Superior Electric SLO-SYN SS2000MD4M-O, Руководство по установке

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SS2000MD4M-O Page 29
APPENDIX A:
TROUBLESHOOTING ELECTRICAL
INTERFERENCE PROBLEMS
Electrical interference problems are common with today’s computer -
based controls, and such problems are often difficult to diagnose and
cure. If such a problem occurs with your system, the following checks
should be made to locate the cause of the problem.
1. Check the quality of the ac line voltage using an oscilloscope and a
line monitor, such as the Superior Electric VMS series. If line voltage
problems exist, use appropriate line conditioning, such as line filters
or isolation transformers.
2. Be certain proper wiring practices are followed for location, groun-
ding, wiring and relay suppression. It is highly suggested that
twisted-pair cables be used for all signal inputs and motor wiring.
3. Double check the grounding connections to be sure they are good
electrical connections and are as short and direct as possible.
4. Try operating the unit with all suspected noise sources switched off.
If the unit functions properly, switch the noise sources on again, one
at a time, and isolate which ones are causing the interference prob-
lems. When a noise source is located, try rerouting wiring, sup-
pressing relays or other measures to eliminate the problem.