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cp45fv-neo Emergency stop

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#85542

cp45fv-neo Emergency stop | 28 August, 2020

Greetings all,

my cp45 pnp machine is down this morning, gives me the code 0002 (front EME switch pressed). operator said they did not E-Stop, reset the unit and reboot the S/W a few times. the code pops up as soon as the software loads. I can turn the main power switch on however im unable to "stop,reset,ready" if i press the E-Stop it shuts the main switch off but dose not "Buzz".

I'm at a lose please help.

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#85544

cp45fv-neo Emergency stop | 28 August, 2020

Did you check all the voltages and fuses? The second worst is when a machine is down for a while and it ends up being something basic. The worst is when it started as something basic and someone introduces a new problem.

Also could there be any optical sensors that got dirty?

Normally with E-stop, I suspect an loose connection or broken wire because they have a closed circuit in normal operation. But if you are getting different results with the button pushed in then that it isn't that.

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#85545

cp45fv-neo Emergency stop | 28 August, 2020

thanks Stephen!!

I'm testing for voltage and have found 24v going through the E-stop to the main switch. If i trip the E-stop i can disengage the main switch. I have no more control to the hardware then that. The software is not throwing any code other then "0002 front e-stop hit". and I'm unable to put the unit in IDLE or READY at the switch board.

I will test for more conductivity and maybe a fuse. It seems odd to me that the unit doesn't sound any alarm starting up and always gives me that code. I know its not a S/W issue.

The optics are not even illuminating... the head will not lock in as well. no lights on the teaching box ether.

i appreciate your reply.

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#85550

cp45fv-neo Emergency stop | 31 August, 2020

I don't know this exact machine, but it likely has similar logic to some other Samsung machines. The E-stop buttons have TWO sections. One shuts off the "main start" button, the other informs the computer that the button has been pressed. If you dig into that area of the machine, you will see 4 wires to the E-stop switches. One pair is red, that is on the 24 V AC circiut to the "main start" relay. The other pair of wires goes to the computer. Cycle the E-stop button a few times, and if that doesn't clear the issue, then check the contacts on the non-red wires to see if the E-stop contacts are still working. A common issue with these is a too-forceful hit on the E-stop button may dislodge the contacts from the back of the button. Often, you can just push them back onto the switch body.

Jon

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#85551

cp45fv-neo Emergency stop | 31 August, 2020

did you try to unslot all computer boards (both PC and machine)and put them back? sometimes they loose contact and make wacky errors...

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#85555

cp45fv-neo Emergency stop | 31 August, 2020

Hello Jon,

I appreciate your reply, correct there are 2 red (24v) that control the main power and 2 blue (they control the power to the units operation keys ready, start, stop, reset, change feeders.) additionally there is a red jumper wire on the E-stop as well. We have removed the E-stop switch from the unit and confirmed that the continuity is working correctly.

On my other units if i hit the E-stop the unit freezes and flashes the operation lights and sets the alarm off. I'm able to disengage the E-Stop and stop, reset, ready, and I'm able to clear the 0002 E-stop pressed code. As soon as i start the unit up and the software reboots it throws the code 0002 instantly.

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#85556

cp45fv-neo Emergency stop | 31 August, 2020

Thank you bukas,

I have not tried to unslot the computer boards. Are you referring to unplug the hardware connections to each circuit board and reconnect them?

Thanks again for the reply!!!

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#85560

cp45fv-neo Emergency stop | 31 August, 2020

when something like this happens I usually do a connector and PCB slot cleaning. apply contact cleaner and plug/unplug (slot/unslot) connector (PCB) few times then blow it out dry. do it for each PCB and connector.

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#85565

cp45fv-neo Emergency stop | 31 August, 2020

Yes, the rightmost VME board is the IO_DPRAM, and it also handles the front panel buttons and E-stop inputs to the computer(s). So, reseat the connectors on the front of that board. Also, there may be an interface board on the bottom left (called CP 30 SUB I/F on my machine). The right rear connector on that board goes to everything on the front panel. Reseat that connector and the wide one to the left of it, which feeds the IO_DPRAM. That might fix it.

Jon

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#85573

cp45fv-neo Emergency stop | 31 August, 2020

thank you both,

We removed the connections and cleaned them. unfortunately no success, we are testing the conveyor interface board to see if we have a bad board. additionally we found that power supply #3 and #4 do have 110v going in but do not have 24v going out.

Thanks we really appreciate your time!!!

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#85575

cp45fv-neo Emergency stop | 1 September, 2020

Oh, well, there's your problem! Either there's a short or the power supplies have gone bad.

Jon

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#85576

cp45fv-neo Emergency stop | 1 September, 2020

do you get error when software loads or when you run program? once i had MPU stop because there was skipped array in my step file

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#85579

cp45fv-neo Emergency stop | 1 September, 2020

bukas,

Yes, as soon as the software loads it immediately throws a 0002 (front E-stop pressed) and will not come out of EMER mode until i stop, reset, ready, on the control panel.

yesterday however it also threw a E100 I/O I/F board communication defect.

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#85601

cp45fv-neo Emergency stop | 4 September, 2020

!!UPDATE!!

We have found the issue, power supply #3 was bad. The PSU was not sending 24v to the emergency system which is normally a closed circuit. Being that the emergency system was not getting the 24v it assumed the e-stop had been depressed.

Thank you to Dave Fish and smtnet.com and to jon, bukas, and Stephen. I will be using this form for future projects and will be answering questions periodically to assist others.

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#85602

cp45fv-neo Emergency stop | 4 September, 2020

great to hear you solved it :)

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