WAGO SYSTEM 750 - 5 Function Description; Measuring Principle; Measured Values and Measured Value Calculation

WAGO-I/O-SYSTEM 750 Function Description 35
750-493 3-Phase Power Measurement Module
Manual
Version 1.2.0
Pos: 69 /Al l e Ser ien (Al lg emei ne M od ule)/Ü b ersc hrif te n für all e S eri en/F unk tio nsbes chr ei bung Fun ktio ns besc hr eibu ng - Über schri ft 1 @ 4\mod_1239025975389_21.docx @ 30003 @ 1 @ 1
5 Function Description
Pos: 70 /S eri e 750 (WAGO-I/O-SYST EM)/F unkt ions beschr eibu ng/Fu nktio nsbesc hrei bung 75 0-0493 @ 14\mod_1361260872587_21.docx @ 112240 @ 2222 @ 1
0493 @ 14\mod_1361260872587_21.docx @ 112240 @ 2222 @ 4
5.1 Measuring Principle
The 3-phase power measurement module operates using 6 analog/digital
converters for acquiring the current and voltage levels in all three phases. The 3
phases are connected to the current measuring channels of the I/O module in
"single-ended" measurement topology. Each of the 6 measurement inputs is
scanned at a frequency of 8 kHz. The input filters on the measuring channels have
a limit frequency of 7.2 kHz. The analog measured values are quantized with 24
bits and further processed digitally.
Acquisition and processing of the measured values of all three phases is
performed simultaneously in the very same way.
5.2 Measured Values and Measured Value Calculation
The 3-phase power measurement module makes the following AC measured
values available per phase (Lx = L1, L2 or L3):
Voltage:
• RMS value voltage Lx – N
• Maximum RMS value voltage Lx – N
• Minimum RMS value voltage Lx – N
Current:
• RMS value current Lx
• Maximum RMS value current Lx
• Minimum RMS value current Lx
Power:
• Active power Lx
• Maximum value active power Lx
• Minimum value active power Lx
Energy:
• Active energy Lx
Frequency:
• Supply network frequency Lx
Power factor:
• cos phi Lx
Limit value:
• Undervoltage Lx: Threshold value undershot
Alternatively, the following DC measured values are available if DC
measurement has been activated in the I/O module. See section "Commissioning"
> "Configuration with WAGO-I/O-CHECK".
Voltage:
• DC voltage Lx – N
Current:
• DC current Lx
Power:
• Power (DC current) Lx