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Easy PLC System Technical Guides

Introduction: GE Fanuc IC693CPU331 Troubleshooting Guide

This is a troubleshooting guide for a GE Fanuc 90-30 CPU331, part number IC693CPU331. Note that the revision, ie: the letter at the end, does not matter for the test you are doing. GE Fanuc Troubleshooting Guide

Step 1: Power Up

Go ahead and power that up. In this demo the CPU is in an empty five slot rack, next to an IC693CHS397, a high capacity power supply IC693PWR330. 5-slot-rack

Step 2: Go ahead and connect up.

When connecting up make sure that you have a blank program, that there is nothing configured, there is nothing in any of the slots two through five. Also make sure everything matches so that when you do try to get this processor into run mode, you do not have any errors or missing modules. This processor does not have a key switch to test that turns the processor's outputs on and off or the memory protection on and off. This will simply just go into run mode as soon as you're able to turn the outputs and you're in run mode. run-mode

Step 3: Additional Steps

Now, if this is a processor that you think might be giving you trouble then leave it in run mode overnight or over a weekend and make sure that the processor is still run mode when you go to check on it the day after or a couple days after. The green light should still be on, if for whatever reason the run light is off, then there is a problem and what you would do is check your target and underneath diagnostics and that will illustrate exactly what will happen. If it seems to be a problem that you can not figure out, this is something that we commonly look at.

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