Siemens MJ-5, Инструкция по установке и эксплуатации

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8 MJ-5 Control Panel Basic Troubleshooting
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8 MJ-5 Control Panel Basic
Troubleshooting
8.1 Introduction
MJ-5 Control Panel service is primarily accomplished at
the factory. However, certain basic procedures can be
accomplished in the field. This chapter outlines a set of
procedures whose major objectives are to:
1.
Ensure that the fault is inside the MJ-5 (and not in
external connections or connected equipment).
2.
Ensure that the fault is not due to improper jumper
arrangements or some other user-correctable
condition.
3.
Determine whether the fault can be locally repaired
(e.g., by replacing a fuse).
Troubleshooting approaches depend upon the problem.
Among other indicators, you should consider:
•
Visual review of the unit.
•
Alerts (see Table 8.1 below).
Table 8.1
Alert Messages