GE / IP FANUC Series 90/30 In Stock
This troubleshooting guide is a test of GE Fanuc IC693ALG392 high density analog output module that runs either current or voltage output, 0 to 20 milliamp or -10 to +10 volt DC output.
Note on the wiring diagram, first is that you’ll notice that in this illustration is a power supply on terminals #1 for my positive and #19 for my negative.
Note that illustrated is a 24 volt DC power supply. This is not an option. You must have this power supply in order to test this module.
Once you power up you can see that it is powered up because you have a user power supply okay LED indicated here.
The next thing (see below) is that the current is coming from the left hand side. You will see in channel 1….and this is all the odd numbered terminals, 3 thru 17, are your channels 1 through 8. And your voltage channels are the even terminals on the right hand side. Channels 1 through 8 are terminals 2 through 16. Make a note of this.
Now you are going to test the ALG392 and you are going to configure it in Proficy Machine Edition.
In this illustration is an IC693CHS397, 5-slot rack. It’s being powered by an IC693PWR330 power supply. And the processor is an IC693CPU374 plus for this test. Now in the Proficy Machine Edition side, you should select a new, clean open file for test purposes. Then open your main rack and select a CHS397, 5-slot rack, PWR330CPU374 and in slot number 2 the IC693ALG392.
So you have matched what is in Proficy Machine Edition with what you see physically in front of you.
In order to configure this setup, you want to go to slot number 2. Right click and select configure or you can simply double click on slot number 2. And the ALG392 settings and configuration will pop up allowing you to change values and such.
So the first thing under the tab settings and underneath parameters is active channels. And it always starts with one active channel but you want to test the whole card, so you want to select eight channels. You do that by either right clicking under value or double clicking under value on the 1 itself and a window will pop open which will allow you to change that 1 to an 8.And then you select okay.
Another thing to note on this particular page before you go to another tab is the reference address. That is the third setting down. The reference address, since this is a new clean file the computer has selected percent AQ, which is analog output, 0001 and that is where you’re going to start putting your values in the analog output reference table in order to get your readings.
The next thing also in Proficy Machine Edition is the output channel data. So if you select that, you’ll see all your channels 1 through 8 and you’ll see whether they’re selected for voltage or current. The default setting automatically is 0 to positive 10 volt DC. And if you right click on that and select data entry tool, you’ll be able to change each channel to whatever you want. It could be 0 to 10 volt, negative 10 volt to positive 10 volt, 4 to 20 milliamp, or 0 to 20 milliamp depending on which side you’re testing as shown before on the door scheme.
So for this test just use the default reading which is 0 to positive 10 volt DC and all channels are going to be 0 to 10 volt DC. Now the processor is already in run mode so go down to reference view tables and then open up your default tables and the second selection down is percent AQ or analog output.
You’re going to double click on that and your reference table comes up and the top right hand corner is where it starts analog output 0001. And in there you’re going to put a full value of 32,000 and the results should be positive 10 volts. What you should also do is put 32,000 in all the other channels 1 through 8 so that you can go through and test each one.
Here’s what this looks like on a multimeter. Take your two leads from your multi-meter, positive and negative. Your negative goes on 18, voltage common. And you’re going to start from number 2 which is the top terminal and make your way down.
And the voltage reading you’re looking for is 10 volts or as close to ten volts as you can possibly get for each channel (see above) all the way from 1 through 8. So they should be giving you full value. But since this is not a discreet module, this is an analog output module, it has range and resolution. And you want to check that you have full range and resolution of the analog output card.
So you’re going to go back to terminal number 1; it should read just about 10 volts. Then you are going to take that 32,000 that you initially put into analog output address number 1 and you’re going to cut that in half to 16,000. And what you’re trying to do there is make sure that you’re getting 5 volts or very close to it, ie: 4,982 is close.
Then you’re going to take that 16,000 and divide that in half. Go to 8,000. You’re looking for 2-1/2 volts, and 2.485, for example is close.
And then you can even go to down to 4,000. You’re looking for 1-1/4 volts or as close to it as possible, for example, 1.236.
So what you’re doing is making sure that it’s not a failed card. What we normally see is that if a card fails more often than not, it fails at full value. In other words, no matter what value you put in the output table, it’s always going to read 10 volts for some reason.
So you want to make sure that you scale down in the way suggested above. This way is just going from 32,000, to 16,000, to 8,000, and just descending on each channel to make sure that they have their full range of value since it is an analog output.
Then you do the exact same thing with the milliamp side. So as far as testing the milliamp side, it is the same exact test that you just did for the voltage. The only difference is you will have to set your multi-meter to read milliamps. And the common in this particular case is the same common as your power supply. So you’ll take the common and put it on terminal number nineteen and then test all of your corresponding channels from terminal 3, 5, 7, 9, all the way through 17.
Common with the ALG392, are a few things:
Any of those things would be a major or a catastrophic problem with that module.
Tags: GE Fanuc, IC693ALG392, Troubleshooting Guide
This entry was posted on April 23rd, 2015 and is filed under GE Fanuc, Troubleshooting Guide. Both comments and pings are currently closed.
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