Polar 76EM Guillotine

[SSS Printing]

Hi all, can somebody help me please? Our Polar 76EM is sending the backguage plate all the way to the back when we turn the machine on and it is stuck there instead of coming to its home position. Has anybody else had this problem and can they advise how to fix it?

Thanking you in advnace for your help - Russell Simpson, SSS Print & Sign, Mackay Queensland

 

[Buntpapier]

If you switch the 76 EM on you have to do a so called reference run. If the machine does not do this sequence by its own you can start it again by reordering a new backgauge movement.
If the reference run will not be successfully finished you can use the auxiliary function. After switching on the machine push the button “C”. Now you can move the backgauge without measurement. Backgauge positioning is not possible. Using a program is not possible. You can cut.

So far the operator side of this question.

The technical background is a malfunction of the measurement system inside the machine. Usually this is a broken trailer cable from the linear scale underneath the rear table or the linear scale itself is not working correct. Theoretically it can be a broken board “TAM” or a broken board “AR”.

If you have one of the very first 76 EM machines (before machine number 5461700), the board “TAM” with the part number 016231 has a little black switch to simulate the reference point during the reference run. But this is already a hint for a service engineer.

In other words you should call the regular service and ask for help.

Good luck
Buntpapier

 

[SSS Printing]

Thank you for your help - by trial and error we have found that the limit switch behind the round wheel at the front of the machine is worn and have ordered another - t5his switch prevented the guage from stopping at home after it found the front limit switch. Thanks for your assistance as always - very helpful advice.

 

[Buntpapier]

That's why I like the auxiliary function. You can test the pure drive function including drvie control, motor, motor brake, limit switches, etc.

Good luck
Buntpapier