User Manual Section 5
GFK-2958L May 2021
Detailed Description of I/O Modules 367
5.34 Power Measurement Module EP-1813
Figure 201: Power Measurement Module EP-1813
The power measurement module EP-1813 can measure and process all relevant
measurands of one or three phase current consumers (up to 500 V AC phase-to-phase
voltage):
–– Current (RMS/average/peak)
–– Voltage (RMS/average)
–– Reactive, apparent and active power
–– Power consumption
–– Power factor
–– Frequency
–– Voltage upper and lower alarm
–– Current upper and lower alarm
Currents up to 5 A can be measured directly with the module. Due to the measuring in the
phase conductor the current can be measured in a star as well as a delta connection without
further external components. The raw measured values are transferred via the connected
fieldbus to a superior PLC or a control system.
The module delivers data to the fieldbus via eight data channels (16 bit each). The data are
updated within one millisecond from the module to the adapter. The content of each data
channel can be chosen from 55 registers (currents, voltage, power factor, frequency as well
as power and energy measuring). Additionally, limits can be parameterized the exceeding
of which will trigger process alarms.
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