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Operation
Checklist
Check the unlatching. If manual unlatching (emergency-stop) via the push
rod or draw bar is not available, the shunt release (-Y1) can be manually
actuated in a de-energised state and for test purposes (see Fig. 11 on
p. 18).
Test the electric switching repeatedly before the vacuum contactor is put
into operation in the network.
Incident
Vacuum contactor does not
respond
Closing is blocked
Failure of the supply voltage
U
a
Defective shunt release
Vacuum contactor does not
return to the starting position
or the initial state
Vacuum contactor does not
latch
Manual unlatching is blocked
38
WARNING
Do not commission the vacuum contactor if there are malfunctions.
If the malfunctions or damage cannot be remedied, contact a sales representative
or Siemens Service and, if necessary, send back the vacuum contactor in the
original packaging.
Troubleshooting
Troubleshooting
•
Check the DIP switch S2 position and reset if necessary (see matrix Fig. 50).
•
Return to the manufacturer
•
Check that the plugs on the electronic controller are firmly seated.
•
Check the cable connection to the plugs.
•
If a new vacuum contactor is installed, use only the connectors provided in
the accessory pack (see p. 31).
•
Order a spare part and mount according to the supplied instructions.
•
Inspect the contact welding and remedy by means of no-load switchings.
•
For existing closing latching, actuate the manual unlatching (no-load switch-
ing permissible).
•
Return to the manufacturer
•
Check that the unlatching mechanism is attached to the coupling point and
reattach with max. 4 Nm. While doing so, prevent the threaded rod from twist-
ing.
1)
Complete vacuum contactor
First closing operation
If all functions have been checked and are OK, switch on the high voltage while ob-
serving all of the safety regulations and operational requirements.
1)
.
1)
.
Notes
9229 0106 176 0-
2020-09-18
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