5
Commissioning
In order to check the proper
connection, it is recommended
to carry out a functional test
by connecting an appropriate
resistance between the system
to be monitored and earth.
Value of the resistance:
50% of the lowest selected
response value Alarm2.
Check the connections with a
voltmeter!
Is system voltage Un applied to the
terminals L1/L2?
If a coupling device is connected,
is it properly connected?
Check the voltage with a voltmeter!
yes
yes
Remove the resistance!
The IRDH375 is properly
connected and in
service condition!
Do both alarm LEDs light?
Did the output relays trip?
yes
no
Do both alarm LEDs light?
Did the output relays trip?
Are the alarm LEDs
extinguished?
Did the output relays reset?
no
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