Service And Maintenance; Fault Rectification; Fault States And Fault Detection On The 3Kc4 Transfer Switching Equipment - Siemens SENTRON Manual

Service and maintenance

10.1

Fault rectification

The following content is described in this chapter:
● Fault states and fault detection on the 3KC4 transfer switching equipment
● Fault states and fault detection on the 3KC8 transfer switching equipment
10.1.1

Fault states and fault detection on the 3KC4 transfer switching equipment

Fault state
The transfer switching equipment does not transfer automat-
ically.
The transfer switching equipment cannot be operated with
the handle.
The electrical commands I (ON) – O (OFF) – II (ON) are not
followed.
Manual, 08/2017, L1V30368969104A-02
Procedure for fault rectification
Check whether the power supply inputs of terminals 301
•
and 302 (208 to 277 V AC ± 20 %) are connected.
Check whether the switch is in the "Auto" position.
•
Check whether contacts 313 and 317 are opened.
•
Check whether contacts 312 and 317 are closed.
•
Check whether the "Power" LED shows a green light
•
and the warning LED has gone out.
Check product availability via the closed contacts 63A
•
and 64A.
Check whether the switch is in the "Manual" position.
•
Check whether the product is not padlocked.
•
Check the direction of movement of the handle.
•
Try to turn the handle in the direction described on the
•
handle with appropriate force.
Check the selected control logic (impulse / continuous
•
operation logic).
Check the cabling of the plug-in connections.
•
Check whether contacts 312 and 317 are closed.
•
Check whether contacts 313 and 317 are opened.
•
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