IC693ALG220 How-to Troubleshoot Test 90-30 PLC GE Fanuc Proficy Machine Edition Programming Tutorial

Introduction: GE Fanuc 90-30 Troubleshooting Guide

This is a troubleshooting guide for a GE Fanuc 4 channel analog input module IC693ALG220 at a test voltage of -10 to +10 volts.

Step 1: Configuring Module in Proficy Machine Edition

This illustration includes an IC693CHS397 5-slot rack powered by an IC693PWR330 power supply. The processor illustrated is an IC693CPU374 plus.

On the Proficy Machine Edition side (see above), open a new open file that has the same exact main rack configuration in the software as illustrated here: the 5-slot rack, 330 power supply, IC693CPU374 plus, and an IC693ALG220.
On the configuration side, there is nothing to really configure for an ALG220 because it is a fixed 4 channel device. There is no option to change the amount of channels and there is no option to change the voltage.
Under reference address is the only important thing that you want to have, underneath the tab. So if you click on slot number 2, you can right click on it and select Configure, or you can double click on slot number 2 where your IC693ALG220 resides.
When the tab comes up there is a sub tab or sub category called Settings. If you go there it will give you your reference address, which for this new file the computer will automatically selected percent analog input or percent A/I’s 0001. And this lets you know exactly where you want to look for your values
when you are testing each channel in the analog input table.

Step 2: Select Analog Input

So the next thing you are going to do (see below) is go down the right hand side of the navigator to Default Tables and select analog input, which is the first heading. Then you’re going to open up that tab and it is going to give you a table where you can see all the values that you are going to be inputting for this module.

The test unit illustrated here (see below) is a 3-volt lithium battery with positive and negative leads coming off so you can probe each channel.  You should have the CPU already in Run Mode and you are going to go ahead with the test.

Step 3: Identify and Probe Channels

Another thing is to check the door card to see where each channel resides 1, 2, 3, and 4. Terminal 3 and 5,3 is positive and 5 is negative. Terminals 4 and 6 for channel 2. 4 is positive and 6 is negative. and 3 and 4, 13 is positive and 15 is negative for 3. And terminals 14 is positive and 16 is negative for channel 4.
Now you are going to probe all those channels holding your battery on there long enough to get a reading. And what you are hoping to do is to see the same value on each channel because each channel that you are selecting is configured the same, all scaled the same, and you are using the same power on each channel, 3 volts. Therefore, all your readings should be exactly the same.
And another thing, it should be a positive reading, so make sure that you have your leads correct, the positive and negative polarities correct, otherwise you are going to get a negative reading. So if you have the same reading on each one, your module is a good working module, a good working IC693ALG220.

Step 4: Additional Steps if Necessary

Now some of the troubleshooting tips are:

• if the OK light is not on, on the module, that usually means that there is a problem with it. I have had situations where the light was deviated from being able to see it, so you can look into that. But usually if the light is not on, it is not a working device.
• if one or all the channels are giving you an erroneous reading, then there is something wrong with the module.

Tags: GE Fanuc, IC693ALG220, Troubleshooting Guide

This entry was posted on April 28th, 2015 and is filed under GE Fanuc, Troubleshooting Guide. Both comments and pings are currently closed.