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isoxx1685Dx-x25_D00272_07_M_XXEN/09.2022
8.2 (1.6.1.2) t(on)
The response time t(on) after a switch-on signal can be set between 100 milliseconds and 5 mi-
nutes.
8.2 (1.6.1.3) t(off)
The response time t(off) after a switch-off signal can be set between 100 milliseconds and 5
minutes.
8.2 (1.6.1.4) Function
The parameters for the function of the digital inputs of the ISOMETER® can be set differently:
8.2 (1.6.2) Digital 2
See chapter 8.2 (1.6.1) "Digital 1”.
•off Digital input without function
•TEST Device self test
•RESET Reset of fault and alarm messages
•Deactivating the device The device DOES NOT measure the insulation resistance, the
message
Device inactive appears on the display. The
IT system is NOT being monitored!
The device disconnects itself from the system to be monito-
red through an internal system isolating switch.
•Start initial measu-
rement
Starting a new measurement.
All recorded measurements are discarded
•Insulation fault loca-
tion
(isoxx1685DP only)
The insulation fault location is started.
For this purpose, the digital input must be active.
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