Error 603 on our Polar Mohr 66

Hello,
we have a polar 66 cutter model 2007. The machine has developed an error coded 603. When the machine is switched on, it boots normally but when we cut, sometimes the knife does not reach the cutting stick immediately so it does not cut.
At times it cuts a few times, then the error comes on and the machine does not cut.
The knife moves downwards but never reaches the cutting stick, then the error appears and from then on, the error will persist. any advise? Anyone encountered this and how did you solve it. For further engagements, you can reach me on jokwonga@yahoo.com or +256752018552. We do not have serious Polar Engineers to help us out in my country.

 

Hi Okwonga!
On the right side of the machine you have a cover. If you open it, you see right of the hydraulic cylindre a wire. This wire is pulling an encoder called MHS.
The error message 603 is from this encoder. The computer does not understand the counting signals or the signal the knife in the bottom dead center.

You can check if the wire is working correct. You need allways a bit of tension. This tension is just enough to pull the wire. If there is not tension the return spring is broken. If the tension is ok I have to make for you an explanation for the setting of the encoder.

Good luck
Coloured paper

 

Dear Coloured paper,
Thank you so much for your elaborate help.
Now, we checked the wire you referred to above and it's working correctly. The problem could be now with the setting of the encoder as suggested above.
Kindly help us with the explanation for the setting of the encoder so that we so that we get this done. I will keep you posted of the results as soon as we use the explanation.
Thank you so much for the help.
Okwonga

 

Hello.

We are having the same trouble wiht our Polar Mohr 66. Getting the 603 Knife Position Error and trying to figure out how to adjust the encoder to get rid of the error.

Any info would be very helpful. Thank you.

 

Same problem 603 & 654 & 653 :S any help?

 

HI Sir,
i have also same problem in pollar 115E Error 603 but error is coming so knife are stop same position.

 

Hi sir:
Please make this troubleshooting steps for the error 603

Blessing

 

Thanks sir

 

OK SIR
BLESSING

 

Hello Coloured paper,

we have got some 603 relatetet problems with our Polar 66 too. Model 75HXXXX from 2005.
The knife is stopping nearly 0,8cm before the cutting stick.
But not every time. Sometimes we could do some cuts and then the error displays and we could restart the machine and it works again for some further cuts.

The MHS wire should be ok, because the wire has some tension and is rolling back after the cut. So the spring inside the roll should be ok.
You write about the settings of the black encoder which is the MHS i think. Can you give me more information about settings of the encoder and how to change settings?

maybe you can help us.

Greetings from germany
WolfgangM

 

Hallo Wolfgang!
Grundsätzlich sollte man das Messer nicht zu tief einsetzen. Wenn das Messer nach dem Messerwechsel zu tief sitzt kann es zu der Fehlermeldung 603 kommen.
Das Gleiche kann sein, wenn die Fehlermeldung nach dem Verstellen der Messerstellung (durch den Exzenterbolzen) angezeigt wird.
Also entweder nach dem Messerwechsel oder nach dem Verstellen des Exzenterbolzens.
Wenn das Messer richtig gewechselt wird, kann man versuchen die Messerhochlaufsteuerung neu einzustellen. Man braucht dazu einen Schraubendreher und einen 10er Schlüssel. Dazu muss ich dann aber eine Anweisung schicken. Hier im Forum gibt es die Möglichkeit jemandem eine private Nachricht zuschicken. Über diesen Weg brauche ich eine Email-Adresse, denn ich muss dann eine pdf-Datei machen und schicken.
Grundsätzlich sollte diese von einem Heidelberg-Monteur durchgeführt werden. Schon aus Sicherheitsgründen. Ich weiß, ich weiß ..... Es gibt ja nicht nur Heidelberg.
Lass mal was von Dir hören und wir sehen was wir machen können.

Buntpapier

 

Hi sir:

Look for these steps:

KNIFE POSITION ERROR

After start of cutting or during active cut, this message is output if the positions of
electrical BDC and knife pulse counter are not plausible with respect to each other.
In such a case, the knife movement is interrupted or not permitted, for safety
reasons.

Remedy:

Knife upstroke control is defective.
- Check correct grounding of frequency converter.
- Check cable route or bus connection / knife upstroke control - SAP- board/
CPxx- board.
- Check / replace SAP- board.
- Check / replace CPxx- board.
- Check data of knife gear control or knife trace; wrong pulse values in the trace
are represented inversely
- Check mechanical play of gears
- Replace transformer TR1 on 78 ES / 78XS, or, if necessary, replace entire PM
unit (Transformer id. no. 250967, series as of mach. no. 7161001)
- Check / replace SK- board.
- Replace CU of 66.
- Replace power supply unit G1 of 66.

 

Hallo Buntpapier,

danke für die Rückmeldung. Ich bin leider zu blöd eine conversation zu starten.
Vielleicht schreibst du mich der Einfachheit halber an, dann gebe ich dir gerne ne Mail-Adresse.

Das Messer sollte eigentlich nicht zu Tief sein und die Excenterschraube steht auch zwischen 1 und 2.
Wir können natürlich mit einem Messerwechsel testen ob es dadurch besser wird.
Resettet sich die Messerhochlaufverstellung nach einem Messerwechsel, so dass die Maschine dann einen neuen Tiefpunkt einstellt?

Der Fehler tritt auch erst nach ein paar Schnitten auf, sollte er dann nicht immer den Fehler haben, wenn das Messer zu tief sitzt.
Und es ist noch Platz zwischen Messer und Schneideleiste. Die Maschine hört also schon auf, bevor die Maschine zu weit schneidet.

Vielen Dank und viele Grüße
WolfgangM

 

Hello Folks,

If someone has the same error.
For us it was the MHS that caused the problem.
After we changed the MHS, the Polar 66 has no problems anymore.

We have tried a few things before like changing the power supply but in the end it was the MHS.

Maybe this helps some people with the same problems.

greetings
WolfgangM

 

Great Wolfgang

But always must be test the Regulated power supply if there are in Tolerance, and after you be sure are is in tolerance o.k, so you can replace the MHS