Operation and setting
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IRDH575_D00089_05_M_XXEN/01.2020
6.4.3 Operating principle of the alarm relays
K1/K2 are factory set to N.O Test, that means N/O operation. When the supple-
ment "Test" has been selected, the alarm relays switch over during a manual
self test.
If, for any reason, the alarm relays may not switch over during a manual self
test, the settings N.C or N.O are to be selected.
K1: N.C Test = N/C operation contacts 11-12-14, with relay test
(the alarm relay is energized during normal operation)
K1: N.O Test = N/O operation contacts 11-12-14, with relay test
(the alarm relay is deenergized during normal operation)
K1: N.C = N/C operation contacts 11-12-14, without relay test
(the alarm relay is energized during normal operation)
K1: N.O = N/O operation contacts 11-12-14, without relay test
(the alarm relay is deenergized during normal operation)
K1: Flash = Flashing function contacts 11-12-14
(the alarm relay and the LED flash in the event of an alarm
message, approximately 0.5 Hz
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