Hi.

Can anyone help me identify these two modules? (images below)

As we are currently looking for spare parts, of these module (which are likely to be EOL), we are trying to identify their names.

They are part of a computer which controls a pastry-making industrial machine. The whole thing was custom made in the '90 by a small company which does no longer exist , so there is literally nobody we can contact to find out what these things are actually called. (and before you ask, no reference to these two modules is to be found anywhere in the instruction booklet which came with the machine)

All I can tell you is that they are equipped with ISA connectors, and both of them are connected to an acl-6126 board. (the computer also includes two more boards: an acl-7122 and an acl-833)

We would really appreciate if anyone of you could give us a hint about the names of these modules.

Thank you!

 

hi MS,
Welcome to AAC.
Looking at the PCB top left Copper text I would read.
DO24R as Data Out 24 off Relays
and the DI24O as Data Input 24 off Optical.
Those codes match with the onboard components.

E

 

This is just a bit more detail on Eric's description.
My guess is that the top board is a relay output board. It will receive logic level signals from the IDC connector at the top. The three 18 pin DIL ICs will be 8 channel relay drivers. (The picture is not sharp enough to read the part numbers.) The 24 blue devices below them (Labelled RL0 to I assume RL23) are relays to control external loads. (Probably via larger contactors.) The 24 blue things below the relays are capacitors which together with the 24 27 ohm resistors will form snubbers across the relay contacts. The 24 LEDs will indicate that the relay coils are being energised. There will probably be a part number on the relays so it may be possible to get replacements.

The lower board is probably a 24 channel opto isolated input board. The 24 4 pin ICs will probably be opto isolators. Again the picture is not sharp enough to read the part numbers on the ICs.
I think if you want spare boards you will have to find a company that will make them for you. The board should be easy to repair if the parts are not obsolete.

Les.

 

Thank you very much, ericgibbs and LesJones for your replies

 

These appear to be some custom PLC I/O boards which replicate the similar off-the-shelf Opto22 series, using plug in modules.
See ebay 132337647834 for an example.
Most likely an OEM part #.
If defective, would require a DIY fix.
Likely either relays or the opto's would be the first suspects.
Max.

 

Thank you for your reply Max, we will check on ebay.

 

This was meant as an example, if thinking of using the Opto22, it would require some integration.
Max.

 

Are you sure the problem is in the boards, or is this for spares for future failure eventuality?
They appear to lend themselves to a straightforward repair.
Also fairly simple to reverse-engineer.
Max.

 

Western Reserve Controls of Akron, OH also makes that kind of industrial I/O
https://www.wrcakron.com/

 

Western Reserve Controls of Akron, OH also makes that kind of industrial I/O
https://www.wrcakron.com/

I see they use Opto22 modules in some of their custom boards!
Max.

 

I see they use Opto22 modules in some of their custom boards!
Max.

I'm not sure if they developed their own modules in a mechanically identical package or had an agreement with Opto-22 to use the WRC brand on the Opto-22 part. IIRC correctly the WRC part was 10-20% cheaper.

 

Just to look at them and their identical appearance, I would guess it is an Opto22 re- branded/re-labeled part.
Opto22 also have the engineering spec on their site for the footprint details and mounting component source, I have used this for custom board designs of my own, using the Opto modules.
Max.

 

Just to look at them and their identical appearance, I would guess it is an Opto22 re- branded/re-labeled part.
Opto22 also have the engineering spec on their site for the footprint details and mounting component source, I have used this for custom board designs of my own, using the Opto modules.
Max.

I used to know the guys who ran WRC and they were always circumspect when responding to the question about the provenance of their modules. That is why I am uncertain about where theirs came from. There was a time when purchasing agents demanded a second source for every product that was purchased for production. Opto-22 might even have asked them to be a second source for all I know.

 

CIC-DO24R is a 24-channel relay output board.
CIC-DI24O is a 24-channel opto-isolated input board.

Are you sure that these two boards are connected to an ADLINK NuDAQ ACL-6126 board?
This board has three connectors. CN1 and CN2 are 20-pin connectors for 16-bit output and 16-bit input, respectively.

 

Here is a 24-channel relay board.

http://www.a2s.pl/en/db-24rd_24-p-3192.html

 

Aside from everything else, those boards are quite probably repairable. Quite probably the integrated circuits are still available, although it would be very wise to install sockets, it looks like they are soldered in place. And the boards are spacious enough that a competent technician could replace any of the parts. But once again, are you certain that a problem exists with the boards? Obsolete is not the same as failed. If you have the drawings of the circuits of the machine then diagnosing the failed components should be possible. I have done a lot of that kind of servicing.

 

It is far more likely that any problems are with the circuit boards inside the computer that drive these boards. And those may be a lot harder to replace. If the machine is still working correctly I suggest making a detailed sequence of operation list, getting down to the point of what switches on and when. If you have the listing for the control computer program you are OK, but you still need that very detailed sequence of operation to be able to replace the older hardware.

 

It is far more likely that any problems are with the circuit boards inside the computer that drive these boards. .

It has been mainly my experience that any components computer related that communicate with the outside world are the First suspects, due to unforeseen/unknown events occurring and causing failure, and often the I/O (relays, Opto's) are the most likely stressed.
Max.