Ready" Signalling; Truck Locking Magnet (Compulsory Device) - ABB VM1 Installation And Service Instructions Manual

7.7. "READY" signalling

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 . If the luminous "READY" signal is off or flashing,
please refer to the table below to find the cause.
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: open
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
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7.8. 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.
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).
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: closed
Not Ready contact: closed
Ready signal: off
Ready contact: open
Not Ready contact: closed
Circuit-breaker open
Ready signal: off
Ready contact: open
Not Ready contact: closed
Ready signal: off
Ready contact: open
Not Ready contact: closed
Capacity of the capacitor/s
Sufficient energy for an O.C.O cycle
Sufficient energy for an C-O cycle
Sufficient energy for one opening
Sufficient energy for one opening
State of the coils
No continuity in the closing coil
No continuity in the closing coil