Schneider Electric iEM3300, iEM3200, iEM3100 Power factor register format, PF value, PF register

Power, energy and power factor iEM3100 / iEM3200 / iEM3300 series user manual

Power factor register format

Each power factor value (PF value) occupies one floating point register for power factor (PF register). The meter performs a simple algorithm to the PF value then stores it in the PF register. The meter and software interpret the PF register for all reporting or data entry fields according to the following diagram:

0

-1

PF value

-0.5+0.5

Quadrant 2	Quadrant 1
-1 ” PF ” 0	0 ” PF ” +1

+1

	Quadrant 3			Quadrant 4
	-1 ” PF ” 0			0 ” PF ” +1
-0.5					+0.5
			0
0 to -1		-1 to 0		0 to +1	+1 to 0

0	-1	0	+1	0
Quadrant 3	Quadrant 2		Quadrant 1	Quadrant 4
-2	-1	0	+1	+2

PF register

-2 to -1

-1 to 0

0 to +1

+1 to +2

0	0
-0.5	+0.5
Quadrant 2	Quadrant 1
-1 ” PF register ” 0	0 ” PF register ” +1

-1 +1

Quadrant 3	Quadrant 4
-2 ” PF register ” -1	+1 ” PF register ” +2
-1.5	+1.5
-2	+2

108 DOCA0005EN-04