WEKO BAE information required

[Waqas_zahid]

Anyone care to share any information regarding the WEKO BAE sheet alignment unit? I need to check this unit for malfunctions, the output to the sheet stopper coil does not create a strong enough field to actuate the sheet stopper. I need to know what is the usual output of this unit. The part number listed on the device is 68.110.1311

Any help would be much appreciated.

 

[junker1984]

I'm drawing off some very vague memories here, but they might be worth something to you. Depending on what country the press was manufactured for, the solenoid will be either 110 or 220 volt. The issue is not so much lack of sufficient voltage going to the solenoid, but a self holding circuit within the BAE to maintain the circuit. I've seen this enough over the years so that it is a "common problem", but one I've only resolved with replacement of the Teledix. I know, ouch. One thing I may suggest is to check the glass fuses in the feeder electrical cabinet. You'll find a fuse holder group with three black caps in that cabinet, one of them is the 20 volt circuit for the Teledix. Good luck.

 

[junker1984]

Oops, sorry...I had Teledix in my mind, even though you clearly stated Weko. There were multi pin test modules you could plug in to troubleshoot problem, haven't seen those in years. I have seen the schematics for the Weko, as a matter fact, threw a set away recently. :-(. Maybe "superteto" has a set he could sell you?

 

[Waqas_zahid]

Thank you for the response, the coil was actually rated at 1.5 to 60 VAC. When I checked the output at the WEKO it would give 3.5VAC and at the same I was getting a DC voltage reading of around 4 VDC as well, that got me super confused, normally when there is a DC component of the voltage you can't really trust the voltmeter to read the correct AC voltage reading for you. Anyway I was already certain the coil wasn't faulty since I checked it on a different machine that had a Teledix unit. I am not sure about a holding circuit haven't seen the internals of a weko unit Anyway this weko unit was sealed and I couldn't open it up fully, however I did see a fuse inside the weko unit and asked the customer to have it checked if they manage to open the unit, turns out the fuse was indeed the problem and I recieved confirmation this morning that they have changed the fuse and the machine is back in production, I had already checked the fuses inside the cabinet while I was trouble shooting the problem but was not lucky to find any issues. About these test modules, where can I get one? will it help me check all kinds of sheet alignment units either from weko or teledix?

 

[junker1984]

The test modules I mentioned were for the Weko alignment system only, and were part of the proprietary tooling kept in the service department. Haven't seen any in 20 years..., their application is explained in the old S-offset repair manuals.

 

[Waqas_zahid]

20 years is a long time, doubt they are still available. Thanks for the response I will have a look at these manuals

 

[junker1984]

You saying I'm old??????

 

[Waqas_zahid]

haha, no, I didn't mean to say that

 

[Mathew]

I had repaired some of these modules. Unlike TELDIX, WEKO is very strange in using old Logical circuits. As you may know, there are two different circuits, trigging and holding. When the Feeder stops for any reason, Fron Lays and Grippers should stop immeddiately to prevent any damages. For this reason, these two modules, WEKO and TELDIX, drain 80VDC through a big capacitor which inside the box. Then when the lever of the coil stops the cam follower, holding circuit generates 12VDC to hold the coil. If you open the modules, you will find two power transistors. It's a little tricky to check them on board. I advise you to replace both of them and see the result. Do not mix these two power transistors with voltage regulator 7812.

Good luck,

 

[Waqas_zahid]

Dear Mathew. Thank you for the detailed reply I will keep that in mind for the next time I face any problem related to these units.

 

[ahmed elsebaie]

i need the sensor RL2 that used with this
weko BAE 68.110.1311 A

any one can help or refer me to good supplier

 

[junker1984]

These Weko components were upgraded to Teledix/Visolux electronics in the very early 80's and unlikely readily available. You may try Demer's Parts in Florida, USA.

 

[ahmed elsebaie]

please send me the link on ebay

or contact me directly at a_elsebaie@hotmail.com

 

[ahmed elsebaie]

i search ebay and i find this one

68.110.1322 A

is this sensor compatible with my weko board BAE 68.110.1311 A

 

[junker1984]

Components on eBay are the upgraded version, Ahmed. Sorry for the confusion,

 

[junker1984]

I don't have the information to back this up, but even if the bracketry were dimensionally similar, I HIGHLY doubt the circuitry is compatible. Good Luck!