ABB VM1 Installation And Service Instructions Manual page 16

VM1 - USER MANUAL
16
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7. Operation
7.1.5.
The luminous signal and relative "READY/NOT
READY" contacts signal:
• capacitor/s charged
• detection of the correct "CLOSED" and "OPEN"
positions by the position sensors
• watchdog (function only present on the FULL
OPTION control module).
If the luminous "READY" signal is off or flashing,
please refer to the table below to find the cause.
Note:
To carry out circuit breaker closing it is not sufficient for the
luminous READY signal to be lit and the relative contact
activated. It is indispensable to apply voltage to the logical
"-SL1": 24 ... 240 V d.c. / a.c. input (input for commanding
locking on closing; this function is the same as the one carried
out by the locking electromagnet in the mechanical operating
mechanism of the VD4 circuit breaker).
Meaning of the signals according to the charging state of the capacitor/s
Circuit breaker closed
Ready signal: lit
Ready contact: closed
Not Ready contact: open
Ready signal: flashing
Ready contact: closed
Not Ready contact: open
Ready signal: flashing
Ready contact: closed
Not Ready contact: open
Ready signal: off
Ready contact: open
Not Ready contact: closed
Meaning of the signals according to the state of continuity of the coils
Circuit breaker closed
Ready signal: flashing
Ready contact: closed
Not Ready contact: open
Ready signal: off
Ready contact: open
Not Ready contact: closed
"READY" signalling
Circuit breaker open
Ready signal: lit
Ready contact: closed
Not Ready contact: open
Ready signal: flashing
Ready contact: closed
Not Ready contact: open
Ready signal: off
Ready contact: open
Not Ready contact: closed
Ready signal off:
Ready contact: open
Not Ready contact: closed
Circuit breaker open
Ready signal: off
Ready contact: open in
Not Ready Contact: closed
Ready signal: off
Ready contact: open
Not Ready contact: closed
7.1.6. Truck locking magnet (compulsory device)
The locking magnet is inserted in withdrawable
circuit breakers with manual movement and
prevents traverse of the withdrawable truck when
there is no power supply voltage.
It is always provided since it is an integral part of
the safety interlock against racking-out with the
apparatus closed due to any possible fault
situation.
Capacity of the capacitor/s
Sufficient energy for an O-C-O cycle
Sufficient energy for a C-O cycle
Sufficient energy for one opening
Insufficient energy for opening
State of the coils
No continuity
the closing coil
No continuity
in the opening coil