Siemens TIASTAR Руководство по эксплуатации - Страница 38
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6 Troubleshooting
Hazardous voltage.
Will cause death or serious per-
sonal injury.
Disconnect power before working
on this equipment
In the unlikely event that operating problems are encoun-
tered, use the following troubleshooting chart to isolate the
cause of the problem and find the remedy. If the corrective
action given in the chart fails to correct the difficulty, consult
your field sales representative.
Problem
Doors will not close or
out of alignment.
Contactor will not close.
Contactor chatter or hum.
Contacts overheating.
* Not supplied on all starters.
38
.
Probable Cause
Enclosure is not bolted down tightly
on perfectly level surface.
Enclosure sprung out of shape.
Door hinges not properly adjusted
Control circuit or power fuse blown
or circuit breaker tripped.
Incoming power line not energized.
Magnet coil defective.
*Interposing relay defective.
Control power transformer defective.
Overload relay tripped or defective.
Missing jumper, loose connections,
remote connections, etc.
Loose connection in control circuit.
*Defective interposing relay.
Defective coil.
Low control voltage.
Corroded or dirty magnet pole faces.
Loose connections.
Contacts not mating firmly.
Contact tip eroded.
The following information is required if it is necessary to write
Siemens Controls relative to the equipment problem.
1. Manufacturer.s order number and part number, if available.
2. Nameplate data on contactor or controller.
3. Duty cycle and any details of operation.
4. Length of time in service and approximate total number of
operations.
5. Voltage, current, and frequency.
6. Description of any problem.
7. Any other pertinent information, such as drawing, layout,
and schematic number.
Corrective Action
Using level, add shims as necessary are and tight-
en anchoring bolts.
Straighten or repair enclosure. Remove door hinges.
Add or subtract shims as necessary.
Inspect fuses, replace if blown. Reset circuit breaker.
Close feeder circuit breakers or tie switch.
Check magnet operation, replace coil as necessary.
Check and replace if defective.
Check and replace if necessary.
Check and replace if necessary.
Check wiring diagram carefully to make sure that
all external or alternate connections have been
made satisfactorily. This is especially true where
remote protective or control devices are used.
Tighten connections in control circuit.
Check relay, replace if necessary.
Check main coil, replace if necessary.
Check line voltage.
Clean or replace magnet assembly.
Tighten connections.
Check for weak or deformed contact spring,
replace if necessary.
Replace contacts.
Siemens Energy & Automation, Inc.