IC693MDL740 Output Module How-to Test GE Fanuc PLC Proficy Programming Tutorial & Training Video

Introduction: GE Fanuc IC693mdl740 Troubleshooting Guide

This troubleshooting guide is a test of a GE Fanuc IC693MDL740, a 12-24 volt DC, positive logic, 16 point discrete digital output.
What you’re going to do is test this module using special devices and configure it in Proficy Machine Edition.

Step 1: Check Equipment & Initial Setup

Illustrated here is an IC693CHS397 5-slot rack. You’re welcome to use a 10-slot rack if that’s what you have. The 5-slot rack is illustrated for this test. It’s being powered by an IC693PWR330 power supply, and the processor is an IC693CPU374 plus.
If you look to the right-hand side of your screen, illustrated is a 24 volt DC power supply (see below),
which is giving power to your positive terminals, which are 1 and 11 and your negative terminals
which are 10 and 20 illustrated.

According to the wiring diagram (see below) positive is your 1 and 11 terminals, and negative is your 10 and 20 terminals.

Step 2: Setup in Proficy Machine Edition

In Proficy Machine Edition (see below) what you’re going to do is start a new open fresh file. You’re going to start by selecting, under your main rack, under navigator bar, a CHS397 5-slot rack,
PWR330 power supply, and a CPU374 processor. In slot number 2 you’re going to be doing the IC693MDL740, the module that’s in question here.

 

 Step 3: Proficy Machine Edition Configuratiions

Everything that you have physically in front of you, ie: illustrated here, you should now have in Proficy Machine Edition. All you’re going to do is click the toggle online button, which is the icon that looks like a lightning bolt. You’re going to go online with it. You can see blinking when you’re connected.
Once you’re connected up to it, you’re going to hit the green hand print, which puts you in programmer mode and click that. Next thing, you’re going to go to target. In the drop down menu you’re going to about halfway down to online commands and select clear. A clear memory window will pop open (see below). You want to select the bottom two selections, which is controller fault table and IO fault table.

Now you’re going to go ahead and clear those. Don’t select all memory or anything else that you may potentially lose. This is just a simple test on this output module, and all you’re doing is clearing any faults that were previously in the processor so that you can get it into run mode.

Step 4: Getting Into Run Mode

Next thing is in order to get it in run mode you‘re going to hit the download and start active target button, which is where it looks like downloading information with a green arrow pointing down and a run button in one. 
It’s going to tell you that the build is now in progress. It’s going to start to configure this physical configuration here. Then it’s going to ask you what you want to download to the controller. In this particular case you want to download hardware configuration and motion and logic. That’s the top two selections. You’re going to leave everything else out and you‘re not going to write anything to the permanent flash memory. Again, just the top two selections, select OK. Then the build will finish. When it is complete, it’s going to ask you if want to enable your outputs. That will allow you to get into run mode.

You’ll see Start controller. Outputs enabled and then you’ll be in run mode. That means that the configuration that’s physically illustrated here matches what’s in the Proficy Machine Edition software and it agrees with it and it’s good to go.

Step 5: Running the Test, Step 1

The next thing is the test. In order to do the test, (see below) go to slot number 2 and double click it, or you could right click and select configure. A tab will pop open that says 0.2 or slot number 2 location. It’s going to have parameters. In the parameters you want to find out what your reference address is. Since this a new file, its going to be %Q which means output — 00001. That’s the location that I want to start to toggle my bits on.

 
Once you know your location and the address, you’re going to go down to default tables, which are under reference view tables. you’re going to expand that and double click on output. On the top right-hand corner is where %Q 00001 is. That’s where you’re going to start to put in your bits to toggle them from a 0 to a 1 in order to turn my outputs on.

 
As you  see on the module all of the outputs are turning on as you are turning them on. (see above)
Note that just because the LED lights up and it says for user reference these channels are on, doesn’t necessarily mean that they’re working. They could state that it’s on but not actually have any power going to it. You want to do an actual physical test.

Illustrated here (see above) is a solenoid or a relay. It’s powered by 24 volts, has a positive and negative lead coming off of it. Those positive and negative leads are attached to two probes, positive and negative. Now since this is a positive logic, what you’re going to do is plant your negative probe to the negative lead from you power supply, which is on. you’re going to go through all the corresponding terminals to the channels. (as below)

The first channel is starting on terminal screw number 2. You will hear in the background the solenoid clicking, letting you know that you’ve got 24 volts at all of these points.
If you don’t have a 24 volt solenoid or relay or anything like that, that can make some sort of a noise, then you could always use a lightbulb. Using a solenoid is preferable because you don’t have to be looking at the solenoid to know that it’s clicking on and off. You can hear it, which allows you to touch these terminals and make sure that you’re hitting them all properly. Again, you could use a lightbulb if you like. You can hang one that’s within view of where you’re probing, but it’s sometimes a little bit better functional wise to use a solenoid.
So you have now tested that this is working properly.

Step 6: Testing Step 2

The next thing you want to do, of course, is just the opposite. You want to make sure that all of the points that you’ve just touched, all 16 channels, can be turned off and they actually stay off because that represents the other problem. Sometimes it will seem you have a 0 bit in the location and that would suggest that the point or the channel should be off, but it really isn’t.
What you can do is touch your positive lead just to give you an example. If you hear one of these turn on, then obviously it’s something wrong with it. It’s stuck in the on position. As you re-probe with everything off nothing should be live. You should be able to turn them all on or turn them all off without any false readings.
If you don’t have any false information coming from the user reference LEDs, from these A and B channels that are suggested here.
Another thing to check is a tiny F for fuse. If something does go wrong and it turns out to be a fuse that’s blown, this little F here will turn green. An LED will come on telling you that there is a blown fuse in either the A group of channels or the B group of channels. That’s another thing you can look for that’s pretty much a dead giveaway.
These are all of the problems that you normally see with these MDL740s since they are such a simple product.

Tags: GE Fanuc, IC693MDL740, Troubleshooting Guide

This entry was posted on May 1st, 2015 and is filed under GE Fanuc, Troubleshooting Guide. Both comments and pings are currently closed.