PM9110BFE_技术文档

SA9110A APPLICATION NOTE

sames

PM9110BF

MONOCHIP THREE PHASE BIDIRECTIONAL

KILOWATT HOUR METERING MODULE

FEATURES

according to IEC1107 Mode D

! Performsbidirectionalenergymetering

and includes a 7 digit LCD driver with

announciators

! Pulse output for calibration

! Total power consumption rating below

! 4externallyselectableon-chiptariffreg-

100mW

isters

! Uses current transformers for current

! An additional total energy register

sensing

! Meets the accuracy requirements for

! Operatesoverawidetemperaturerange

! Demonstrationsoftwareincluded

Class 1 AC Watt hour meters

! Optical interface for electronic reading

DESCRIPTION

The SAMES monochip three phase bidirectional kilowatt hour metering module, the

PM9110BF, provides all the required metering functions including energy measure-

ment, a 7 digit LCD driver, a tariff selection facility, an optical port as well as a pulse

output for calibration purposes.

Energy consumption is determined by the power measurement being integrated over

time.

This method of calculation takes the power factor into account.

This application utilises the SAMES SA9110AFA monochip three phase bidirectional

kilowatt hour metering IC for energy measurement.

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PM9110BFX

PDS038-SA9110A-001

REV. 2

28-06-00

PM9110BF

BLOCK DIAGRAM

LOAD

TARIF

DISPLAY

SCROLL

RESET

SELECT

PCLK

ISOLATED

CALIBRATION

INTERFACE

PDTA

PGM

SA9110A

PULSE

OUTPUT

BATTERY

BACKUP

OPTICAL

PORT

EXTERNAL

POWER SUPPLY

5V POWER

SUPPLY

DR-01103

SUPPLY

ABSOLUTE MAXIMUM RATINGS*

Parameter

Supply Voltage (Note 1)

Storage Temperature

Symbol

V_AC

Min

Max

540

+125

Unit

V

°C

T_STG

-25

-10

Operating Temperature

T_O

+70 (Note 2)

°C

Note 1:

Note 2:

Voltages are specified with reference to Neutral

The SA9110A integrated circuit is specified to operate over the temperature

range -10°C to +70°C. The module functionality will, however, depend upon

the external components used.

*Stresses above those listed under “Absolute Maximum Ratings” may cause permanent

damage to the device. This is a stress rating only. Functional operation of the device

at these or any other conditions above those indicated in the operational sections of this

specification, is not implied. Exposure to Absolute Maximum Ratings for extended

periods may affect device reliability.

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PM9110BF

ELECTRICAL CHARACTERISTICS

(Over the temperature range -10°C to +70°C, unless otherwise specified. Power

consumption figures are applicable to the PM9110BFE only.)

Parameter

Symbol Min Typ Max Unit Condition

Supply Voltage (x3 Phase)

(Continuous)

V_AC

180 230 265

V

PM9110BFE

Power Consumption

100 mW From external

power supply

Isolation Voltage¹

Opto-coupler Output

Current

Opto-coupler Input

Current

V_IS

I_O

2500

V

Continuous

10

mA V_OL= 1V

mA

I_I

10

Note 1: Isolation voltage may be specified, depending on customer requirements.

PIN DESCRIPTION

Designation

Description

SK1

5-Pin

Isolated programming interface

Header

connector

SK2

2-Pin

Isolated pulse output

Header

connector

MAINS

Voltage Supply Connected to Phase 1

Voltage Supply Connected to Phase 2

Voltage Supply Connected to Phase 3

Voltage Supply Connected to Neutral Line (common)

CT1

CT2

CT3

Phase 1 (Orientation indicated on PCB)

Phase 2 (Orientation indicated on PCB)

Phase 3 (Orientation indicated on PCB)

POWER

5V DC Supply Voltage

0V DC Supply Voltage

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PM9110BF

FUNCTIONAL DESCRIPTION

1. Energy Calculation

This Application Note should be read in conjunction with the SA9110A Data Sheet.

In the Application Circuit (see Figure 2), the output current from the current sensors

will be between 0 and 16µA_RMS. The current input stage of the module saturates at

input currents greater than18µA_RMS. The mains voltage (Voltage + 15% - 20%) is

used to perform the energy calculation, together with the current information from

the current sensor (current transformers).

The SA9110AFA integrated circuit may be adjusted to accomodate any voltage or

current values. The method for calculating external component values is described

in section 9 (Circuit Description).

The accumulated energy is directly displayed on a 7 digit LCD. This unique

application offers a host of additional features, which are dealt with below.

2. Electrostatic Discharge (ESD) Protection

The device's inputs/outputs are protected against ESD. The modules resistance to

transients will be dependant upon the protection components used.

3. Power Consumption

The overall power consumption rating for this power metering application (Figure

2), is under 100mW, excluding the current sensors.

4. Isolation

The programming interface and pulse output are isolated from the module which

is at mains potential, via opto-couplers.

5. Isolated Programming Interface

This isolated interface is provided to allow the user to programme the tariff register

values, calibration constants and manufacturer/meter identification codes. This

port is enabled by inserting the jumpers J8, J9 and J10. The programming may be

performed via the parallel port of a personal computer.

The designation of the pins on connector SK1 are given below:

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PM9110BF

Description

PC Parallel Connectors (Suggested)

Description

1

2

3

4

5

GND

PB

PCLK

PDTA

PGM

18

2

4

5

3

GND

D1

D3

D4

D2

Note: The recommended connections above are applicable for the demonstration

software provided with the PM9110BF.

6. Optical Port

TheopticalporthasbeendesignedtomeettheIEC1107ModeDspecification. This

facillity offers a pulse output as well as a serial data meter reading facility.

Three types of interfacing elements from the PM9110BF are available:

a) Infra-red optical port

b) Red LED

c) Opto-coupler

In order to maximise the intensity of the element, it is suggested that only one of

the outputs be used at any one time.

Jumper

Element

J5

J6

J7

Opto Coupler

Infra Red LED

Red LED

7. Liquid Crystal Display (LCD)

The PM9110BF has a LCD comprising of seven digits with announciatiors.

To cater for compatibility with future devices four jumpers are provided for

backplane driving configurations. The PM9110BF boards are shipped to the

customer with jumpers in a default configuration.

8. Tariff, Scroll and Reset Functions

Tariff Selection

A dual DIP switch provides the user with the facility to set the active tariff register

in which consumption will be accumulated.

The active register is indicated on the LCD.

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PM9110BF

Scroll Facility

The 4 registers may be sequentially displayed by activating the scroll button. The

contents of the register selected for display is retained on the display for a period

of10seconds, providedthatthepushbuttonisnotactivatedduringthisperiod. After

the 10 seconds has elapsed, the display defaults to the "active" register defined by

the status of the tariff DIP switches.

The register selected for display via the scroll button is indicated by the relevant

announciatiors.

Reset Function

By pressing the Reset button the contents of the RAM of the SA9110A device is set

to the default conditions.

Jumpers J8, J9 and J10 must be removed to use this feature.

It is strongly recommended that the provision of this facility is not made available

on production meters.

9. Circuit Description

The module is supplied from an external 5V DC supply.

The most important external components are:

C₇, C₉, C₁₀and C₁₁are the outer loop capacitors for the integrated oversampling

A/D converters. The typical value of C₇is 2.2nF and the value of C₉, C₁₀and C₁₁

is 560pF.

The actual values determine signal to noise and stability performance. The

tolerances should be within ± 10%.

C₄, C₅, C₆and C₈are the inner loop capacitors for the integrated oversampling A/

D converters. The typical value of C₄, C₅, C₆and C₈is 3.3nF. Values smaller than

0.5nF and larger than 5nF should be avoided.

Terminated current sensors (current transformers) are connected to the current

sensor inputs of the SA9110A through current setting resistors (R₈..R₁₃).

The resistor values should be selected for an input current of 16µA_RMSinto the

SA9110A at the rated line current.

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The values of these resistors should be calculated as follows:

Phase 1:

R₈= R₉= (I_L1/16mA) * R₁₈/2

Phase 2:

R₁₀= R₁₁= (I_L2/16mA) * R₁₉/2

Phase 3:

R₁₂= R₁₃= (I_L3/16mA) * R₂₀/2

Where I_LX

=

Secondary CT current at rated conditions.

Termination resistors of the three current transformers.

R₁₈, R₁₉and R₂₀

=

R + R_1B, R₄and R₁₅set the current for the phase 1 voltage sense input. R_2A+ R_2B,

R¹₅^A+P₅andR₁₆setthecurrentforphase2andR +R_3B,R₆+P₆andR₁₇setthecurrent

forphase3. Thevaluesshouldbeselectedsot³h^Aattheinputcurrentsintothevoltage

sense inputs (virtual ground) are set to 14mA_RMSfor rated line voltage. Capacitors

C1, C2 and C3 are for decoupling and phase compensation.

R₇defines all on-chip bias and reference currents. With R₇= 24kΩ, optimum

conditions are set. Any changes to R₇will affect the output quadratically (i.e: ∆R

= +5%, ∆f = +10%).

XTAL is a colour burst TV crystal (f = 3.5795MHz) for the oscillator. The oscillator

frequency is divided down to 1.7897MHz on-chip and supplies the A/D converters

and the digital circuitry.

10. Demonstration Software

Serial communication with the SA9110A device is identical to the communication

found on the Single Phase family member, SA9109A. For this reason the

demonstrationsoftwarefortheSinglePhaseApplicationcircuitisusedfortheThree

Phase Application.

The software package which accompanies the demonstration unit requires an IBM

or compatible PC with MS-DOS installed. This software, supplied on a 1.44M 3½"

disk, will allow the user to read and write settings from/to the demonstration unit.

Ensure that the communication connectors are in place prior to start.

Insert the diskette into the drive and at the DOS prompt, type A:SA9109[enter]

Context sensitive help screen for each input field or command prompt are available

by invoking [alt] H or [F1] key.

An introduction is available by pressing the [F1] key immediately after installation.

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PM9110BF

Figure 1: Connection Diagram

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PM9110BF

Figure 2: Application Circuit.

1 9

2 0

1 8

1 7

2 1

1 6

1 5

1 4

2 2

2 3

2 4

2 5

1 3

1 2

2 6

1 1

1 0

2 7

2 8

9

8

7

2 9

3 0

3 1

3 2

6

5

4

3

3 3

3 4

2

1

3 5

3 6

C O N 3

C O P 3

N C 6 1

6 1

4 4

2 6

2 4

1 3

1 1

1 0

N C 4 4

N C 2 6

N C 2 4

N C 1 3

N C 1 1

N C 1 0

C I N 2

C I P 2

S C R O L L

N C 9

9

S R [ 0 ]

S R [ 1 ]

C O N 2

C O P 2

6 7

6 8

S D 0

6 2

P B

C I N 1

C I P 1

6 6

P C L K

P D T A

6 3

6 4

C O N 1

C O P 1

P G M

6 5

R E S E T

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PM9110BF

Parts List for Application circuit: Figure 2

Item Symbol Description

Detail

1

U1

U2

SA9110AFA

ILQ74 (Quad opto-coupler)

4N35 (opto-coupler)

PLCC-68

DIP-16

DIP-6

2

3

U3

4

XTAL

R1A

R1B

R2A

R2B

R3A

R3B

R4

R5

R6

R7

R8

Crystal 3.5795MHz

Colour burst TV

5

Resistor, 1%, ¼W, metal

Resistor, 24k, 1%, ¼W, metal

Resistor, 22k, 1%, ¼W, metal

Resistor, 24k, 1%, ¼W, metal

Resistor, 2.7k, 1%, ¼W, metal

Resistor, 1M, 1%, ¼W, metal

Resistor, 2.7Ω, 1%, ¼W, metal

Resistor, 820Ω, 1%, ¼W, metal

Resistor, 2MΩ, 1%, ¼W, metal

Resistor, 680Ω, 1%, ¼W, metal

Resistor, 2.2kΩ, 1%, ¼W, metal

Potentiometer, 4.7kΩ

Note 4

6

7

8

9

Note 4

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

Note 1

R9

R10

R11

R12

R13

R15

R16

R17

R18

R19

R20

R21

R22

R23

R24

R25

R26

R27

R28

R29

P5

Note 1

Multi turn

Note 2

P6

C1

C2

C3

C4

C5

C6

Potentiometer, 4.7kΩ

Capacitor, electrolytic, 1µF, 16V

Capacitor, ceramic, 3.3nF

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PM9110BF

Parts List for Application circuit: Figure 2 (continued)

Item Symbol Description

Detail

44

45

46

47

48

49

50

51

52

53

54

55

C7

Capacitor, ceramic, 2.2nF

Capacitor, ceramic, 3.3nF

Capacitor, ceramic, 560pF

Capacitor, 100µF, 16V

Capacitor, 100nF

Capacitor, 100µF, 16V

Capacitor, 820nF

C8

C9

C10

C11

C12

C13

C14

C15

C16

BAT

Note 3

Battery, 1.2V

IR LED Infrared light emitting diode

56 RED LED Red light emitting diode

57

58

59

Q1

D1

D2

Photo transistor

Diode, 1N4148

60 SCROLL NO, push button

61

62

63

RESET NO, push button

TARIFF DIP switch, 2 pole

LCD

OEL-7678*

Note 1: Resistor (R₈, R₉, R₁₀, R , R and R₁₃) values are dependant upon the selected

values of the current tr¹a¹nsf¹o²rmer termination resistors R₁₈, R₁₉and R₂₀

Note 2: Capacitor values may be selected to compensate for phase errors caused by

the current transformers

Note 3: Capacitor (C13) to be positioned as close to Supply Pins (V_DD& V_SS) of IC-1, as

possible

Note 4: See the table below detailing the component values for the selected voltage

standard

*The LCD display is available from:

JEBON CORPORATION

Unit 709, Poongsan Factoria Town,

1141-2, Baegsok-Dong, Ilsan-District,

Koyangcity, Kyonggi-Do, 411-360, Korea

Tel: +82-31-902-9161 (12 lines)

Fax: +82-31-902-7775/7776

Web site: http://www.jebon.com

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PM9110BF

Item

Description

Symbol

PM9110BFE

PM9110BFA

115V

Detail

230V

200kΩ

180kΩ

200kΩ

180kΩ

200kΩ

180kΩ

5

6

7

8

9

R1A

R1B

R2A

R2B

R3A

R3B

120kΩ

82kΩ

120kΩ

82kΩ

120kΩ

82kΩ

10

ORDERING INFORMATION

Part Number

Description

PM9110BFA

PM9110BFE

3 X 115V, 3 X 80A Module

3 X 230V, 3 X 80A Module

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PM9110BF

Notes:

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PM9110BF

Disclaimer:

TheinformationcontainedinthisdocumentisconfidentialandproprietarytoSouthAfricanMicro-

Electronic Systems (Pty) Ltd ("SAMES") and may not be copied or disclosed to a third party, in whole or in part,

without the express written consent of SAMES. The information contained herein is current as of the date of

publication; however,deliveryofthisdocumentshallnotunderanycircumstancescreateanyimplicationthat the

informationcontainedhereiniscorrectasofanytimesubsequenttosuchdate. SAMESdoesnotundertaketoinform

anyrecipientofthisdocumentofanychangesintheinformationcontainedherein,andSAMESexpresslyreserves

therighttomakechangesinsuchinformation,withoutnotification,evenifsuchchangeswouldrenderinformation

containedhereininaccurateorincomplete. SAMESmakesnorepresentationorwarrantythatanycircuitdesigned

byreferencetotheinformationcontainedherein, willfunctionwithouterrorsandasintendedbythedesigner.

Any Sales or technical questions may be posted to our e-mail address below:

energy@sames.co.za

For the latest updates on datasheets, please visit out web site:

http://www.sames.co.za

South African Micro-Electronic Systems (Pty) Ltd

P O Box 15888,

Lynn East, 0039

Republic of South Africa,

33 Eland Street,

Koedoespoort Industrial Area,

Pretoria,

Republic of South Africa

Tel:

Fax:

012 333-6021

012 333-8071

Tel:

Fax:

Int +27 12 333-6021

Int +27 12 333-8071

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型号：	PM9110BFE
厂家：	SAMES
描述：	MONOCHIP THREE PHASE BIDIRECTIONAL KILOWATT HOUR METERING MODULE MONOCHIP三相双向千瓦时计量模块
文件：	总14页 (文件大小：165K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PM9110BFE [SAMES]

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