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How-To Troubleshoot: IC693ALG392 – GE Fanuc PLC Proficy Programming Tutorial


Hello and welcome to PDFsupply.com.
Today we are going to be testing an IC693ALG392. This is a high density analog output module
that runs either current or voltage output, 0 to 20 mili-amp or -10 to +10 volt DC output.
I wanted to point out on the wiring diagram. First is that you will notice i have a power
supply on terminals one for my positive and 19 for my negative. This is a 24 volt DC power
supply and this is not an option. You must have this power supply in order to test this
module. You can see that it is powered up because we have a user power supply OK LED
indicated here. The next thing is that the current is coming from the left hand side.
You will see in channel one, I channel one. And this is all the odd numbered terminals,
3 through 17 are your channels 1 through 8. And your voltage channels are the even terminals
on the right hand side. Channel 1 through 8 is terminals 1 through 16. So please note
that and where to get the common, which i will go back to that in a minute.
So what we are going to talk about is how to test this IC693ALG392 and how to configure
it in Proficy Machine Edition. So far i have this in an IC693CHS397 5-slot rack. it is
being powered by an IC693PWR330 power supply. And the processor is an IC693CPU374 plus for
this test. Now in the Proficy Machine Edition side, i have selected a new, clean open file
for test purpose. I have opened up my main rack and selected a IC693CHS397 5-slot rack,
IC693PWR330, IC693CPU374 and in slot number 2 i have the IC693ALG392. So i have matched
what is in Proficy Machine Edition with what you see physically in front of you here. The
next step in order to configure this is you want to go to slot number 2, right click and
select configure or double click on slot number 2 and the IC693ALG392 settings and configuration
will pop up allowing you to change values and such. So the first thing under the tab
settings and underneath perimeters is active channels, and it always starts with one active
channel but we want to test the whole card, so you want to select eight channels. You
do that by either right clicking your value or double clicking, and a window will pop
open to allow you to change that one to an eight, and you select OK. Another thing to
note on this particular page is your reference address, that is the third setting down. The
reference address, since this is a new clean file the computer has selected percent A/Q,
which is analog output, 0001. And that is where i am going to start putting my values
in the analog output reference tables in order to get my readings.
The next thing also in Proficy Machine Edition is the output channel data. So if you select
that, you will see all your channels 1 through 8, and you will see whether there selected
for voltage or current. The default setting automatically is zero to +10 volt DC. And
if you right click on that and select data entry tool, you will be able to change each
channel to whatever you want. It can be 0 to 10 volt, -10 volt to +10 volt, 4 to 20
mili-amp, or 0 to 20 mili-amp depending on which side you are testing. So for this test
i am just going to go for the default reading which is 0 to +10 volt DC and all channels
are going to be 0 to 10 volt DC. Now the processor is already in Run Mode, and now that it is
what i want to do is go down to reference view tables, and then open up my default tables
and the second selection down is percent A/Q, or analog output, so i am going to double
click on that. And my reference table pops up and at the top right hand corner is where
it starts analog output 0001. And in there i am going to put of a full value of 32K and
the results should be +10 volts and what i also have done is put 32K in all the other
channels 1 through 8 so that i can go and test each one. I am going to show you what
that looks like on a multi-meter. I have my two leads from my multi-meter, positive and
negative. My negative goes on 18, voltage common. I am going to start from number 2
which is the top terminal and make my way down. And the voltage reading i am looking
for is 10 volts or as close to 10 volts as i can possibly get for each channel. So they
are giving me full value. Since this is not a discreet module, this is a analog output
module, it has range and resolution and i want to check that i have full range and resolution
of the analog output card. So i am going to go back to terminal number one, which again
is just about 10 volts. Then i am going to take that 32K that i initially put into analog
output address number 1 and i am going to cut that in half to 16K. and what i am trying
to do there is make sure that i am getting 5 volts or very close to it. I have 4.982
volts. Then i am going to take that 16K and divide that in half and go to 8K. I am looking
for 2.5 volts, and i have 2.485. And i can even go to 4K, and i am looking for 1 and
a quarter volt, and i have 1.236. So what i am doing there is i am making sure
that it is not a failed card because 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 i put in
the output table, it is always going to read 10 volts. So you want to make sure that you
scale down. However you see fit to do it, my way is just by doing it 32K, 16K, 8K, and
just descending each channel to make sure that they have there full range of value since
it is an analog output. And i do the exact same thing with the mili-amp side. So as far
as testing the mili-amp, it is the same exact test we did for the voltage, the only difference
is you will have to set your multi-meter to read mili-amps, and the common is the same
common as your power supply. So you will take the common and put it on terminal number 19
and then test all of your corresponding channels from terminal 3, 5, 7, and 9 all the way through
17. Another thing we commonly see with the IC693ALG392
is that if you plug the module in and you turn it on and you do not get your OK LED.
That is usually a indication that there is a problem with the module. You normally would’nt
get any response from it. The second thing is if there is something wrong with its ability
to accept 24 volt DC through the user supply power supply, if this LED is not on telling
you that that’s working properly, that is another indication. Third problem is the problem
i mentioned before, where the output fails at full value. And the fourth one we see is
that everything seems to be working properly, and you put a value in and you are not getting
anything in return on your multi-meter, it is just reading zero.
So any of those things would be a catastrophic problem with that module and is something
that we are able to repair here at PDFsupply.com. We offer exchange programs, new and re-manufactured
products and same-day shipping. So if that is something that interests you, please see
us at PDFsupply.com, Thank You.

Bernard Jenkins

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