Install the insulation fault locator
and the appropriate CTs
Connect the RS-485 interface
(BMS bus) of the EDS with the
iso1685DP
Make sure that the system is
disconnected from any electrical
source before connecting the device!
Adress all BMS components.
Set adress 1 for the 1685DP
(Master)
Connect supply voltage
Connect system voltage
iso1685DP successfully
carries out a self test
Function test with a suitable
resistance between system and
earth. Value: 50% of the response
value Ran2
Alarm LEDs activated?
Alarm relays switched?
yes
no
Set the EDS mode of the iso1685DP
to „auto“ via the BMS bus or the display
Press the test button of the EDS
Is the faulty subcircuit being
recognised correctly?
yes
Shall other connected
CTs be tested?
Are all CTs recognised correctly
by the EDS
no
Check the CT wiring
yes
no
yes
Remove the resistance and select
another location downstream a
measuring transformer where the
insulation fault is to be simulated.
LED "PGH on" of the iso1685DP
is flashing. Insulation fault
location is activated
Shall the factory setting be
retained?
yes
no
Change the settings in the EDS device
menu, change the EDS parameters of the
iso1685DP
yes
no
Connection or device error:
check connections
yes
Remove the resistor
Alarm LEDs extinguished?
Alarm relays switched?
Delete alarm messages:
Press reset button at the EDS or
call up the EDS reset in
the EDS menu
no
no
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