LK1301-9RD1B2 [BEL]
AC-DC Regulated Power Supply Module, 1 Output, 150W, Hybrid, METAL, CASE K02, MODULE;型号: | LK1301-9RD1B2 |
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:1027K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Cassette Style
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 TC exceeds 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
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 5/5.2000
1/26
Cassette Style
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
Uo nom
[V DC]
Io nom
[A] 2
Uo nom
[V DC]
Io nom
[A] 2
Ui min...Ui max
85…264 V AC (88...372 V DC)
hmin
[%]
1 Efficiency at Ui nom and Io 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
84
85
-9
E
D
V 5
P
T
B1
B2
2 If the output voltages are increased
above Uo nom via R-input control, op-
tion P setting, remote sensing or op-
tion T, the output currents should be
reduced accordingly so that Po 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
83
3 Series 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
83
4 Second output semi-regulated.
5 Option V for LK 1001 types only.
Type Key
Type Key
L K 2 5 40 -7 E R P D V T B1
Input voltage range Ui: 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), Uo1 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, Uo1/2 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 TA:
–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
1 External wiring of main and second output depending upon the desired output configuration (see: R-Function for different output con-
figurations).
2 Feature R excludes option P and vice versa.
3 Option D excludes option V and vice versa.
4 Option 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 5/5.2000
2/26
Cassette Style
AC-DC Converters
K Series
Functional Description
age Uo1 and 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
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
Y
12 Vo1+
14 Vo1–
4
Y
2
Vo2+
6
30
32
P
8
10
Vo2–
Y
Y
24
–
+
Fig. 2
Block diagram of symmetrical double output converters LK 2000
1 Transient suppressor (VDR)
2 Inrush current limiter (NTC or option E), -9 version exclude the NTC
3 Input fuse
Edition 5/5.2000
3/26
Cassette Style
AC-DC Converters
K Series
Electrical Input Data
General Conditions
– TA = 25°C, unless TC is specified.
– Pin 18 connected to pin 14, Uo adjusted to Uo nom (option P); R input not connected.
– Sense line pins S+ and S– connected to Vo+ and Vo– respectively.
Table 2: Input data
1 With double output modules, both outputs
loaded with Io nom
Input
LK
2 Valid 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
Ui
Operating input voltage Io = 0…Io nom
TC min…TC max
V AC
88
V DC
3
3 LK types may also be operated in DC mode.
(See: K Series, DC-DC Converters)
Ui nom Nominal input voltage
310
0.4
1
Ii
Input current
Ui nom, Io nom
A
Pi0
Pi inh
Ri
No-load input power
Idle input power
Input resistance
Ui min…Ui max
unit inhibited
TC = 25°C
2.5
1.5
W
480
3200
210
mΩ
µF
RNTC NTC resistance 2
Ci Input capacitance
AC frequency range 47...440 Hz (440 Hz
for 115 V mains).
400
Above 70 Hz (at Ui = 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.
Ui RFI Conducted input RFI
Radiated input RFI
EN 55022
Ui nom, Io nom
B
B
Ui abs Input voltage limits
without damage
–400
–400
400
400
V DC
Vp
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).
Ui source
Iinr p = ––––––––––––––––
(Rs ext + Ri + RNTC
)
04040
Table 3: Fuse Specification
Rs ext
Iinr p
Ri
RNTC
Module
Fuse type
Fuse rating
LK 1
slow-blow
SPT
4 A, 250 V
+
Ui source
Ci int
1 Fuse size 5 × 20 mm.
Input Under-/Overvoltage Lock-out
If the input voltage remains below approx. 0.8 Ui min or ex-
ceeds approx. 1.1 Ui max, an internally generated inhibit sig-
nal disables the output(s). When checking this function the
absolute maximum input voltage rating Ui abs should be
considered! Between Ui 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
Ii (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)
Ui DC
_______
Ui min DC
1
2
3
4
5
6
Fig. 4
Input current versus relative input voltage
Edition 5/5.2000
4/26
Cassette Style
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.
Iimp [A]
04050
130
Hold-up Time versus relative Input Voltage
100
th (ms)
04049
100.00
50
0
10.00
Ui AC
_______
2.00
2
3
t [ms]
Ui min AC
1
1
2
3
4
5
6
Fig. 6
Inrush current versus time at Ui max, Rext = 0
Fig. 5
Hold-up time th versus relative input voltage Ui/Ui min
.
Electrical Output Data
General Conditions
– TA = 25°C, unless TC is specified.
– Pin 18 (i) connected to pin 14 (S–/Vo1–), Uo adjusted to Uo 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
Uo
Output voltage
Ui nom, Io nom
5.07
5.13 11.93
12.07 14.91
15.09 23.86
24.14
V
Uop
Overvoltage protection
(supressor diode)
7.6
21
26.5
10
43.5
6.0
Io nom Output current 1
Ui min...Ui max
TC min...TC max
25.0
12.0
A
IoL
uo
Output current limit 4
Ui min...Ui max
26
12.2
10.2
6.2
7
Output Low frequency Ui nom, Io nom
5
5
5
5
5
5
5
5
mV
pp
voltage
noise
IEC/EN 61204
BW = 20 MHz
Switching freq.
Total
50
70
60
90
DUo U Static line regulation
Ui min...Ui nom
Ui nom...Ui max
,
,
±15
±25
±30
±30 mV
Io nom
DUo I Static load regulation
Ui nom, Io =
(0.1...1) Io nom
20
25
30
40
5
uo d
Dynamic Voltage
Ui nom, Io =
±100
±100
±100
±80
load
deviation
I
o nom ↔ 1/
2
Io nom
regulat.
IEC/EN 61204
5
td
Recovery time
0.3
0.4
0.4
0.4
ms
aUo
Temperature coefficient Ui min...Ui max
of output voltage 6
0...Io nom
–1
–1
–1
–1
mV/K
1 If the output voltages are increased above Uo nom through R-input control, option P setting, remote sensing or option T, the output cur-
rents should be reduced accordingly so that Po nom is not exceeded.
4 See: Output Voltage Regulation of Single Output Units or Double Output Modules with Outputs 1 and 2 Connected in Series.
5 See: Dynamic load regulation of Uo1 and Uo2.
6 Negative temperature coefficient (0...–3 mV/cell and K) available on request.
7 Measured 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 5/5.2000
5/26
Cassette Style
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
Uo
Output voltage
Ui nom, Io nom
Uop
Overvoltage protection
(supressor diode)
Io nom Output current 1
Ui min...Ui max
TC min...TC max
6.0
5.0
3.0
A
IoL
uo
Output current limit 4
Ui min...Ui max
6.2
5.2
3.2
7
Output Low frequency Ui nom, Io nom
5
5
5
5
5
5
mVpp
voltage
noise 3
IEC/EN 61204
BW = 20 MHz
Switching freq.
Total
80
±40
80
±30
90
±50
DUo U Static line regulation
Ui min...Ui nom
Ui nom...Ui max
Io nom
mV
DUo I Static load regulation
Ui nom, Io =
(0.1...1) Io nom
40
30
40
5
uo d
Dynamic Voltage
Ui nom, Io =
±140
±140
±90
load
deviation
I
o nom ↔ 1/
2
Io nom
regulat.
IEC/EN 61204
5
td
Recovery time
0.2
0.2
0.2
ms
aUo
Temperature coefficient Ui min...Ui max
of output voltage 6
0...Io nom
–2.2
–2.2
–2.6
mV/K
1 If the output voltages are increased above Uo nom through R-input control, option P setting, remote sensing or option T, the output cur-
rents should be reduced accordingly so that Po nom is not exceeded.
2 Series connection for Uo nom = 24 V, 30 V or 48 V, see: R-Function for different output configurations.
3 Shortest possible wiring for series connection at the connector.
4 See: Output Voltage Regulation of Single Output Units or Double Output Modules with Outputs 1 and 2 Connected in Series.
5 See: Dynamic load regulation of U01 and U02.
6 Negative temperature coefficient (0...–3 mV/cell and K) available on request.
7 Measured 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 5/5.2000
6/26
Cassette Style
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
Uo
Output voltage
Ui nom, Io nom
11.93
12.07 11.82
12.18 14.91
15.09 14.78
15.22
V
A
Uop
Overvoltage protection
(supressor diode)
19
19
24
24
Io nom Output current 3
Ui min...Ui max
TC min...TC max
6.0
6.0
5.0
5.0
IoL
uo
Output current limit 4
Ui min...Ui max
6.2
6.2
5.2
5.2
8
Output Low frequency Ui nom, Io nom
3
3
3
3
3
3
3
3
mVpp
voltage
noise
IEC/EN 61204
BW = 20 MHz
Switching freq.
Total
40
25
50
20
DUo U Static line regulation
Ui min...Ui nom
Ui nom...Ui max
Io nom
±30
±40
±30
±40 mV
5
5
DUo I Static load regulation
Ui nom, Io =
(0.1...1) Io nom
100
100
5
6
uo d
Dynamic Voltage
Ui nom, Io =
±80
±80
load
deviation
I
o nom ↔ 1/
2
Io nom
regulat.
IEC/EN 61204
6
td
Recovery time
0.2
0.2
ms
aUo
Temperature coefficient Ui min...Ui max
of output voltage 7
0...Io nom
–1.1
–1.1
mV/K
Table 4d: Output data double output modules
Output
LK 2660
24 V/24 V
1 Depending upon the desired output
configuration the wiring should be
made as shown in: R-Function for
different output configurations.
2 Same conditions for both outputs.
3 If the control voltages are in-
creased above Uo nom via R-input
control, option P setting, remote
sensing or option T, the output cur-
rents should be reduced accord-
ingly so that Po nom is not ex-
ceeded.
(Outputs independently loaded) 1
Characteristics
Conditions
Output 1
Output 2
min typ max min typ max Unit
2
Uo
Output voltage
Ui nom, Io nom
23.86
24.14 23.64
24.36
V
A
Uop
Overvoltage protection
(supressor diode)
37
37
Io nom Output current 3
Ui min...Ui max
TC min...TC max
3.0
3.0
IoL
uo
Output current limit 4
Ui min...Ui max
3.2
3.2
4 See: Output voltage regulation of
single output units.
8
Output Low frequency Ui nom, Io nom
3
3
3
3
mVpp
5 Condition for specified output.
Other output loaded with constant
current Io = Io 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
DUo U Static line regulation
Ui min...Ui nom
Ui nom...Ui max
Io nom
,
,
±30
±50 mV
6 See: Typical dynamic load regula-
5
tion of Uo1 and Uo2
.
DUo I Static load regulation
Ui nom, Io =
(0.1...1) Io nom
50
7 Negative temperature coefficient
(0....–3 mV/cell and K) available on
request.
5
6
uo d
Dynamic Voltage
Ui nom, Io =
±50
load
deviation
I
o nom ↔ 1/
2
Io nom
8 Measured 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
td
Recovery time
0.2
ms
aUo
Temperature coefficient Ui min...Ui max
of output voltage 7
0...Io nom
-1.3
mV/K
Edition 5/5.2000
7/26
Cassette Style
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 TA 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 TC (see: Mechanical Data) will approach the
indicated value TC max after the warm-up phase. However,
the relationship between TA and TC depends 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. TA max is therefore, contrary to TC 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 TC remains 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 TA to be higher than 71°C (e.g. 85°C) if TC max is not
exceeded.
05072
For -7 or -9 units at an ambient temperature TA of 85°C with
only convection cooling, the maximum permissible current
for each output is approx. 40% of its nominal value as per
figure.
Uo1
Uo1d
Ur
Ur
Uo1d
Io/Io nom
td
td
Forced cooling
t
t
1.0
Uo2
0.9
0.8
0.7
Uo2d
Convection cooling
0.6
TC max
Io1/Io1 nom
Io2/Io2 nom
0.5
1
0.4
0.3
0.2
0.1
0.5
0
<10 µs
<10 µs
t
0
T [°C]
A
Fig. 8
Control deviation of uo1/2 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
Uo
A temperature sensor generates an internal inhibit signal
which disables the outputs if the case temperature exceeds
TC max. The outputs are automatically re-enabled if the tem-
perature drops below this limit.
05068
Uo 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
Io1
IoL
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.
Io
Io nom
0
0.5
1.0
Fig. 9
o1 versus Io1 (typ.) of single output units
U
Edition 5/5.2000
8/26
Cassette Style
AC-DC Converters
K Series
Output Voltage Regulation of Double Output Modules
with Output 1 and 2 in Symmetrical Configuration
[V] Uo2
26.0
Output 1 is under normal conditions regulated to Uo1 nom
independent of the output currents.
,
05107
Io1 = 3.0 A
Io1 = 2.0 A
Io1 = 1.0 A
Io1 = 0.5 A
Io1 = 0.3 A
Uo2 is dependent upon the load distribution. When both out-
puts are loaded with more than 10% of Io nom, the deviation
of Uo2 remains within ±5% of the value of Uo1. The following
3 figures show the regulation with varying load distribution.
If Io1 = Io2 or the two outputs are connected in series, the de-
viation of Uo2 remains within ±1% of the value of Uo1 pro-
vided that a total load of more than 10% of Io 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] Uo2
05105
Io2
[A]
12.6
0
0.5
1
1.5
2
2.5
3
3.5
4
Io1 = 6.0 A
Io nom
Io1 = 4.5 A
Io1 = 3.0 A
12.4
Fig. 12
LK 2660: DUo2 (typ.) versus Io2 with different Io1
Io1 = 1.5 A
Io1 = 0.6 A
12.2
12.0
11.8
11.6
11.4
11.2
Io2
0
1
2
3
4
5
6
7
8
[A]
Io nom
Fig. 10
LK 2320: DUo2 (typ.) vs. Io2 with different Io1
[V] Uo2
05106
15.75
Io1 = 5.00 A
Io1 = 3.75 A
Io1 = 2.50 A
Io1 = 1.25 A
Io1 = 0.50 A
15.50
15.25
15.00
14.75
14.50
14.25
14.00
Io2
0
1
2
3
4
5
6
7
[A]
Io nom
Fig. 11
LK 2540: DUo2 (typ.) versus Io2 with different Io1
Edition 5/5.2000
9/26
Cassette Style
AC-DC Converters
K Series
Auxiliary Functions
i Inhibit for Remote On and Off
06001
Uo/Uo nom
1
Note: With open i input: Output is disabled (Uo = 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
tf
tr
Inhibit
1
t
0
Fig. 15
06031
Output response as a function of inhibit control
Vo+
i
Vi+
Iinh
Uinh
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 Uo 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 Uinh and Iinh
.
Iinh [mA]
Uinh = 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
Uo = on
Uo = 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
Uinh [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
<0.25 V
Typical inhibit current Iinh versus inhibit voltage Uinh
12 V, 15 V
Table 5: Inhibit characteristics
If the output voltages are increased above Uo nom via R-in-
put control, option P setting, remote sensing or option T, the
output currents must be reduced accordingly so that
Po nom is not exceeded.
Characteristic
Conditions
min typ max Unit
Uinh Inhibit Uo = on Ui min…Ui max –50
0.8
50
V
voltage
Uo = 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.
Iinh Inhibit current
Uinh = 0
–400 µA
tr
tf
Rise time
Fall time
30
depending on Io
ms
Edition 5/5.2000
10/26
Cassette Style
AC-DC Converters
K Series
Programmable Output Voltage (R-Function)
– If the output voltages are increased above Uo nom via R-
input control, option P setting, remote sensing or option
T, the output current(s) should be reduced accordingly so
that Po 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
Uext or a resistor Rext to 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 Uo nom
.
a) Adjustment by means of an external control voltage Uext
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% Uo nom
U
.
Uext = –––o––– • 2.5 V (approximate formula)
Uo 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 (Uo < Uo nom) to
achieve an output voltage adjustment range of approxi-
mately 0...100% Uo nom
+
16
14
Module
Module
Uext
S–
or: Between pin 16 and pin 12 (Uo > Uo nom) to achieve
an output voltage adjustment range of approximately
Vo1–
P
N
100...110% Uo nom
.
Vo1+
Warning:
S+
R
– Uext shall never exceed 2.75 V DC.
12
R'ext
Rext
– The value of R'ext shall never be less than the lowest
value as indicated in table R'ext (for Uo > Uo 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: Rext for Uo < Uo nom; approximate values (Ui nom, Io nom, series E 96 resistors); R'ext = ∞
Uo nom = 5.1 V
Uo (V) Rext [kΩ]
Uo nom = 12 V
Uo [V] 1
Uo nom = 15 V
Uo [V] 1
Uo nom = 24 V
Uo [V] 1
Rext [kΩ]
Rext [kΩ]
Rext [kΩ]
0.825
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.422
1
2
3
4
5
6
7
8
9
10
11
4
6
8
10
12
14
16
18
20
22
0.825
1.3
2
4
6
8
9
10
11
12
13
14
4
8
0.56
1.47
2.61
4.64
6.19
8.25
11.0
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
1.96
2.87
3.83
5.61
8.25
12.1
19.6
46.4
1.62
2.16
3.83
5.61
9.09
14.7
28.7
196
1.96
2.87
3.83
5.62
8.28
12.1
19.6
42.2
12
16
18
20
22
24
26
28
Table 7b: R’ext for Uo > Uo nom; approximate values (Ui nom, Io nom, series E 96 resistors); Rext = ∞
Uo nom = 5.1 V
Uo [V] R'ext [kΩ]
5.15 422
Uo nom = 12 V
Uo [V] 1
Uo nom = 15 V
Uo [V] 1
Uo nom = 24 V
R'ext [kΩ]
R'ext [kΩ]
Uo [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
1780
909
623
464
383
316
286
234
196
162
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
1470
750
511
383
316
261
237
215
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
3160
1620
1100
825
681
562
511
464
422
383
5.2
5.25
5.3
215
147
110
5.35
5.4
90.9
75
5.45
5.5
61.9
56.2
26.25
26.4
1 First column: single output units or double output units with separated outputs, second column: outputs in series connection
Edition 5/5.2000
11/26
Cassette Style
AC-DC Converters
K Series
R-Function for different output configurations
06004
06005
+
Vo2+
+
4
Vo2+
Vo2+
Vo2–
Vo2–
Vo1+
Vo1–
4
6
Vo2+
Vo2–
Vo2–
Vo1+
Vo1–
6
8
12 V
15 V
24 V
1
Uo1
24 V
30 V
48 V
8
1
Uo1
10
12
14
–
10
12
2
–
14
16
Rext R'ext
Rext R'ext
16
R
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+
Vo2–
Vo2–
Vo1+
Vo1–
4
6
Vo2+
Vo2+
Vo2–
Vo2–
Vo1+
Vo1–
+
4
6
1
1
Uo2
–12/–15/–24 V
8
–
8
Uo2
+12/+15/+24 V
0 V
Uo1
10
12
+
10
12
2
1
1
Uo1
+12/+15/+24 V
+
14
16
14
16
Rext R'ext
Rext R'ext
R
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 Uo1 and Uo2: +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 Uo1 and Uo2: ±12 V or ±15 V or
±24 V.
1 A ceramic multilayer capacitor connected across the load re-
duces ripple and spikes.
06008
+
Vo2+
Vo2+
Vo2–
Vo2–
Vo1+
Vo1–
4
6
2 Shortest possible wiring for series connection at the female con-
nector
12 V
15 V
24 V
1
1
Uo2
–
8
+
10
12
12 V
15 V
24 V
Uo1
–
Remarks:
14
16
Rext R'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 Uo1 and Uo2: 12 V/12 V or 15 V/15 V or
24 V/24 V, the outputs are galvanically isolated.
Please note: Uo2 varies depending upon its own load and
the load on output 1.
Edition 5/5.2000
12/26
Cassette Style
AC-DC Converters
K Series
Display Status of LEDs
06002
Uo1 > 0.95...0.98Uo1 adj
Fig. 18
OK
i
Io L
LEDs "OK", "i" and "Io L" status versus input voltage
Conditions: Io £ Io nom, TC £ TC max, Uinh £ 0.8 V
Ui uv = undervoltage lock-out, Ui ov = overvoltage lock-out
Ui
Ui uv Ui min
Ui max Ui ov Ui abs
Uo1 > 0.95...0.98Uo1 adj
Uo1 < 0.95...0.98Uo1 adj
OK
Io L
LEDs "OK" and "Io L" status versus output current
Conditions: Ui min...Ui max, TC £ TC max, Uinh £ 0.8 V
Io
Io nom
IoL
i
i
LED "i" versus case temperature
Conditions: Ui min...Ui max, Io £ Io nom, Uinh £ 0.8 V
TC
TC max
Uinh threshold
TPTC threshold
LED "i" versus Uinh
Conditions: Ui min...Ui max, Io £ Io nom, TC £ TC max
Ui 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 Uo1 are 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 Uo = 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
(Irms bat /Iload
)
[dBµV/m]
07077
06037
50
0.6
A
40
B
0.4
0.2
30
20
10
0
1.0
10
300
100
Rsys [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
Ui nom and Io 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 Ui nom and
Io nom
.
Edition 5/5.2000
13/26
Cassette Style
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 Vp
1500 Vp
3000 Vp
4000 Vp
7000 Vp
1.5 • Ubatt
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
yes
A
B
Direct transient
C
D
E
F
G
H
J
+i/c, –i/c
960 Vp
1800 Vp
3600 Vp
4800 Vp
8400 Vp
1800 Vp
3600 Vp
4800 Vp
8400 Vp
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 Vp
330 Ω
10 positive and
10 negative
discharges
yes
A
air discharge
15000 Vp
Electromagnetic IEC/EN
3
4
antenna
10 V/m
AM 80%
1 kHz
n.a.
26…1000 MHz
yes
yes
A
A
field
61000-4-3
Electromagnetic ENV 50204
field,
pulse modulated
50% duty cycle,
200 Hz repetition
frequency
900 ±5 MHz
Electrical fast
transient/burst
IEC/EN
61000-4-4
capacitive, o/c
2000 Vp bursts 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 Vp
Surge
IEC/EN
61000-4-5
3
4
i/c
2000 Vp
1.2/50 µs
12 Ω
2 Ω
5 pos. and 5 neg.
surges per
coupling mode
yes
yes
A
A
+i/–i
Conducted
disturbances
IEC/EN
61000-4-6
3
i, o, signal wires
10 Vrms
(140 dBµV)
AM 80%
1 kHz
150 Ω
0.15...80 MHz
1 Related and previous standards are referenced in Technical Information: Standards.
2 i = input, o = output, c = case.
3 A = Normal operation, no deviation from specifications, B = Normal operation, temporary deviation from specs possible.
4 Test in progress, please consult factory.
Note: Previous standards are referenced in: Technical In-
formation: Standards
Edition 5/5.2000
14/26
Cassette Style
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 gn = 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 gn = 392 m/s2
6 ms
6000 (1000 each direction)
Unit
operating
Vibration
(sinusoidal)
IEC/EN/DIN EN 60068-2-6
MIL-STD-810D section 514.3
Acceleration amplitude:
0.35 mm (10...60 Hz)
5 gn = 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)
Fda Random vibration IEC 60068-2-35
Acceleration spectral density: 0.05 gn2/Hz
Unit
wide band
Reproducibility
high
DIN 40046 part 23
Frequency band:
Acceleration magnitude:
Test duration:
20...500 Hz
4.9 gn rms
3 h (1 h each axis)
operating
Kb
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
–25
–40
max
71
min
–40
–40
–55
max
71
Unit
TA Ambient temperature
TC Case temperature
TS Storage temperature
Ui min...Ui max
Io = 0...Io nom
°C
95
95
Not operational
100
100
Table 11: MTBF
Values at Specified
Type
Ground Benign
Ground Fixed
Ground Mobile
Unit
Case Temperature
40°C
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
1 Calcualted in accordance with MIL-HDBK217F.
2 Statistical values, based on an average of 4300 working hours per year and in general field use, over 3 years.
Edition 5/5.2000
15/26
Cassette Style
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 (Uo)
Option D (Uto)
Option D (Uti)
LED i (red)
LED OK (green)
LED IoL (red)
Measuring point of
case temperature TC
= 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 TC
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 5/5.2000
16/26
Cassette Style
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
10010
Fixtures for connector
retention clips V
Fixtures for connector
retention clips V
(see Accessory Products)
(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
Pin
No.
Connector type H15 S4
LK 1001
Connector type H 15
LK 1301/1501/1601
Output 1
LK 2000
Output 2
Output 2
Output 2
Output 2
Output 1
Output 1
Control of Uo1
Inhibit
4
Vo1+
Vo1+
Vo1–
Vo1–
S+
Vo2+
Vo2+
Vo2–
Vo2–
Vo1+
Vo1–
R 1
Vo1+
Output 1
Output 1
6
Output 1
8
Output 1
Vo1–
10
12
14
16
18
20
Output 1
S+
S–
R 1
i
Sense
Sense
Sense
S–
Sense
Control of Uo1
Inhibit
R 1
Control of Uo1
Inhibit
i
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
N
P
P
N
N
P
P
N
P
28
30
32
Neutral
Phase
Phase
Neutral
Phase
Phase
Phase
1 Feature R excludes option P and, vice versa
2 Leading pin (pregrounding)
3 Option 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 5/5.2000
17/26
Cassette Style
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 TC 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
–
–
kVrms
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
kVrms
Insulation resistance at 500 V DC
>300
>300
>300
>100 2
MΩ
1 In accordance with IEC/EN 60950 only subassemblies are tested in factory with this voltage.
2 Tested 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 5/5.2000
18/26
Cassette Style
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
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 1 and installation
SELV circuit
≤250 V AC
according to the applicable standards
1 The 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 5/5.2000
19/26
Cassette Style
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
Input and/or output undervoltage monitoring circuitry
Current sharing
TA = –40...71°C
E
Active inrush current limitation
P 1
Adjustment range +10/-60% of Uo 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
1 Function R excludes option P and vice versa
2 Option D excludes option V and vice versa
3 Only available if main output voltage Uo1 = 5.1 V
-9 Extended Temperature Range
10065
Ii [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
Ui = 230 V AC
Po = Po nom
20
15
10
5
Capacitor Ci
fully charged
P Potentiometer
Normal operation
(FET fully conducting)
The potentiometer provides an output voltage adjustment
range of +10/–60% of Uo 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 Uo nom via R-in-
put control, option P setting, remote sensing or option T, the
output current(s) should be reduced accordingly so that
Po nom is not exceeded.
0
20
tinr 40
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 (TC = 95°C) max. 1 cycle every
8 sec.
Table 17: Inrush current characteristics with option E
Characteristics
LK
Unit
Ui = 230 V AC
typ
–
max
21.7
50
Iinr p
tinr
Peak inrush current
Inrush current duration
A
35
ms
Control
FET
Rectifier
RS
Ci
RI
Fig. 28
Option E block diagram
Edition 5/5.2000
20/26
Cassette Style
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–
1 Leads should have equal length and cross sections and should
run in the same cable loom.
T
Module
Vo1+
2 Diodes recommended in redundant operation only
3 DC 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
Ut. The return for this signal is Vo1–. The D output recovers
when the monitored voltage(s) exceed(s) Ut + Uh. The
threshold level Uti is adjusted in the factory. The threshold
level Uto is 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 Ut
Uti Uto
Typical hysteresis Uh [% of Ut]
for Ut min...Ut max
JFET
NPN
Ui
Uo1
Uhi
Uho
2.5...0.6
-
D1
D2
D3
D4
D0
D5
D6
D7
D8
D9
no
yes
yes
no
yes
no
-
3.5...40 V 1
-
-
1
1
Ui min...Ui max
Ui min...Ui max
-
3.4...0.4
3.4...0.4
-
2
2
yes
yes
yes
no
(0.95...0.985 Uo1
(0.95...0.985 Uo1
3.5...40 V 3
-
)
"0"
)
"0"
no
-
-
2.5...0.6
-
3 4
3 4
3 4
1
yes
yes
yes
yes
Ui min...Ui max
Ui min...Ui max
Ui min...Ui max
Ui min...Ui max
3.4...0.4
3.4...0.4
3.4...0.4
3.4...0.4
yes
yes
yes
3.5...40 V 3
(0.95...0.985 Uo1
3.5...40 V 1
2.5...0.6
"0"
2
)
-
DD
2.5...0.6
1 Threshold level adjustable by potentiometer
2 Fixed value. Tracking if U01 is adjusted via R-input, option P or sense lines.
3 The 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)!
4 Adjusted at Io nom
Edition 5/5.2000
21/26
Cassette Style
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. UD ≤ 0.4 V (logic low) corresponds to a
monitored voltage level (Ui and/or Uo1) <Ut. The current ID
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
D
U
D
Ui, Uo1 status
Ui or Uo1 < Ut
D output, UD
Vo1–
low, L, UD ≤ 0.4 V at ID = 2.5 mA
high, H, ID ≤ 25 µA at UD = 5.25 V
Fig. 33
Ui and Uo1 > Ut + Uh
Option D0...D4: JFET output, ID ≤ 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. UD < 0.4 V (logic low) corresponds to a monitored
voltage level (Ui and/or Uo1) > Ut + Uh. The current ID
through the open collector should not exceed 20 mA. The
NPN output is not protected against external overvoltages.
UD should not exceed 40 V.
R
p
I
D
D
U
D
Ui, Uo1 status
Ui or Uo1 < Ut
D output, UD
Vo1–
high, H, ID ≤ 25 µA at UD = 40 V
low, L, UD ≤ 0.4 V at ID = 20 mA
Fig. 34
Option D5...DD: NPN output, Uo1 ≤ 40 V, ID ≤ 20 mA
Ui and Uo1 > Ut + Uh
Table 19: D-output logic signals
Version of D
Ui < Ut resp. Uo < Ut
Ui > Ut + Uh resp. Uo > Ut
Configuration
JFET
D1, D2, D3, D4, D0
D5, D6, D7, D8, D9, DD
low
high
low
high
NPN
11021
Threshold tolerances and hysteresis:
UD
DUti
Uhi
If Ui is 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 ∆Uti across input filter and rectifier. The threshold lev-
els of the D0 and D9 options are factory adjusted at nomi-
nal output current Io nom and at TA = 25°C. The value of ∆Uti
depends upon the threshold level Ut, temperature and input
current. The input current is a function of the input voltage
and the output power.
UD high
P
P
P
P
P
P
UD low
Ui
Uti
Fig. 35
Definition of Uti, DUti and DUhi (JFET output)
Edition 5/5.2000
22/26
Cassette Style
AC-DC Converters
K Series
D-signal with respect to input and output voltage versus time:
Input voltage monitoring
NPN
UD
11008
UD high
3
3
3
3
UD low
0
t
ID
ID high
ID low
0
t
JFET UD
UD high
UD low
0
t
1
4
4
4
th
tlow min
tlow min
tlow min
thigh min
Uo1
Uo1 nom
1
th
1
0.95
t
t
0
Ui [V DC]
Uti +Uhi
Uti
0
Input voltage failure
Switch-on cycle
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
Output voltage monitoring
NPN UD
2
UD high
3
3
UD low
0
t
t
ID
ID high
ID low
0
UD
JFET
UD high
UD low
0
t
t
4
tlow min
1 Hold-up time see section Electrical Input Data.
2 With output voltage monitoring, hold-up time th = 0.
3 The signal will remain high if the D output is connected to
an external source.
Uo1
Uo1 nom
Uto +Uho
Uto
4 tlow min = 100...170 ms, typically 130 ms.
0
Output voltage failure
Fig. 36
Relationship between Ui, Uo1, UD, Uo1/Uo nom versus time
Edition 5/5.2000
23/26
Cassette Style
AC-DC Converters
K Series
V ACFAIL signal (VME)
Formula for threshold level for desired value of th:
Available for units with Uo1 = 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 • Po • (th + 0.3 ms) • 100
Uti = ––––––––––––––––––––– + Ui min
Ci min • h
2
where as:
The low state level of the ACFAIL signal is specified at a
sink current of IV ≤ 48 mA to UV ≤ 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.
Ci min = internal input capacitance [mF]
Po
h
= output power [W]
= efficiency [%]
= hold-up time [ms]
th
Ui min = minimum input voltage [V] 1
Uti
= threshold level [V]
After the ACFAIL signal has gone low, the VME standard
requires a hold-up time th of 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 th is provided by the internal input capacitance.
Consequently the working input voltage and the threshold
level Uti should be adequately above the minimum input
voltage Ui min of the converter so that enough energy is re-
maining in the input capacitance.
1 Min. input voltage according to Electrical Input Data. For output
voltages Uo > Uo nom, the minimum input voltage increases pro-
portionally to Uo/Uo
.
nom
Remarks:
Option V2 and V3 can be adjusted by potentiometer to a
threshold level between Ui min and Ui 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 Ut. The return for this
signal is Vo1–. The V output recovers when the monitored
voltage(s) exceed(s) Ut + Uh. The threshold level Ut is 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 Ut i with resulting hold-up time
Types
Ci min
Uti
LK
0.21
120
4.2
Unit
mF
V DC
ms
th
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 Uh [% of Ut]
Ui
Uo1
for Ut min…Ut max
Uti
Uto
Uhi
Uho
–
1
1
–
V2
V3
V0
yes
yes
yes
yes
no
yes
no
Ui min...Ui max
Ui min...Ui max
3.4...0.4
3.4...0.4
3.4...0.4
3.4...0.4
2
2
0.95...0.985 Uo1
–
"0"
–
3 4
Ui min...Ui max
Ui min...Ui max
3 4
yes
0.95...0.985 Uo1
"0"
1 Threshold level adjustable by potentiometer.
2 Fixed value between 95% and 98.5% of Uo1 (tracking).
3 Adjusted at Io nom.
4 Fixed 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. UV ≤ 0.6 V (logic low) corre-
sponds to a monitored voltage level (Ui and/or Uo1) <Ut.
The current IV through the open collector should not exceed
50 mA. The NPN output is not protected against external
overvoltages. UV should not exceed 60 V.
I
V
V
U
V
Ui, Uo1 status
V output, UV
Vo1–
Ui or Uo1 < Ut
low, L, UV ≤ 0.6 V at IV = 50 mA
high, H, IV ≤ 25 µA at UV = 5.1 V
Fig. 37
Output configuration of options V0, V2 and V3
Ui and Uo1 > Ut + Uh
Edition 5/5.2000
24/26
Cassette Style
AC-DC Converters
K Series
11023
UV
DUti
Uhi
Threshold tolerances and hysteresis:
If Ui is 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 DUti across input filter and rectifier. The threshold level
of option V0 is adjusted during manufacture at Io nom and TA
= 25°C. The value of DUti depends upon the threshold level
Ut, temperature and input current. The input current is a
function of input voltage and output power.
UV high
P
P
P
P
P
P
UV low
Ui
Uti
Fig. 38
Definition of Uti, DUti and Uhi
Input voltage monitoring
2
2
2
tlow min
tlow min
tlow min
V2
UV high
UV
3
3
3
11010
4
2
4
UV low
0
t
2
tlow min
tlow min
V3
UV high
UV
3
3
3
UV low
0
t
1
1
th
th
Uo1
5.1 V
4.875 V
2.0 V
0
t
Ui [V DC]
Uti + Uhi
Uti
t
0
Input voltage failure
Switch-on cycle
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
Output voltage monitoring
V2 UV
UV high
4
4
UV low
t
t
0
2
tlow min
V3 UV
UV high
3
3
4
UV low
0
Uo1
5.1 V
4.875 V
2.0 V
0
t
1 VME request: minimum 4 ms
2 tlow min = 40...200 ms, typically 80 ms
Ui
3 UV level not defined at Uo1 < 2.0 V
Uti + Uhi
Uti
4 The V signal drops simultaneously with the output voltage. If the
pull-up resistor RP is connected to Vo1+. The V signal remains
high if RP is connected to an external source.
t
0
Output voltage failure
Fig. 39
Relationship between Ui, Uo1, UV, IV and Uo1/Uo nom ver-
sus time.
Edition 5/5.2000
25/26
Cassette Style
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 TC max is not exceeded. The cooling capacity is cal-
culated by:
(100% – h)
PLoss = –––––––––– (Uo • Io)
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 5/5.2000
26/26
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