Function
17
isoEV425_D00126_09_M_XXEN/03.2019
3.2.3 Self test/error codes
The integrated self test function checks the function of the insulation moni-
toring device, and connection monitoring checks the connections to the sys-
tem to be monitored. The alarm relays are not switched during the self test.
This can be changed using the parameter "test" in the alarm assignment
(menu "out", Chapter 5.4.2). During the test, the display indicates "tES".
When malfunctions are detected or connections are missing, the LEDs "ON"/
"AL1"/"AL2" flash. The respective error codes (E.xx) will be indicated on the dis-
play and the relay "K2" switches.
The relays can be assigned to a device error with the parameter "Err" in the
"out" menu in the alarm assignment.
Error codes
If, contrary to expectations, a device error should occur, error codes will ap-
pear on the display. Some of these are described below:
Error code Description
E.01
PE connection error
The connections "E" or "KE" to earth are interrupted.
Action:
Check connection, eliminate error. The error code will be
erased automatically once the error has been eliminated.
E.02
Connection fault system (L1/+ , L2/-),
The internal resistance of the system is too high, the con-
nection "L1/+" or "L2/-" to the system is interrupted or the
DC system being monitored has the wrong polarity at
U
n
> 50V.
Action:
Check connection, eliminate error. The error code will be
erased automatically once the error has been eliminated.
E.05
Measurement technique error/calibration invalid
For the current software version
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