Control card could be faulty (either relay contact or coil problem or relay coil supply problem)

Try by swapping control card.

 See the infeed module basic drawing . T. 72 is a NO contact of small relay. --if you checked all enabling and you all drives are no problem (drive status  transfer back to infeed from device bus) --your yellow LED on ,your green LED off?---

if everything ok as you said it is possible that small relay has issue. I suggest --NOT replace control card for Infeed (it is not like drive--card and power section removable ) --you need replace the whole infeed module to trouble shooting --then send bad module to  repair shop 

the infeed module version A,B or C will compatible  if power rating same 

Tomek11

Thank you for your reply. Control card on Infeed module? Yes? 

what is the difference between modules A B C version?  

can they be swapped?

Thank You.

 do you see the power supply drawing?

T71=terminal 71, T 72.1=Terminal 71.2

Tomek11

Now the machine is not working. Last week it ran for ~10 minutes.
T71?