Omron CS1W-MC221 -, Operation Manual

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Troubleshooting Tables Section 12-1
12-1 Troubleshooting Tables
This section provides tables to refer to when a particular problem arises. The
tables provide a general description of the nature of various potential prob-
lems, the probable cause, items to check, and suggested countermeasures.
For more detailed explanations, refer to sections 13-2 onwards.
12-1-1 Items to Check First
If a problem has developed, check the following items first.
No. Category Items to check Checked
1 Installation
environment Is the environment dusty?
2 Are there conducting materials (such as metals, carbon, etc.) in the environment
that could get into the equipment?
3 Is the ambient temperature higher than the level shown in the specifications?
4 Is there excessive moisture (from humidity, water usage, etc.)?
5 Are there corrosive materials in the environment (acid, salt, sulphur, etc.)?
6 Is there a source of noise nearby (such as a welding machine or inverter)?
7 Wiring Are signal lines and power lines placed in separate ducts?
8 Is there proper grounding?
9 Does the power supply have a noise filter?
10 Recent changes Has there been recent construction (involving welding, and so on)?
11 Has a power supply been added recently?
12 Have there been changes or additions to the system (including programs)?
13 Errors Was there any lightning nearby?
14 Was there any interruption caused by a fuse or breaker?
15 Is the power OFF?