I dont know what the (PACR) is but it must not be wired in this machine because when I look at the "Master On" switch terminals it is wired to "13" telling me that this machine has all the saftey switches in series that go straight to the "Master On" button,right?
Whats weird is when I pushed the Master on nothing happens so I suspected a saftey switch malfunction so I ran a jumper straight to the master button. But 2 things occur that puzzle me.(This is a used machine we bought so it didnt work yesturday,we got it in unknown condition)
1. The relay(CRM I assume) that supplys the hot 120V to the input buttons does switch over the coil, but it wont latch? I dont see anything else that would denergize/unlatch the relay coil because I bypassed all of the saftey switches and the e-stop by jumpering straight to the Master On Button. There is a PLC connection on the relay, but it goes into an input module so I assume it is just for status monitoring of the relay for the PLC programing. And like I said, it appears whatever (PACR) is,it is no longer in the circuit because the master on button is wired to 13 and (9) which goes to the relay coil.
2. Second thing that puzzles me is what I found trying to test all the safety switches that are in series. Assumming they are all tied to 120V,I thought I should be able to test them for 120V with a multimeter(assuming they all are working) with the red going to wire 13, that I of course I disconnected from the "Master On" button, which is the wire that should be cominf from the last saftey switch before the "Master On" button. Then I would connect the negative probe to the transformers Neutral,right? Well I get nothing. And with the 120V hot jumper tied to the "Master On" button I then get a 120V read off of the 13 wire(Not still tied to the Master On at this point). Perhaps this is a safety thing so that the saftey switches only get there 120V supply voltage when the machine "Master On", a.k.a the (CRM) relay, is latched. But Im puzzled because it seems they both need one another. The safety switches need power to even get to the (CRM) to energize it so how could the (CRM) need to be energize to supply the safety switches with 120V? Chicken or the egg?LOL!
Now there are 2 more relay next to the CRM maybe this is what Im missing? The next one is label "CR" and the third I think is for the decoiler which we dont have.