Wiring Connections - ICPDAS ET-2268 CR User Manual

ET-2200 Series Ethernet I/O Modules
2.3

Wiring Connections

The user can find out the Wire Connections diagram for each model in the data sheet on the
website.
Note for the ET-2260/2261/2261-16/2268:
When inductive loads are connected to the relays, a large counter-electromotive force may occur
when the relay actuates because of the energy stored in the load. These flyback voltages can severely
damage the relay contacts and greatly shorten the relay life. To achieve circuit protection and control
flyback voltages in your inductive load, install a flyback diode for DC loads or a metal oxide varistor
for AC loads.
Varistor Selection:
Operating Voltage
100 ~ 120 V
AC
200 ~ 240 V
AC
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Varistor Voltage
240 ~ 270 V
AC
440 ~ 470 V
AC
Max. Peak Current
> 1000 A
> 1000 A
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