1 Earth wire
2 Earth terminal connection
Fig. 51 Earth wire connection in terminal block
Do not forget earth wire.
The earth wire must be reconnected from the terminal block to
the cubicle earth stud.
9.6 Firmware Update
The firmware update process is described in [5]
9.7 Troubleshooting the Fusesaver Operator Control Panel
Trouble shooting options for CMR operator panels are described in [4] .
9.7.1 Fusesaver LEDs off - indicating No Data
Some LED indications on the Fusesaver Control Panel have a third state of No Data when both
LEDs are off. There are a number of reasons why a Panel Indication would have no data:
RCU Power up: On power up the RCU searches for Fusesavers, checks their configuration for
correct match and synchronises time to them. The RCU Switchgear OK LED will be flashing
during this time which may take up to 10 minutes to finish. During this time No Data will be
available.
RCU failed to find Fusesavers line: If the RCU fails to find a correctly configured Fusesaver line
then all phases will remain in the No Data state and the RCU Switchgear Problem LED will be
red.
Phase Not Present: If a Fusesaver line has less than 3 phases then the phase’s that are not
present will always have their LEDs in the No Data state. e.g. Fusesaver line only has B and C
phase then A phase will have No Data.
Communications Lost to a Fusesaver (e.g. Communications Module Removed). When
Communications to the Fusesavers are restored the RCU will verify the Fusesaver configuration
is still OK which can take up to 5 minutes for a single phase and during this time No Data will be
displayed for that Fusesaver.
9.7.2 No Control Source - Local
In order to carry out Fusesaver controls via the Control Panel the Control Source must indicate local
control is allowed. There are a number of reasons why the control source local would not be lit.
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