WAGO-I/O-SYSTEM 750 XTR
Appendix 301
750-495/040-00x 3-Phase Power Measurement Module 690 V
Manual
Version 1.2.0
Table 120: Parameter 43
Parameter 43 – Extended User Settings
Function
Data Type Access
Factory Setting
Extended user settings
UINT
RW
0x0000
0 … 1:
ID of the Rogowski coils (supported by firmware versions 03 and above)
This module setting is active if the ID of the Rogowski coils in register 32, bit 4 and bit 5
is set to the value 2.
0: RC70 (factory setting)
1: RC125
2: RC175
3: not used
4
Scaling of the voltage transformer (supported by firmware versions 05 and above)
0: 0.1 V / LSB (factory setting)
1: 1.0 V / LSB
5 … 6
Measurement topology (supported by firmware versions 05 and above)
0: 4-Wire Wye (factory setting)
1: 3-Wire Wye/Delta
2: 4-Wire Wye, 2-Phase
3: Artificial Star Point
Table 121: Parameter 44/45 (Supported by Firmware Versions 05 and above)
Parameter 44/45 – Factor for Rogowski Coils
Function
Data Type Access
Factory Setting
Factor for Rogowski coils
UINT
RW
0x4B189680
(dec.10.0E6)
0 … 15: This module setting is active if the ID of the Rogowski coils in register 32, bit 4 and bit 5
is set to the value 3.
The RC factor is interpreted as a 4-byte module setting in the IEEE754 format.
The factor is calculated according to the following formula:
𝑹𝑹𝑹𝑹
𝑭𝑭𝑭𝑭𝑭𝑭𝑭𝑭𝑭𝑭𝑭𝑭
=
𝟏𝟏
𝑴𝑴
𝑹𝑹𝑹𝑹
×
22000
Ω
+
𝑹𝑹
𝑹𝑹𝑹𝑹
22000
Ω
R
RC
: Internal resistance of the Rogowski coils in ohms [Ω]
M
RC
: Transfer coefficient of the Rogowski coils in henries [H]
Parameter 44: Low word: 0x9680 (factory setting)
Parameter 45: High word: 0x4B18 (factory setting)
Table 122: Parameter 44 (Supported by Firmware Versions 05 and above)
Parameter 44 R
RC
– Internal Resistance R
RC
of the Rogowski Coils
Function
Data Type Access
Factory Setting
Internal Resistance R
RC
of the Rogowski
Coils
UINT
RW
0x1770 (dec.6000)
0 … 15: 0…65535: Internal resistance with a resolution of 0.01
Ω / LSB
6000:
60.00
Ω (factory setting)