UM0221 User manual STEVAL-IPE007V1: Single-phase energy meter with tamper detection based on ST7lite2x Introduction

Transcription

1 UM0 User manual STEVL-IPE007V: Single-phase energy meter with tamper detection based on ST7litex Introduction This user manual provides a description of a single chip energy meter, STEVL-IPE007V, with tamper detection. The meter fulfills IE 606:996 + :000 static meter requirements for active energy (classes and ) with I b =0 and I max =50. It detects signals from a few m, and continues to measure accurately even under tamper conditions. The bill of materials and board schematics are also provided in ppendix and ppendix. pril 006 Rev /

2 ontents UM0 ontents Hardware overview Revision history ppendix ill of materials ppendix oard schematics /

3 UM0 Hardware overview Hardware overview The following figure shows both the external parts and the main layout of the components across the board. Figure. Energy meter The parts are numbered as follows:. urrent transformer. Power supply. L module. nalog switch 5. EEPROM 6. ST7Flite0 microcontroller 7. Operation mplifier 8. Real time clock (RT) 9. RT attery The connection diagram is shown in Figure. It shows two current transformers, the L display and the three LE s used. /

4 Hardware overview UM0 Figure. onnection diagram of meter Phase Neutral Mains urrent Transformer Neutral Red wire TN lack wire Load Power LE L TP lack wire Red wire Tamper LE Pulse ount LE urrent Transformer Phase JP The supply is connected to the power supply section of the energy meter. The power LE glows when the supply is on. There are two current transformers to measure current in phase and neutral wires respectively. The L 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 LE glows if the meter is tampered. Finally, there is a pulse count LE which glows with a frequency proportional to the measured power. The proportionality constant can be set by the user. /

5 UM0 Revision history Revision history Table. ocument revision history ate Revision hanges 07-pr-006 Initial release. 5-pr-006 ocument watermark removed 5/

6 ill of materials UM0 ppendix ill of materials Table. apacitors eramic 5,6,7,8,9, 0,,.UF 50V N SM 8 Electrolytic 000uF N +85 Leaded eramic 8,9 nf 50V N N SM eramic,5, 6,7 pf 50V N N SM 5 ox uf 00V N N Leaded 6 ox 0nF 00V N N Leaded 7 Electrolytic 00uF N +85 Leaded 8 eramic 0nF 50V N N SM 8 eramic 0 N N SM Table. Resistors R 8E W R 50K /8W R,R 0K /8W R5 0K /8W 5 R6 0K /8W 5 R8 70E /8W 6 R9 70E /8W 7 R7 0E /8W 8 R0.5K /8W Leaded SM SM SM SM SM SM SM SM 6/

7 UM0 ill of materials Table. Resistors 9 R 5K /8W 0 R 6K /8W R 0 /8W R 90E /8W R5 0E /8W R6 90E /8W 5 R7 80E /8W 5 R 0E /8W 6 R8 5K /8W 7 R 00K /8W 8 R9,R0.K /8W 9 R,R 6E /8W 0 R,R5 K /8W R6 K /8W R8 M /8W R9 00E /8W R7,R 5.K /8W SM SM SM SM SM SM SM SM SM SM SM SM SM SM SM SM SM 7/

8 ill of materials UM0 Table. Integrated circuits Positive voltage regulator U L78L05 Z positive voltage regulators -0 to +5 TO-9 Op- mp U TS85I.8V input/output rail to rail low power operational amplifiers -0 to +5 SO Micro ontroller U ST7FLIT E0FM 8-IT MU with single voltage flash memory, data EEPROM,, timers, SPI -0 to +85 SO0 SL EEPROM U 5 nalog Switch U5 6 Serial RT U6 M9500- WMN6E HF066 M0TR MT9 MQ6E kb SPI us QU ILTERL SWITH 5 it (6 bit x8) Serial RT (SPI) SRM. to 5. V to 0V.7V to 5. N N N -0 to SO8 SOP SOP 7 L Module L GM09 8x module Table 5. iodes Rectifier iode,,, N007 N 000V (Reverse Voltage) N -65 to +75 LE 5,6,7 LE mm N N N N Leaded, O- Red LE mm Zener diode Z 9.V / W Transistor Q,Q 57 5 Transistor Q (Very fast switching transistor) PN NPN Epitaxial Silicon Transistor NPN General Purpose mplifier TO-9 TO-9 8/

9 UM0 ill of materials Table 6. Metal oxide varistors MOV MV 00V Table 7. Trim pot TRIM POT R0 0K N Rectangu lar,multitu rn Trim Pot Table 8. Transformers and inductors urrent Transformer 5000 turns, 0/0 amp by Genius Electricals Table 9. rystals rystal Y KS6J 6MHz N N rystal Y.768kHz N N Table 0. Ferrite beads Inductor hip eads L 0uH N N -0 to +5 Leaded Inductor hip eads L uh N N -0 to +5 Leaded Table. P P 9x6 mm 9/

10 ill of materials UM0 Table. Switches Press button Switch (Size 6.mm x 6. mm) S Table. IP connector IP connector ON0 Table. Rechargeable battery attery T Table 5. Terminal -pin terminal 60,500V Table 6. ug stick, jumpers and wires 5 pin ugstick 9 pin female bog stick Jumper Wires 60,500V 5 Red black wire, 500V 0/

11 UM0 oard schematics ppendix oard schematics Figure. Schematic /6 9 00n OS Y J IP-PIN7 p 6MHz 5 p T-L IP-PIN6 U NS-L VSS V NRST OS/LKIN OS P0/LTI S SW-P 0.0u IN0 5 NSS/IN0/P0 SK/IN/P P/TI P/TPWM0 7 6 NWR-L NS-L JP JUMPER 6 7 MISO/IN/P MOSI/IN/P P/TPWM P/TPWM 5 T-L TRL-/ 8 LKIN/IN/P IT/TPWM/P5 IP-PIN SO IN-P IP-PIN9 9 0 IN5/P5 IN6/P6 ILK/MO/P6 P7 TRL-GIN6 IP-PIN ST7FLITE0 R9 k R0 k IN-P5 IN-P6 R8 50k NE-RT 6 F 7 TMP R 00k Q 58 SI SL Sshouldbe connectedtopin -6ofUandnottoPIN-7. U NS V Q NHOL NW VSS M950XX n Title Size Number Revision Orcad ate: 5-Jan-006 Sheet of File: Z:\ackup\eepu\P_esign\EMeter\EMeter.ddb rawn y: Figure. Schematic /6 URRENT-OUT R TN urrent Transformer R 6E K 8 nf U5 -IN/OUT V -OUT/IN TRL- -OUT/IN TRL- -IN/OUT -IN/OUT TRL- -OUT/IN TRL- -OUT/IN VSS -IN/OUT TRL-GIN6 IN-GIN6 OUT-GIN6 R5 HF066 TP urrent Transformer R 6E K 9 nf R 0k 00n R7 5.k Q PN. TRL-/ PHSE R8 M R0 0k R6 K IN0 0 N R9 00E NEUTRL R 0E 00n. Title Size Number Revision Orcad ate: -Nov-005 Sheet of File: Z:\ackup\eepu\P_esign\EMeter\EMeter.ddb rawn y: /

12 oard schematics UM0 Figure 5. Schematic /6 IN-P IN-P6 IN-GIN6.. R7 0E R8 70E R9 70E R0.5k R U 5k OUT OUT IN - IN - U- U- IN + IN + V V- U IN + IN +.ref 6 9 IN - IN OUT OUT. TS85 IN-P5 R 6k R 0E OUT-GIN6 R 90E. 8 00n URRENT-OUT R5 0E R7 80E R6 90E U- U-5 U- Title Size Number Revision Orcad ate: -Nov-005 Sheet of File: Z:\ackup\eepu\P_esign\EMeter\EMeter.ddb rawn y: Figure 6. Schematic /6 PHSE P-MINS L 0uH MV 00V L R 50k 5 LE R 50nF/00V 8E/W 0nF/00V R 0k Q 57 K K 00u/ K Z 9V K K 5 00nF 000u/ U L7805/TO0 I O 6 00nF G N-MINS uh NEUTRL R5 0k.ref R6 0k Title Size Number Revision Orcad ate: 5-Jan-006 Sheet of File: Z:\ackup\eepu\P_esign\EMeter\EMeter.ddb rawn y: /

13 UM0 oard schematics Figure 7. Schematic 5/6 IP-PIN7 IP-PIN9 J ON0 IP-PIN IP-PIN IP-PIN6 J GN ON J NS-L NWR-L T-L ON9 Title Size Number Revision Orcad ate: 6-Feb-006 Sheet of File: Z:\ackup\eepu\P_esign\EMeter\EMeter.ddb rawn y: Figure 8. Schematic 6/6 Y 6 p.768khz 7 p T.6V U6 XI V XO NE NRST NIRQ/FT/OUT WI THS NRSTIN SI NRSTIN SQW VT SL VSS SO MT R 7 00nF NE-RT 5k SI SL SO Title Size Number Revision Orcad ate: 5-Jan-006 Sheet of File: Z:\ackup\eepu\P_esign\EMeter\EMeter.ddb rawn y: /

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