output voltage.

When not connected, the control input automatically sets

– The R-input (as well as option P) is related to the main

output.

the output voltage to U_{o nom}

.

a) Adjustment by means of an external control voltage U_ext

between pin 16 (R) and pin 14:

– With double output units the second output follows the

value of the controlled main output. Resistor values as in-

dicated for the single output units should be used.

The control voltage range is 0...2.75 V DC and allows an

output voltage adjustment in the range of approximately

– For correct output voltage adjustment of double output

units the external wiring of the outputs should be accord-

ing to: R-Function for different output configuration de-

pending upon the desired output conﬁguration.

0...110% U_{o nom}

U

.

U_ext= –––^o––– • 2.5 V (approximate formula)

U_{o nom}

b) Adjustment by means of an external resistor:

– In case of parallel connection the output voltages should

Depending upon the value of the required output voltage

the resistor shall be connected

be individually set within a tolerance of 1...2%.

06003

Vo1+

R

N

either: Between pin 16 and pin 14 (U_o< U_{o nom}) to

achieve an output voltage adjustment range of approxi-

mately 0...100% U_{o nom}

+

16

14

Module

U_ext

S–

or: Between pin 16 and pin 12 (U_o> U_{o nom}) to achieve

an output voltage adjustment range of approximately

Vo1–

P

N

100...110% U_{o nom}

.

Vo1+

Warning:

S+

R

– U_extshall never exceed 2.75 V DC.

12

R'_ext

R_ext

– The value of R'_extshall never be less than the lowest

value as indicated in table R'_ext(for U_o> U_{o nom}) to

avoid damage to the unit!

16

14

S–

Vo1–

P

Remarks:

Fig. 16

Output voltage control for single output units LK 1000 by

means of the R input

– The R-Function excludes option P (output voltage adjust-

ment by potentiometer).

Table 7a: R_extfor U_o< U_{o nom}; approximative values (U_{i nom}, I_{o nom}, series E 96 resistors); R'_ext= ∞

U_{o nom}= 5.1 V

U_o(V) R_ext[kΩ]

U_{o nom}= 12 V

U_o[V] ¹

U_{o nom}= 15 V

U_o[V] ¹

U_{o nom}= 24 V

U_o[V] ¹

R_ext[kΩ]

0.806

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

0.432

0.976

1.65

2.61

3.83

5.76

8.66

14.7

30.1

200

2

3

4

5

6

7

8

9

10

11

4

6

8

10

12

14

16

18

20

22

0.806

1.33

2

2.87

4.02

5.62

8.06

12.1

20

2

4

6

8

9

10

11

12

13

14

4

8

0.619

1.47

2.67

4.53

6.04

8.06

11

16.2

26.1

56.2

4

6

8

10

12

14

16

18

20

22

8

12

16

20

24

28

32

36

40

44

1.33

2

2.87

4.02

5.62

8.06

12.1

20

44.2

12

16

18

20

22

24

26

28

42.2

Table 7b: R’_extfor U_o> U_{o nom}; approximative values (U_{i nom}, I_{o nom}, series E 96 resistors); R_ext= ∞

U_{o nom}= 5.1 V

U_o[V] R'_ext[kΩ]

5.15 432

U_{o nom}= 12 V

U_o[V] ¹

U_{o nom}= 15 V

U_o[V] ¹

U_{o nom}= 24 V

R'_ext[kΩ]

U_o[V] ¹

R'_ext[kΩ]

12.1

12.2

12.3

12.4

12.5

12.6

12.7

12.8

13.0

13.2

24.2

24.4

24.6

24.8

25.0

25.2

25.4

25.6

26.0

26.4

1820

931

619

475

383

316

274

243

196

169

15.2

15.4

15.6

15.8

16.0

16.2

16.4

16.5

30.4

30.8

31.2

31.6

32.0

32.4

32.8

33.0

1500

768

523

392

316

267

232

221

24.25

24.5

24.75

25.0

25.25

25.5

25.75

26.0

48.5

49.0

49.5

50.0

50.5

51.0

51.5

52.0

52.5

52.8

3320

1690

1130

845

698

590

511

442

402

383

5.2

5.25

5.3

215

147

110

5.35

5.4

88.7

75

5.45

5.5

64.9

57.6

26.25

26.4

¹First column: single output units or double output units with separated outputs, second column: outputs in series connection

Edition 01/01.2001

11/26

Cassette Style

150 Watt AC-DC Converters

K Series

R-Function for different output configurations

06004

06005

+

Vo2+

+

4

Vo2+

Vo2–

Vo1+

Vo1–

4

6

Vo2+

Vo2–

Vo1+

Vo1–

6

8

12 V

15 V

24 V

1

U_o1

24 V

30 V

48 V

8

1

U_o1

10

12

14

–

10

12

2

–

14

16

R_extR'_ext

16

R

Fig. 17a

Fig. 17b

LK 2000 with H15 connector. R-input for output voltage

control. Wiring for output voltage 24 V or 30 V or 48 V with

main and second output connected in series.

LK 2000 with H15 connector. R-input for output voltage

control. Wiring for output voltage 12 V or 15 V or 24 V

with main and second output connected in parallel.

06006

06007

+24/+30/+48 V

0 V

Vo2+

Vo2–

Vo1+

Vo1–

4

6

Vo2+

Vo2–

Vo1+

Vo1–

+

4

6

1

U_o2

–12/–15/–24 V

8

–

8

U_o2

+12/+15/+24 V

0 V

U_o1

10

12

+

10

12

2

1

U_o1

+12/+15/+24 V

+

14

16

14

16

R_extR'_ext

R

Fig. 17c

Fig. 17d

LK 2000 with H15 connector. R-input for output voltage

control. Wiring of main and second output for two output

voltages U_o1and U_o2: +12 V and +24 V or +15 V and

+30 V or +24 V and +48 V.

LK 2000 with H15 connector. R-input for output voltage

control. Wiring of main and second output for two sym-

metrical output voltages U_o1and U_o2: ±12 V or ±15 V or

±24 V.

¹A ceramic multilayer capacitor connected across the load re-

duces ripple and spikes.

06008

+

Vo2+

Vo2–

Vo1+

Vo1–

4

6

²Shortest possible wiring for series connection at the female con-

nector

12 V

15 V

24 V

1

U_o2

–

8

+

10

12

12 V

15 V

24 V

U_o1

–

Remarks:

14

16

R_extR'_ext

Double output units ﬁtted with H-15 connectors have the

output pins of the second output, pins 4/6 and 8/10, inter-

nally paralleled.

R

It is recommended that pins 4/6 and 8/10 be directly paral-

leled at the female connector as well to reduce the voltage

drop across the connector.

Fig. 17e

LK 2000 with H15 connector. R-input for output voltage

control. Wiring of main and second output for two output

voltages U_o1and U_o2: 12 V/12 V or 15 V/15 V or

24 V/24 V, the outputs are galvanically isolated.

Please note: U_o2varies depending upon its own load and

the load on output 1.

Edition 01/01.2001

12/26

Cassette Style

150 Watt AC-DC Converters

K Series

Display Status of LEDs

06002

U_o1> 0.95...0.98U_{o1 adj}

Fig. 18

OK

i

I_{o L}

LEDs "OK", "i" and "I_{o L}" status versus input voltage

Conditions: I_o£ I_{o nom}, T_C£ T_{C max}, U_inh£ 0.8 V

U_{i uv}= undervoltage lock-out, U_{i ov}= overvoltage lock-out

U_i

U_{i uv}U_{i min}

U_{i max}U_{i ov}U_{i abs}

U_o1> 0.95...0.98U_{o1 adj}

U_o1< 0.95...0.98U_{o1 adj}

OK

I_{o L}

LEDs "OK" and "I_{o L}" status versus output current

Conditions: U_{i min}...U_{i max}, T_C£ T_{C max}, U_inh£ 0.8 V

I_o

I_{o nom}

I_oL

i

LED "i" versus case temperature

Conditions: U_{i min}...U_{i max}, I_o£ I_{o nom}, U_inh£ 0.8 V

T_C

T_{C max}

U_{inh threshold}

T_{PTC threshold}

LED "i" versus U_inh

Conditions: U_{i min}...U_{i max}, I_o£ I_{o nom}, T_C£ T_{C max}

U_{i inh}

+0.8 V

+2.4 V

+50 V

-50 V

LED off

LED Status undefined

LED on

Test Sockets (Main output only )

Test sockets for measuring the output voltage U_o1are lo-

cated at the front of the module. The positive test socket is

protected by a series resistor (see: Functional Description,

block diagrams). The voltage measured at the test sockets

is approximately 30 mV lower than the value measured at

the output terminals.

In case of double output units externally connected in se-

ries for U_o= 24 V, 30 V or 48 V the monitored output volt-

age is 12 V, 15 V or 24 V respectively.

Electromagnetic Compatibility (EMC)

Electromagnetic Emission

factor y

(I_{rms bat}/I_load

)

[dBµV/m]

07077

06037

50

0.6

A

40

B

0.4

0.2

30

20

10

0

1.0

10

300

100

R_sys[mΩ]

[MHz]

Number of LT units:

0

1

2

5

6

3

4

Fig. 19

Fig. 20

Typical disturbance voltage (quasi-peak) at the input ac-

cording to CISPR 11/22 and EN 55011/22, measured at

U_{i nom}and I_{o nom.}

Typical radiated electromagnetic field strength (quasi-

peak) according to CISPR 11/22 and EN 55011/22, nor-

malized to a distance of 10 m, measured at U_{i nom}and

I_{o nom}

.

Edition 01/01.2001

13/26

Cassette Style

150 Watt AC-DC Converters

K Series

A suppressor diode or a metal oxide VDR (depending upon

the type) together with an input fuse and an input filter form

an effective protection against high input transient voltages

which typically occur in most installations, but especially in

battery driven mobile applications. The S-series has been

successfully tested to the following specifications:

Electromagnetic Immunity

Table 8: Immunity type tests

Phenomenon

Standard ¹

Level

Coupling

mode ²

Value

applied

Waveform

Source

imped.

Test

procedure

In

Per-

oper. form. ³

Voltage surge

IEC 60571-1

i/c, +i/–i

800 V_p

1500 V_p

3000 V_p

4000 V_p

7000 V_p

1.5 • U_batt

100 µs

50 µs

5 µs

100 Ω

1 pos. and 1 neg.

voltage surge per

coupling mode

yes

A

1 µs

100 ns

1 s

Supply related

surge

RIA 12

B

+i/–i

0.2 Ω

5 Ω

1 positive

surge

yes

A

B

Direct transient

C

D

E

F

G

H

J

+i/c, –i/c

960 V_p

1800 V_p

3600 V_p

4800 V_p

8400 V_p

1800 V_p

3600 V_p

4800 V_p

8400 V_p

10/100 µs

5/50 µs

5 pos. and 5 neg.

impulses

0.5/5 µs

0.1/1 µs

0.05/0.1 µs

5/50 µs

100 Ω

Indirect coupled

transient

+o/c, -o/c

0.5/5 µs

0.1/1 µs

0.05/0.1 µs

1/50 ns

K

L

Electrostatic

discharge

(to case)

IEC/EN

61000-4-2

4

contact discharge 8000 V_p

330 Ω

10 positive and

10 negative

discharges

yes

A

air discharge

15000 V_p

Electromagnetic IEC/EN

3

4

antenna

20 V/m

AM 80%

1 kHz

n.a.

80…1000 MHz

yes

A

field

61000-4-3

Electromagnetic ENV 50204

field,

pulse modulated

50% duty cycle,

900 ±5 MHz

10 V/m 200 Hz repetition

frequency

Electrical fast

transient/burst

IEC/EN

61000-4-4

capacitive, o/c

2000 V_pbursts of 5/50 ns 50 Ω

1 min positive

1 min negative

transients per

coupling mode

yes

A

2.5/5 kHz over

15 ms; burst

period: 300 ms

i/o, +i/–i

direct

4000 V_p

Surge

IEC/EN

61000-4-5

3

4

i/c

2000 V_p

1.2/50 µs

12 Ω

2 Ω

5 pos. and 5 neg.

surges per

coupling mode

yes

A

+i/–i

Conducted

disturbances

IEC/EN

61000-4-6

3

i, o, signal wires

10 V_rms

(140 dBµV)

AM 80%

1 kHz

150 Ω

0.15...80 MHz

¹Related and previous standards are referenced in Technical Information: Standards.

²i = input, o = output, c = case.

³A = Normal operation, no deviation from specifications, B = Normal operation, temporary deviation from specs possible.

⁴Test in progress, please consult factory.

Note: Previous standards are referenced in: Technical In-

formation: Standards

Edition 01/01.2001

14/26

Cassette Style

150 Watt AC-DC Converters

K Series

Immunity to Environmental Conditions

Table 9: Mechanical stress

Test method

Standard

Test conditions

Status

Ca

Ea

Eb

Fc

Damp heat

steady state

IEC/DIN IEC 60068-2-3

MIL-STD-810D section 507.2 Relative humidity:

Duration:

Temperature:

40 ^±2°C

%

56 days

Unit not

operating

93 ^+2/-3

Shock

(half-sinusoidal)

IEC/EN/DIN EN 60068-2-27

MIL-STD-810D section 516.3 Bump duration:

Number of bumps:

Acceleration amplitude:

100 g_n= 981 m/s²

6 ms

18 (3 each direction)

Unit

operating

Bump

(half-sinusoidal)

IEC/EN/DIN EN 60068-2-29

MIL-STD-810D section 516.3 Bump duration:

Number of bumps:

Acceleration amplitude:

40 g_n= 392 m/s²

6 ms

6000 (1000 each direction)

Unit

operating

Vibration

(sinusoidal)

IEC/EN/DIN EN 60068-2-6

Acceleration amplitude:

0.35 mm (10...60 Hz)

5 g_n= 49 m/s²(60...2000 Hz) operating

10...2000 Hz

Unit

Frequency (1 Oct/min):

Test duration:

7.5 h (2.5 h each axis)

Fn

Kb

Vibration

broad-band

random

IEC 60068-2-64

DIN 40046 part 23

MIL-STD-810 section 514.3

Acceleration spectral density: 0.05 g_n²/Hz

Unit

operating

Frequency band:

Acceleration magnitude:

Test duration:

5...500 Hz

4.97 g_{n rms}

3 h (1 h each axis)

(digital control)

Salt mist, cyclic

(sodium chloride

NaCl solution)

IEC/EN/DIN IEC 60068-2-52

Concentration:

Duration:

Storage:

Storage duration:

Number of cycles:

5% (30°C)

Unit not

operating

2 h per cycle

40°C, 93% rel. humidity

22 h per cycle

3

Table 10: Temperature speciﬁcations, values given are for an air pressure of 800...1200 hPa (800...1200 mbar)

Temperature

Standard -7

Option -9

Characteristics

Conditions

min

–25

–40

max

71

min

–40

–55

max

71

Unit

T_AAmbient temperature

T_CCase temperature

T_SStorage temperature

U_{i min}...U_{i max}

I_o= 0...I_{o nom}

°C

95

Not operational

100

Table 11: MTBF

Values at Speciﬁed

Type

Ground Benign

Ground Fixed

Ground Mobile

Unit

Case Temperature

40°C

150'000

500'000

70°C

50°C

MTBF ¹

LK 1000

LK 2000

500'000

80'000

50'000

h

Device hours ²

¹Calcualted in accordance with MIL-HDBK217F.

²Statistical values, based on an average of 4300 working hours per year and in general field use, over 3 years.

Edition 01/01.2001

15/26

Cassette Style

150 Watt AC-DC Converters

K Series

7 TE

9 TE

3.27

Mechanical Data

Dimensions in mm. Tolerances ±0.3 mm unless otherwise indicated.

159

4.5

Test jacks (+/–)

Option P (U_o

Option D (U_to

)

Option D (U_ti

)

LED i (red)

LED OK (green)

LED I_oL(red)

Measuring point of

case temperature T_C

= Ø 3.5

= Ø 4.1

50

42

171.93 (DIN 41494)

Main face

80

d

Front plate

Back plate

Note:

168.5 ^±0.5

– d ≥15 mm, recommended minimum distance

to next part to ensure proper air circulation at

full output power.

– free air locations: the module should be

mounted with ﬁns in vertical position to

achieve a maximum air ﬂow through the heat

sink.

European

Projection

Fig. 21

Aluminium case K02 with heatsink, black finish and self

cooling, weight: Approx. 1.55 kg

7 TE

3.27

4 TE

50

5

158

M 4

Measuring point of

case temperature T_C

5

47.2

17.3

133.4

168 ^±0.5

171.93 (DIN 41494)

Note: Long case with S-type heatsink or

B2 cooling plate, elongated by 60 mm

for 220 mm rack depth, is available on

request. (No LED's, no test jacks)

Fig. 22

Aluminium case K02 with option B1 (cooling plate), black

finish and self cooling. Total weight: Approx. 1.15 kg

Edition 01/01.2001

16/26

Cassette Style

150 Watt AC-DC Converters

K Series

Safety and Installation Instructions

Connector Pin Allocation

The connector pin allocation table defines the electrical

potentials and the physical pin positions on the H15, H15

S4 connector. Pin no. 24, the protective earth pin present

on all LK AC-DC converters is leading, ensuring that it

makes contact with the female connector first.

10010

Fixtures for connector

retention clips V

Fixtures for connector

retention clips V

(see Accessory Products)

30/32

4/6

32

4

Type H15 S4

Type H15

Fig. 23

Fig. 24

View of module’s male H15 S4 connector

View of module’s male H15 connector

Table 12: H15 Connector pin allocation

No.

Connector type H15 S4

LK 1001

Connector type H 15

LK 1301/1501/1601

Output 1

LK 2000

Output 2

Output 1

Control of U_o1

Inhibit

4

Vo1+

Vo1–

S+

Vo2+

Vo2–

Vo1+

Vo1–

R ¹

Vo1+

Output 1

6

Output 1

8

Output 1

Vo1–

10

12

14

16

18

20

Output 1

S+

S–

R ¹

i

Sense

S–

Sense

Control of U_o1

Inhibit

R ¹

Control of U_o1

Inhibit

i

D ³

V ³

T

Save data

ACFAIL

D

Save data

D

Save Data

22

Current sharing

T

Current sharing

T

Current sharing

24 ²

26

Protective earth

Neutral

Protective earth

Neutral

Protective earth

Neutral

N

P

N

P

N

P

28

30

32

Neutral

Phase

Neutral

Phase

¹Feature R excludes option P and, vice versa

²Leading pin (pregrounding)

³Option D excludes option V and vice versa.

Standards and Approvals

All AC-DC converters correspond to class I equipment.

They are UL recognized according to UL 1950, UL recog-

nized for Canada to CAN/CSA C22.2 No. 950-95 and LGA

approved to IEC/EN 60950 standards.

The units have been evaluated for:

• Building in

• Basic insulation between input and case, based on 250 V

AC and 400 V DC

• Double or reinforced insulation between input and output,

based on 250 V AC and 400 V DC

• Basic insulation between output and case based on

200 V AC and DC

• Operational insulation between output and output

• The use in a pollution degree 2 environment

• Connecting the input to a primary or secondary circuit

which is subject to a maximum transient rating of 2500 V

(overvoltage category III based on a 110 V primary cir-

cuit, overvoltage category II based on a 230 V primary

circuit).

The AC-DC converters are subject to manufacturing sur-

veillance in accordance with the above mentioned UL,

CSA, EN and with ISO 9001 standards.

Edition 01/01.2001

17/26

Cassette Style

150 Watt AC-DC Converters

K Series

Installation Instructions

approx. 8 A. The connector contacts are rated 8 A over the

whole temperature range.

The K series AC-DC converters are components, intended

exclusively for inclusion within other equipment by an in-

dustrial assembly operation or by professional installers. In-

stallation must strictly follow the national safety regulations

in compliance with the enclosure, mounting, creepage,

clearance, casualty, markings and segregation require-

ments of the end-use application.

Make sure that there is sufficient air flow available for con-

vection cooling. This should be verified by measuring the

case temperature when the unit is installed and operated in

the end-use application. The maximum specified case tem-

perature T_{C max}shall not be exceeded. See also: Thermal

Considerations.

Connection to the system shall be made via the female con-

nector H15/H15 S4 (see: Accessories). Other installation

methods may not meet the safety requirements.

If the end-product is to be UL certified, the temperature of

the main isolation transformer should be evaluated as part

of the end-product investigation.

The AC-DC converters are provided with pin no. 24 ( ),

which is reliably connected with their case. For safety rea-

sons it is essential to connect this pin with the protective

earth of the supply system.

Check for hazardous voltages before altering any connec-

tions.

Ensure that a unit failure (e.g. by an internal short-circuit)

does not result in a hazardous condition. See also: Safety

of operator accessible output circuit.

An input fuse is built-in in the connection from pins no. 30

and 32 (P ) of the unit. Since this fuse is designed to pro-

tect the unit in case of an overcurrent and does not neces-

sarily cover all customer needs, an external fuse suitable

for the application and in compliance with the local require-

ments might be necessary in the wiring to one or both input

potentials, pins nos. 26 and 28 and/or nos. 30 and 32.

Isolation

The electric strength test is performed as factory test in ac-

cordance with IEC/EN 60950 and UL 1950 and should not

be repeated in the field. Power-One will not honour any

guarantee claims resulting from electric strength field tests.

Important: Whenever the inhibit function is not in use, pin

no. 18 (i) should be connected to pin no. 14 (S–/Vo1–) to

enable the output(s).

Important: Testing by applying AC voltages will result in

high and dangerous leakage currents flowing through

the Y-capacitors (see fig.: Block diagram).

Do not open the modules, or guarantee will be invalidated.

Due to high current values, all LK units provide two inter-

nally parallel connected contacts for certain paths (pins 4/6,

8/10, 26/28 and 30/32, respectively). It is recommended to

connect load and supply to both female connector pins of

each path in order to keep the voltage drop across the con-

nector pins to an absolute minimum and to not overstress

the connector contacts if currents are higher than

Protection Degree

Condition: Female connector fitted to the unit.

IP 30: All units except those with option P, and except

those with option D or V with potentiometer.

IP 20: All units fitted with option P, or with option D or V with

potentiometer.

Table 13: Isolation

Characteristic

Input to

case

Input to Output to Output to

Unit

output

case

output

Electric

strength

test voltage

Required according to

IEC/EN 60950

1.5

2.1

2.8

2.0

3.0 ¹

–

kV_rms

4.2 ¹

–

kV DC

Actual factory test 1 s

5.6 ¹

1.4

1.0

0.14

0.1

AC test voltage equivalent

to actual factory test

4.0 ¹

kV_rms

Insulation resistance at 500 V DC

>300

>100 ²

MΩ

¹In accordance with IEC/EN 60950 only subassemblies are tested in factory with this voltage.

²Tested at 100 V DC.

For creepage distances and clearances refer to: Technical Information: Safety.

Cleaning Agents

In order to avoid possible damage, any penetration of

cleaning fluids is to be prevented, since the power supplies

are not hermetically sealed.

Edition 01/01.2001

18/26

Cassette Style

150 Watt AC-DC Converters

K Series

Leakage Currents in AC-DC operation

Leakage currents flow due to internal leakage capacitance

and RFI suppression Y-capacitors. The current values are

proportional to the mains voltage and nearly proportional to

the mains frequency and are specified at an input voltage of

264 V (50 Hz) where phase, neutral and protective earth

are correctly connected as required for class I equipment.

Under test conditions the leakage current flows through a

measuring instrument (MI) as described in fig.: Measuring

instrument for earth leakage current tests, which takes into

account impedance and sensitivity of a person touching

unearthed accessible parts. The current value is calculated

by dividing the measured voltage by 500 Ω. If inputs and/or

outputs of K-units are connected in parallel, their individual

leakage currents are added.

1500 Ω

MI

500 Ω

10064

P

Vo+

P

N

Vo–

10 kΩ

220 nF

MI for

earth

leakage

current

22 nF

V

Fig. 26

Test set-up

Fig. 25

Measuring instrument (MI) for earth leaking current tests

according to IEC/EN 60950.

Table 14: Leakage currents

Characteristic

Class I

Unit

LK 1000, LK 2000

Maximum earth

leakage current

Permissible according to IEC/EN 60950

Specified value at 264 V, 50 Hz

3.5

mA

1.43

Safety of operator accessible output circuit

If the output circuit of an AC-DC converter is operator ac-

cessible, it shall be an SELV circuit according to the IEC/EN

60950 related safety standards.

However, it is the sole responsibility of the installer to as-

sure the compliance with the relevant and applicable safety

regulations. More information is given in Technical Informa-

tion: Safety.

The following table shows a possible installation configura-

tion, compliance with which causes the output circuit of an

K series AC-DC converter to be an SELV circuit according

to IEC/EN 60950 up to a configured output voltage (sum of

nominal voltages if in series or +/– configuration) of 36 V.

If the K series AC-DC converters are used as DC-DC con-

verters, please refer to the data sheet DC-DC converters

>100 W: K series.

Table 15: Safety concept leading to an SELV output circuit

Conditions

AC-DC converter

Installation

Result

Nominal voltage

Grade of insulation

between input and output

provided by the AC-DC converter

Measures to achieve the resulting

safety status of the output circuit

Safety status of the AC-DC

converter output circuit

Mains

Double or reinforced

Earthed case ¹and installation

SELV circuit

≤250 V AC

according to the applicable standards

¹The earth connection has to be provided by the installer according to the relevant safety standards, e.g. IEC/EN 60950.

10021

Fuse

+

~

Mains

AC-DC

con-

verter

SELV

Fuse

–

~

Earth connection

Fig. 27

Schematic safety concept. Use fuses and earth connec-

tion as per: Installation Instructions and table: Safety con-

cept leading to an SELV output circuit.

Edition 01/01.2001

19/26

Cassette Style

150 Watt AC-DC Converters

K Series

Description of Options

Table 16: Survey of options

Option

–9

Function of option

Characteristic

Extended operational ambient temperature range

Electronic inrush current limitation circuitry

Potentiometer for fine adjustment of output voltage

Input and/or output undervoltage monitoring circuitry

Current sharing

T_A= –40...71°C

E

Active inrush current limitation

P ¹

Adjustment range +10/-60% of U_{o nom}, excludes R input

Safe data signal output (D0...DD)

D ²

V ^{2 3}

T

ACFAIL signal according to VME specifications (V0, V2, V3)

Interconnect T-pins if paralleling outputs (5 units max.)

Replaces standard heat sink, allowing direct chassis-mounting

B1/B2

Cooling plate

¹Function R excludes option P and vice versa

²Option D excludes option V and vice versa

³Only available if main output voltage U_o1= 5.1 V

-9 Extended Temperature Range

10065

I_i[A]

Option -9 extends the operational ambient temperature

range from –25...71°C (standard to –40...71°C. The power

supplies provide full nominal output power with convection

cooling. Option -9 excludes inrush current limitation by

NTC.

LK type

U_i= 230 V AC

P_oP_{o nom}

20

15

10

5

=

Capacitor C_i

fully charged

P Potentiometer

Normal operation

(FET fully conducting)

The potentiometer provides an output voltage adjustment

range of +10/–60% of U_{o nom}and is accessible through a

hole in the front cover. This feature enables compensation

of voltage drops across the connector and wiring. Option P

is not recommended if units are connected in parallel.

0

–5

Option P excludes the R-function. With double output units

both outputs are affected by the potentiometer setting (dou-

bling the voltage setting if the outputs are in series).

–10

t

[ms]

–15

If the output voltages are increased above U_{o nom}via R-in-

put control, option P setting, remote sensing or option T, the

output current(s) should be reduced accordingly so that

P_{o nom}is not exceeded.

0

20

t_inr40

60

80

Fig. 29

Inrush current with option E

E Inrush Current Limitation

Precaution:

The converters may be supplemented by an electronic cir-

cuit (option E, replacing the standard built-in NTC) to

achieve an enhanced inrush current limiting function.

Subsequent switch-on cycles at start-up are limited to

max. 10 cycles during the ﬁrst 20 seconds (cold unit) and

at continuing on/off (T_C= 95°C) max. 1 cycle every

8 sec.

Table 17: Inrush current characteristics with option E

Characteristics

LK

Unit

U_i= 230 V AC

typ

–

max

21.7

50

I_{inr p}

t_inr

Peak inrush current

Inrush current duration

A

35

ms

Control

FET

Rectifier

R_S

C_i

R_I

Fig. 28

Option E block diagram

Edition 01/01.2001

20/26

Cassette Style

150 Watt AC-DC Converters

K Series

T Current Sharing

This option ensures that the output currents are approxi-

mately shared between all paralleled modules and in-

creases system reliability. To use this facility, simply inter-

connect the T pins of all modules and make sure, that

pins 14, the S– pin (LK 1000) or the Vo1– pins (LK 2000)

are also connected together. The load leads should have

equal length and cross section to ensure equal voltage

drops. Not more than 5 units should be connected in paral-

lel. If output voltage adjustment is requested we strongly

recommend to use the R-input instead of option P, as with

option P the required setting accuracy is difﬁcult to achieve.

The output voltages must be individually set prior to paral-

leling to within a tolerance of 1...2% or the R pins should be

connected together.

11003

Vo+

Load

Vo–

Vo+

Vo–

Vo+

Vo–

2

1

Vo+

11004

N

Fig. 31

S+

T

An example of poor wiring for connection in parallel

1

Power bus

3

+

–

S–

Vo2+

Vo–

P

N

Vo2–

Load

T

11037

Module

2

Vo+

Vo1+

S+

T

Vo1–

1

3

S–

Load

1

Vo–

P

Vo2+

max. 5 units connected in parallel

Vo2–

¹Leads should have equal length and cross sections and should

run in the same cable loom.

T

Module

Vo1+

²Diodes recommended in redundant operation only

³DC common point

Vo1–

Fig. 30

max. 5 units in parallel connection

Fig. 32

Paralleling of single output units using option T with the

sense lines connected at the load

Paralleling of double output units using option T with

Power bus.

D Undervoltage Monitor

The input and/or output undervoltage monitoring circuit op-

erates independently of the built-in input undervoltage lock-

out circuit. A logic "low" (JFET output) or "high" signal (NPN

output) is generated at pin 20 as soon as one of the moni-

tored voltages drops below the preselected threshold level

U_t. The return for this signal is Vo1–. The D output recovers

when the monitored voltage(s) exceed(s) U_t+ U_h. The

threshold level U_tiis adjusted in the factory. The threshold

level U_tois either adjusted by a potentiometer, accessible

through a hole in the front cover, or factory adjusted to a

ﬁxed value speciﬁed by the customer.

Option D exists in various versions D0...DD as shown in the

following table.

Table 18: Undervoltage monitor functions

Output type

Monitoring

Minimum adjustment range

of threshold level U_t

U_tiU_to

Typical hysteresis U_h[% of U_t]

for U_{t min}...U_{t max}

JFET

NPN

U_i

U_o1

U_hi

U_ho

2.5...0.6

-

D1

D2

D3

D4

D0

D5

D6

D7

D8

D9

no

yes

no

yes

no

-

3.5...40 V ¹

-

1

U_{i min}...U_{i max}

-

3.4...0.4

-

2

yes

no

(0.95...0.985 U_o1

3.5...40 V ³

-

)

"0"

no

-

2.5...0.6

-

3 4

1

yes

U_{i min}...U_{i max}

3.4...0.4

yes

3.5...40 V ³

(0.95...0.985 U_o1

3.5...40 V ¹

2.5...0.6

"0"

2

)

-

DD

2.5...0.6

¹Threshold level adjustable by potentiometer

²Fixed value. Tracking if U₀₁is adjusted via R-input, option P or sense lines.

³The threshold level permanently adjusted according to customer specification ±2% at 25°C. Any value within the specified range is

basically possible but causes a special type designation in addition to the standard option designations (D0/D9 respectively)!

⁴Adjusted at I_{o nom}

Edition 01/01.2001

21/26

Cassette Style

150 Watt AC-DC Converters

K Series

11006

JFET output (D0…D4):

Vo1+

Connector pin D is internally connected via the drain-

source path of a JFET (self-conducting type) to the negative

potential of output 1. U_D≤ 0.4 V (logic low) corresponds to a

monitored voltage level (U_iand/or U_o1) <U_t. The current I_D

through the JFET should not exceed 2.5 mA. The JFET is

protected by a 0.5 W Zener diode of 8.2 V against external

overvoltages.

R

p

I

D

U

D

U_i, U_o1status

U_ior U_o1< U_t

D output, U_D

Vo1–

low, L, U_D≤ 0.4 V at I_D= 2.5 mA

high, H, I_D≤ 25 µA at U_D= 5.25 V

Fig. 33

U_iand U_o1> U_t+ U_h

Option D0...D4: JFET output, I_D≤ 2.5 mA

11007

Vo1+

NPN output (D5...DD):

Connector pin D is internally connected via the collector-

emitter path of a NPN transistor to the negative potential of

output 1. U_D< 0.4 V (logic low) corresponds to a monitored

voltage level (U_iand/or U_o1) > U_t+ U_h. The current I_D

through the open collector should not exceed 20 mA. The

NPN output is not protected against external overvoltages.

U_Dshould not exceed 40 V.

R

p

I

D

U

D

U_i, U_o1status

U_ior U_o1< U_t

D output, U_D

Vo1–

high, H, I_D≤ 25 µA at U_D= 40 V

low, L, U_D≤ 0.4 V at I_D= 20 mA

Fig. 34

Option D5...DD: NPN output, U_o1≤ 40 V, I_D≤ 20 mA

U_iand U_o1> U_t+ U_h

Table 19: D-output logic signals

Version of D

U_i< U_tresp. U_o< U_t

U_i> U_t+ U_hresp. U_o> U_t

Configuration

JFET

D1, D2, D3, D4, D0

D5, D6, D7, D8, D9, DD

low

high

low

high

NPN

11021

Threshold tolerances and hysteresis:

U_D

DU_ti

U_hi

If U_iis monitored, the internal input voltage after the input

filter and rectifier is measured. Consequently this voltage

differs from the voltage at the connector pins by the voltage

drop ∆U_tiacross input filter and rectifier. The threshold lev-

els of the D0 and D9 options are factory adjusted at nomi-

nal output current I_{o nom}and at T_A= 25°C. The value of ∆U_ti

depends upon the threshold level U_t, temperature and input

current. The input current is a function of the input voltage

and the output power.

U_{D high}

P

U_{D low}

U_i

U_ti

Fig. 35

Definition of U_ti, DU_tiand DU_hi(JFET output)

Edition 01/01.2001

22/26

Cassette Style

150 Watt AC-DC Converters

K Series

D-signal with respect to input and output voltage versus time:

Input voltage monitoring

NPN

U_D

11008

U_{D high}

3

U_{D low}

0

t

I_D

I_{D high}

I_{D low}

0

t

JFET U_D

U_{D high}

U_{D low}

0

t

1

4

t_h

t_{low min}

t_{high min}

U_o1

U_{o1 nom}

1

t_h

1

0.95

t

0

U

_i[V DC]

U_ti

+

U_hi

U_ti

0

Input voltage failure

Switch-on cycle

Input voltage sag

Switch-on cycle and subsequent

input voltage failure

Output voltage monitoring

NPN U_D

2

U_{D high}

3

U_{D low}

0

t

I_D

I_{D high}

I_{D low}

0

U_D

JFET

U_{D high}

U_{D low}

0

t

4

t_{low min}

¹Hold-up time see section Electrical Input Data.

²With output voltage monitoring, hold-up time t_h= 0.

³The signal will remain high if the D output is connected to

an external source.

U_o1

U_{o1 nom}

U_to

+

U_ho

U_to

⁴t_{low min}= 100...170 ms, typically 130 ms.

0

Output voltage failure

Fig. 36

Relationship between U_i, U_o1, U_D, U_o1/U_{o nom}versus time

Edition 01/01.2001

23/26

Cassette Style

150 Watt AC-DC Converters

K Series

V ACFAIL signal (VME)

Formula for threshold level for desired value of t_h:

Available for units with U_o1= 5.1 V

This option defines an undervoltage monitoring circuit for

the input or input and main output voltage equivalent to op-

tion D and generates an ACFAIL signal (V signal) which

conforms to the VME standard.

2 • P_o• (t_h+ 0.3 ms) • 100

U_ti= ––––––––––––––––––––– + U_{i min}

C_{i min}• h

2

where as:

The low state level of the ACFAIL signal is specified at a

sink current of I_V≤ 48 mA to U_V≤ 0.6 V (open-collector out-

put of a NPN transistor). The pull-up resistor feeding the

open-collector output should be placed on the VME back

plane.

C_{i min}= internal input capacitance [mF]

P_o

h

= output power [W]

= efficiency [%]

= hold-up time [ms]

t_h

U_{i min}= minimum input voltage [V] ¹

U_ti

= threshold level [V]

After the ACFAIL signal has gone low, the VME standard

requires a hold-up time t_hof at least 4 ms before the 5.1 V

output drops to 4.875 V when the output is fully loaded. This

hold-up time t_his provided by the internal input capacitance.

Consequently the working input voltage and the threshold

level U_tishould be adequately above the minimum input

voltage U_{i min}of the converter so that enough energy is re-

maining in the input capacitance.

¹Min. input voltage according to Electrical Input Data. For output

voltages U_o> U_{o nom}, the minimum input voltage increases pro-

portionally to U_o/U_o

.

nom

Remarks:

Option V2 and V3 can be adjusted by potentiometer to a

threshold level between U_{i min}and U_{i max}

.

Option V operates independently of the built-in input under-

voltage lock-out circuit. A logic "low" signal is generated at

pin 20 as soon as one of the monitored voltages drops be-

low the preselected threshold level U_t. The return for this

signal is Vo1–. The V output recovers when the monitored

voltage(s) exceed(s) U_t+ U_h. The threshold level U_tis either

adjustable by potentiometer, accessible through a hole in

the front cover, or is adjusted during manufacture to a de-

termined customer specified value.

Table 20: Available internal input capacitance and factory

potentiometer setting of U_{t i}with resulting hold-up time

Types

C_{i min}

U_ti

LK

0.21

120

4.2

Unit

mF

V DC

ms

t_h

Versions V0, V2 and V3 are available as shown below.

Table 21: Undervoltage monitor functions

V output

(VME compatible)

Monitoring

Minimum adjustment range

of threshold level

Typical hysteresis U_h[% of U_t]

U_i

U_o1

for U_{t min}…U_{t max}

U_ti

U_to

U_hi

U_ho

–

1

–

V2

V3

V0

yes

no

yes

no

U_{i min}...U_{i max}

3.4...0.4

2

0.95...0.985 U_o1

–

"0"

–

3 4

U_{i min}...U_{i max}

3 4

yes

0.95...0.985 U_o1

"0"

¹Threshold level adjustable by potentiometer.

²Fixed value between 95% and 98.5% of U_o1(tracking).

³Adjusted at I_{o nom.}

⁴Fixed value, resistor-adjusted (±2% at 25°C) acc. to customer's specifications; individual type number is determined by Power-One.

11009

V output (V0, V2, V3):

Vo1+

Connector pin V is internally connected to the open collec-

tor of a NPN transistor. The emitter is connected to the

R

p

negative potential of output 1. U_V≤ 0.6 V (logic low) corre-

sponds to a monitored voltage level (U_iand/or U_o1) <U_t.

The current I_Vthrough the open collector should not exceed

50 mA. The NPN output is not protected against external

overvoltages. U_Vshould not exceed 60 V.

I

V

U

V

U_i, U_o1status

V output, U_V

Vo1–

U_ior U_o1< U_t

low, L, U_V≤ 0.6 V at I_V= 50 mA

high, H, I_V≤ 25 µA at U_V= 5.1 V

Fig. 37

Output configuration of options V0, V2 and V3

U_iand U_o1> U_t+ U_h

Edition 01/01.2001

24/26

Cassette Style

150 Watt AC-DC Converters

K Series

11023

U_V

DU_ti

U_hi

Threshold tolerances and hysteresis:

If U_iis monitored, the internal input voltage is measured af-

ter the input filter and rectifier. Consequently this voltage

differs from the voltage at the connector pins by the voltage

drop DU_tiacross input filter and rectifier. The threshold level

of option V0 is adjusted during manufacture at I_{o nom}and T_A

= 25°C. The value of DU_tidepends upon the threshold level

U_t, temperature and input current. The input current is a

function of input voltage and output power.

U_{V high}

P

U_{V low}

U_i

U_ti

Fig. 38

Definition of U_ti, DU_tiand U_hi

Input voltage monitoring

2

t_{low min}

V2

U_{V high}

U_V

3

11010

4

2

4

U_{V low}

0

t

2

t_{low min}

V3

U_{V high}

U_V

3

U_{V low}

0

t

1

t_h

U_o1

5.1 V

4.875 V

2.0 V

0

t

U

_i[V DC]

U_ti

+

U_hi

U_ti

t

0

Input voltage failure

Switch-on cycle

Input voltage sag

Switch-on cycle and subsequent

input voltage failure

Output voltage monitoring

V2 U_V

U_{V high}

4

U_{V low}

t

0

2

t_{low min}

V3 U_V

U_{V high}

3

4

U_{V low}

0

U_o1

5.1 V

4.875 V

2.0 V

0

t

¹VME request: minimum 4 ms

²t_{low min}= 40...200 ms, typically 80 ms

U_i

³U_Vlevel not defined at U_o1< 2.0 V

U_ti

+

U_hi

U_ti

⁴The V signal drops simultaneously with the output voltage. If the

pull-up resistor R_Pis connected to Vo1+. The V signal remains

high if R_Pis connected to an external source.

t

0

Output voltage failure

Fig. 39

Relationship between U_i, U_o1, U_V, I_Vand U_o1/U_{o nom}ver-

sus time.

Edition 01/01.2001

25/26

Cassette Style

150 Watt AC-DC Converters

K Series

B1 Cooling Plate (see: Mechanical Data)

Where a cooling surface is available, we recommend the

use of a cooling plate (option B1) instead of the standard

heatsink. The mounting system should ensure sufficient

cooling capacity to guarantee that the maximum case tem-

perature T_{C max}is not exceeded. The cooling capacity is cal-

culated by:

(100% – h)

P_Loss= –––––––––– (U_o• I_o)

h

Efficiency h see: Type Survey.

Elongated case for 220 mm rack depth: Option B2.

Accessories

A variety of electrical and mechanical accessories are

available including:

– Front panels for 19" rack mounting, Schroff and Intermas

systems.

– Mating H15 and H15 S4 connectors with screw, solder,

fast-on or press-fit terminals.

– Connector retention facilities.

– Code key system for connector coding.

– Chassis mounting plates for mounting the 19" cassette to

a chassis/wall where only frontal access is given.

– Universal mounting bracket for DIN-rail or chassis moun-

ting.

For more detailed information please refer to: Accessory

Products.

Front panels

H15/H15 S4 female connector,

Code key system

Mounting plate,

Connector retention clips

Universal mounting bracket for DIN-rail mounting.

Edition 01/01.2001

26/26


型号：	LK1001-9ERD7TB2
厂家：	BEL FUSE INC.
描述：	AC-DC Regulated Power Supply Module, 1 Output, 150W, Hybrid, METAL, CASE K02, MODULE
文件：	总26页 (文件大小：601K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LK1001-9ERD7TB2 [BEL]

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