STEVAL-IPE012V1 STMicroelectronics, STEVAL-IPE012V1 Datasheet - Page 14

• Manufacturer Part Number: STEVAL-IPE012V1
• Description: EVAL BOARD ENERGY METER
• Manufacturer: STMicroelectronics
• Series: -r

Specifications of STEVAL-IPE012V1

• Design Resources: STEVAL-IPE012V1 Schematic STEVAL-IPE012V1 BOM
• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: STPM10BTR, STM8L152
• Primary Attributes: Single Phase with 1 Current Transformer & Shunt
• Secondary Attributes: Tamper Detection
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11462

Single-phase energy meter features
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6.1
6.1.1
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Single-phase energy meter features
Auto-calibration mode
The STEVAL0-IPE012V1 demonstration board supports auto-calibration using an ideal
reference source for 10 A and 240 V. Calibration is performed to minimize measurement
errors and to increase the accuracy of the meter.
When using auto-calibration mode, calibration parameters CHV (one byte calibration data
for voltage channel), CHP (one byte calibration data for primary current channel), and CHS
(one byte calibration data for secondary current channel), are calculated and programmed in
registers of the metering IC. The procedure for meter calibration is explained below by firstly
giving an overview of the hardware setup, and then by describing how to connect a
calibration board.
Steps for auto-calibration
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Figure 5.
For more details of calibration parameters, refer to the STPM01 datasheet.
Connect 240 V voltage source to phase and neutral of board
Connect 10 A source to board
Push button SW3 for more than 4 sec
Board enters auto-calibration mode; “CALIB ON” is displayed on the board
Once calibration is complete, the board returns to auto-scroll display mode.
Auto-calibration mode connection diagram
Doc ID 17778 Rev 1
UM0981