isoNAV685-D_D00215_02_M_XXEN/04.2017
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Commissioning
7. Commissioning
7.1 General initial commissioning process
1. Check that the ISOMETER® is properly connected to the system to be monitored.
2. Connect the supply voltage to the ISOMETER®. Adjust the device using the commis-
sioning wizard. Afterwards, the ISOMETER® performs a self test in four steps. The
alarm relays are not checked during this test. After completion of the test, the meas-
ured insulation resistance is shown on the display. If the value exceeds the response
values indicated in the lowest line of the display, the message "OK" will additionally
be displayed.
3. Check the ISOMETER® in the system being monitored, e.g. using a suitable resistance
to earth.
After setting the response value
R
an
and the DC offset voltage, the device starts a self-test,
makes the first measurement and outputs the measured insulation resistance values of
the IT system being monitored, then commissioning is completed.
For customer-specific configured devices, the commissioning wizard
might be deactivated and cannot be run. In this case, the device is preset.
However, the commissioning wizard can be started as described at
Observe device status!
The device is in an alarm state until initial commissioning has been
completed.
Commissioning flow chart
Commissioning the ISOMETER®
Adjust basic settings if
necessary
Install the device according to the
wiring diagram
and documentation
Connect the supply voltage
Connect the system voltage
The ISOMETER® performs a self
test
Function test with a suitable
resistance between system and
earth. Resistance value: 50% of
the response value Alarm 2
Remove the resistance
The ISOMETER® is properly
connected and
functions reliably
Run the commissioning
wizard
For further information regarding de-
vice settings, refer to chapter