WAGO SYSTEM 750 - Page 43

WAGO-I/O-SYSTEM 750 Function Description 43
750-493 3-Phase Power Measurement Module
Manual
Version 1.2.0
B. User Scaling ON, Measurement with Current Transformer
Current
750-493
750-493/000-001
Register 32, bit 0
1
1
Register 37 (D-CTR)
0x002D (45)
0x0028 (40)
Process value
0x96A1 (38561)
0x60FB (24827)
Scaling factor PI
0.001 A / LSB
0.005 A / LSB
Equation
Measured value = Process value x Scaling factor PI
Measured value
38.561 A
124.135 A
Active Power
750-493
750-493/000-001
Register 32, bit 0
1
1
Register 37 (D-CTR)
0x002D (45)
0x0028 (40)
Process value
0x22A5 (8869)
0x1648 (5704)
Scaling factor PI
0.1 W / LSB
0.5 W / LSB
Equation
Measured value = Process value x Scaling factor PI
Measured value
886.9 W
2852.0 W
Active Energy
750-493
750-493/000-001
Register 32, bit 0
1
1
Register 37 (D-CTR)
0x002D (45)
0x0028 (40)
Register 35*
2
4
Process value
0x0D86 (3462)
0x2CA3 (11427)
Scaling factor PI
0.1 Wh / LSB
50 Wh / LSB
Equation
Measured value = Process value x Scaling factor PI
Measured value
346.2 Wh
571350 Wh
* Register 35: Setting in the register defines the scaling factor PI for energy values
C. User Scaling OFF, Measurement with Current Transformer 500:1 A
(1A Variants) and 500:5 A (5A Variants)
D-CTR values of 500 or 100 must be taken into account externally when user
scaling is OFF, i.e. the transferred measured value must be multiplied by 500 or
100 in the high-level PLC.
Current
750-493
750-493/000-001
Register 32, bit 0
0
0
Register 37 (D-CTR)
0x0001 (1)
0x0001 (1)
Process value
0x01A9 (425)
0x033D (829)
Scaling factor PI
0.001 A / LSB
0.005 A / LSB
Equation
Measured value = Process value x Scaling factor PI
x D-CTR
Measured value
212.5 A
414.5 A
Note: Resolution of the current values in 500mA steps