MCP3909RD-3PH1 Microchip Technology, MCP3909RD-3PH1 Datasheet - Page 49

• 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

© 2008 Microchip Technology Inc.
EQUATION 5-6:
EQUATION 5-7:
The calculation for PHy_VA_GLSB is identical except that it uses the PHy_VA_RAW
register instead of PHy_W_RAW:
EQUATION 5-8:
Note:
Note:
Convert to 16-bit signed integer for compatibility with 18F2520 register and
firmware calculations.
Convert to 16-bit signed integer for compatibility with 18F2520 register and
firmware calculations.
PHY_VA_GLSB
PLSB = Value from
PHY_W_GLSB
=
=
Table 6-3
------------------------------------------------------------ - 32768
⎛
⎝
------------------------------------------------------------ - 32768
⎛
⎝
------------------------------------------------------ -
64 LINE_CYC_NUM
------------------------------------------------------ -
64 LINE_CYC_NUM
•
•
PHY_W_RAW
PHY_VA_RAW
based on V
⎛
⎝
⎛
⎝
V
---------------- -
V
---------------- -
PLSB
PLSB
B
B
•
•
I
I
B
B
Meter Calibration
⎞
⎠
⎞
⎠
B
and I
⎞
⎠
MAX
⎞
⎠
•
•
values
DS51643B-page 45