MCP3909RD-3PH1 Microchip Technology, MCP3909RD-3PH1 Datasheet - Page 56

• Manufacturer Part Number: MCP3909RD-3PH1
• Description: REF DESIGN MCP3909 3PH ENGY MTR
• Manufacturer: Microchip Technology

Specifications of MCP3909RD-3PH1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: No
• Utilized Ic / Part: MCP3909, PIC18F2520, PIC18F4550
• Primary Attributes: 3-Ph, 220 VAC, In Case, LCD, USB, GUI
• Secondary Attributes: Opto-Isolated Interface for Safety
• Operating Voltage: 220 V
• Operating Current: 5 A
• Description/function: Energy Meter
• For Use With/related Products: MCP3909
• Lead Free Status / RoHS Status: Not applicable / Not applicable

MCP3909 3-Phase Energy Meter Reference Design
5.3.10
FIGURE 5-7:
DS51643B-page 52
Flow Chart for RMS Calibration
Flow Chart for RMS Calibration.
Put meter in Calibration
IR2 and VR2 in equation
Set MODE1 register bits
Phy_I_RMS_RAW2 and
and LINE_CYC register
registers (referred to as
Configuration C4 (V
PHy_V_RMS_GLSB,
and 1/10 I
Phy_V_RMS_RAW2
Configuration C1
PHy_I_RMS_GLSB,
Fetch values from
PHy_V_RMS_OFF,
PHy_I_RMS_OFF,
calibration register
Calculate & Write
Read contents of
contents based
Section 5.3.11
Calibration
End of This
CAL_MODE
equations in
bit 1 low?
Phase
set)
Is
B
YES
at PF=1)
B
NO
© 2008 Microchip Technology Inc.