Bender AGH420, Руководство пользователя

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Function
19 isoEV425_D00126_09_M_XXEN/03.2019
Manual self test
A self test is initiated by pressing the test button "T" for a period greater than
1.5 s. While pressing the internal test button, all display elements available for
this device are shown.
Connection monitoring
The connection monitoring, activated by the self test checks the connections
of terminals "E" and "KE" to the protective earth conductor (PE).
When an error is detected, the message device error (Err) will be signalled and
the error code "E.01" appears on the display.
The system connection monitoring is used to check the connections of termi-
nals "L1/+" and "L2/-" to the system to be monitored. When an interruption or
a high-resistance connection between L1/+ and L2/- is detected via the inter-
nal resistance of the system, the device error ("Err") will be signalled and the
error code "E.02" appears on the display. Since a test of the system connection
may take considerable time due to system disturbances or may even provide
incorrect results, the system connection monitoring can be disconnected us-
ing the parameter "nEt" in the "SEt" menu.
3.2.4 Malfunction
In addition to the self test described above, several functions in the insulation
monitoring device are continuously checked during operation. If a fault is de-
tected, the device error ("Err") will be signalled, the error code "E.xx" appears
on the display as an identifier for the error type xx and the LEDs "ON"/"AL1"/
"AL2" will flash.
If the error occurs again after restarting the device or after a reset to factory
settings, then contact Bender Service.
3.2.5 Signalling assignment of the alarm relays K1/K2
The messages "device error", "insulation fault", "insulation impedance fault",
"undervoltage/overvoltage fault", "device test" or "device start with alarm"
can be assigned to the alarm relays via the "out" menu. An insulation fault is
indicated by the messages "+R1", "-R1", "+R2" and "-R2". Messages "+R1" and
"+R2" indicate an insulation fault assigned to conductor L1/+, and the mes-