Operation
EP1957-0022 and EP1957-2222 29Version: 2.0.0
Fig.14: PinOut safe output
M12 connection (numbered in red) Contact Channel Signal
1 1 - not connected
2 not connected
3 1 GND Up
4 Output 1
5 - Functional earth FE
2 1 - not connected
2 not connected
3 2 GND Up
4 Output 2
5 - Functional earth FE
3 1 - not connected
2 not connected
3 3 GND Up
4 Output 3
5 - Functional earth FE
4 1 - not connected
2 not connected
3 4 GND Up
4 Output 4
5 - Functional earth FE
Functional earth
The functional earth on pin 5 of the M12 connections of the outputs is internally connected to the
grounding lugs of the EtherCAT Box.
5.2.2.8 Overvoltage protection
If protection against overvoltage is necessary in your system, provide a protective circuit (surge filter) against
overvoltage for the power supply to the EtherCAT Box.
5.2.3 Temperature measurement
The temperature measurement of the EP boxes consists of a single box which is wired with corresponding
supply and communication lines. The inputs and/or outputs of the EP Box are switched on for the test.
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