ST STEVAL-IPE007V1 Bedienungsanleitung

April 2006 Rev 2 1/14

UM0221

User manual

STEVAL-IPE007V1: Single-phase energy meter

with tamper detection based on ST7lite2x

Introduction

This user manual provides a description of a single chip energy meter, STEVAL-IPE007V1,

with tamper detection. The meter fulfills IEC 61036:1996 + A1:2000 static meter

requirements for active energy (classes 1 and 2) with Ib=10A and Imax=50A. It detects

signals from a few mA, and continues to measure accurately even under tamper conditions.

The bill of materials and board schematics are also provided in Appendix A and Appendix B.

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Contents UM0221

2/14

Contents

1 Hardware overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Appendix A Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Appendix B Board schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

UM0221 Hardware overview

3/14

1 Hardware overview

The following figure shows both the external parts and the main layout of the components

across the board.

Figure 1. Energy meter

The parts are numbered as follows:

1. Current transformer

2. Power supply

3. LCD module

4. Analog switch

5. EEPROM

6. ST7Flite20 microcontroller

7. Operation Amplifier

8. Real time clock (RTC)

9. RTC Battery

The connection diagram is shown in Figure 2. It shows two current transformers, the LCD

display and the three LED’s used.

45679

Hardware overview UM0221

4/14

Figure 2. Connection diagram of meter

The AC supply is connected to the power supply section of the energy meter. The power

LED glows when the supply is on.

There are two current transformers to measure current in phase and neutral wires

respectively.

The LCD module provides information about the kWh energy consumed, the input supply

voltage, the input current, the power factor as well as the current date and time.

The tamper LED glows if the meter is tampered.

Finally, there is a pulse count LED which glows with a frequency proportional to the

measured power. The proportionality constant can be set by the user.

LCD

CTP

Transformer Phase

Tamper

LED

Pulse

Count LED

Power

LED

Load

Transformer Neutral

CTN

Current

Phase

Mains

Current

Neutral

Red wire

Black wire

Red wire

CTN

JP1

UM0221 Revision history

5/14

2 Revision history

Table 1. Document revision history

Date Revision Changes

07-Apr-2006 1 Initial release.

25-Apr-2006 2 Document watermark removed

Bill of materials UM0221

6/14

Appendix A Bill of materials

Table 2. Capacitors

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1Ceramic

C5,C6,C7

,C8,C9,C

10,C11,C

.1UF 50V NA SMD 8

2 Electrolytic C3 1000uF 25V NA -55°C to

+85°C Leaded 1

3 Ceramic C18,C19 22nF 50V NA NA SMD 2

4Ceramic

C14,C15,

C16,C17 22pF 50V NA NA SMD 4

5 Box C1 1uF 400V NA NA Leaded 1

6 Box C4 10nF 400V NA NA Leaded 1

7 Electrolytic C2 100uF 25V NA -55°C to

+85°C Leaded 1

8 Ceramic C13 10nF 50V NA NA SMD 1

8 Ceramic C20 NA NA SMD 1

Table 3. Resistors

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1R1 82E 2W

-55°C to

+125°C Leaded 1

2 R4 150K 1/8W -55°C to

+125°C SMD 1

3 R2,R3 10K 1/8W -55°C to

+125°C SMD 2

4 R5 110K 1/8W -55°C to

+125°C SMD 2

5 R6 330K 1/8W -55°C to

+125°C SMD 2

5 R8 470E 1/8W -55°C to

+125°C SMD 1

6 R9 470E 1/8W -55°C to

+125°C SMD 1

7 R7 220E 1/8W -55°C to

+125°C SMD 1

8 R10 1.5K 1/8W -55°C to

+125°C SMD 1

UM0221 Bill of materials

7/14

9 R11 51K 1/8W -55°C to

+125°C SMD 1

10 R12 16K 1/8W -55°C to

+125°C SMD 1

11 R13 0 1/8W -55°C to

+125°C SMD 1

12 R14 390E 1/8W -55°C to

+125°C SMD 1

13 R15 220E 1/8W -55°C to

+125°C SMD 1

14 R16 390E 1/8W -55°C to

+125°C SMD 1

15 R17 180E 1/8W -55°C to

+125°C SMD 2

15 R31 220E 1/8W -55°C to

+125°C SMD 2

16 R18 51K 1/8W -55°C to

+125°C SMD 1

17 R21 100K 1/8W -55°C to

+125°C SMD 1

18 R19,R20 2.2K 1/8W -55°C to

+125°C SMD 2

19 R22,R23 36E 1/8W -55°C to

+125°C SMD 2

20 R24,R25 1K 1/8W -55°C to

+125°C SMD 2

21 R26 1K 1/8W -55°C to

+125°C SMD 1

22 R28 1M 1/8W -55°C to

+125°C SMD 1

23 R29 100E 1/8W -55°C to

+125°C SMD 1

24 R27,R32 5.1K 1/8W -55°C to

+125°C SMD 2

Table 3. Resistors

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

Bill of materials UM0221

8/14

Table 4. Integrated circuits

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

Positive

voltage

regulator

U1 L78L05A

positive voltage

regulators

-40°C to

+125°C TO-92 1

2Op-Amp U2

TS1854AI

1.8V

input/output rail

to rail low

power

operational

amplifiers

-40°C to

+125°C SO14 1

3Micro

Controller U3 ST7FLIT

E20F2M

8-BIT MCU

with single

voltage flash

memory, data

EEPROM,

ADC, timers,

SPI

-40°C to

+85°C SO20 1

4 SL EEPROM U4 M95010-

WMN6E 1kb SPI Bus 2.5V to

5.5V NA -40°C to

+85°C SO8 1

5Analog

Switch U5 HCF4066

M013TR

QUAD

BILATERAL

SWITCH

3V to 20V NA -55°C to

+125°C SOP14 1

6SerialRTC U6 M41T94

MQ6E

512 Bit (64 bit

x8) Serial RTC

(SPI) SRAM

2.7V to

5.5V NA -55°C to

+125°C SOP14 1

7 LCD Module LCD GDM093 18x4 module 1

Table 5. Diodes

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1Rectifier

Diode

D1,D2,D3

,D4 1N4007 NA

1000V

(Reverse

Voltage)

NA -65°C to

+175°C

Leaded,

DO-41 4

2 LED D5,D6,D7 LED 3mm NA NA NA NA Red LED

3mm 3

3 Zener diode ZD1 9.1V 1/2 W 1

4 Transistor Q1,Q2 BC547B

NPN Epitaxial

Silicon

Transistor

TO-92 2

5 Transistor

Q3 (Very

fast

switching

transistor)

PN2222A

NPN General

Purpose

Amplifier

TO-92 1

UM0221 Bill of materials

9/14

Table 6. Metal oxide varistors

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1 MOV MV1 400V 1

Table 7. Trim pot

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1 TRIM POT R30 20K NA

Rectangu

lar,multitu

rn Trim

Pot

Table 8. Transformers and inductors

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1Current

Transformer

5000 turns,

10/40 amp by

Genius

Electricals

Table 9. Crystals

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1 Crystal Y1 KDS6J 16MHz NA NA 1

2 Crystal Y2 32.768kHz NA NA 1

Table 10. Ferrite beads

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1Inductor

Chip Beads L1 220uH NA NA -40°C to

+125°C Leaded 1

2Inductor

Chip Beads L2 1uH NA NA -40°C to

+125°C Leaded 1

Table 11. PCB

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1PCB 92x62

mm 1

Bill of materials UM0221

10/14

Table 12. Switches

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

Press

button

Switch

(Size

6.1mm x

6.1 mm)

S1 1

Table 13. ICP connector

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1ICP

connector CON10A 1

Table 14. Rechargeable battery

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

1 Battery BT1 1

Table 15. Terminal

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

14-pin

terminal 60A,500V 1

Table 16. Bug stick, jumpers and wires

Item # Desc. Ref. Part # Value Voltage Rating Temp.

Range

Pack /

Type Qnt

115 pin

Bugstick 1

29 pin female

bog stick 1

31Jumper 1

4 Wires 60A,500V

5Red black

wire 1A, 500V

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