Hey everyone,
I have an older Motoman s3 robot with MRC controller. I have installed my input power to it. I get the source power light on the CPS-18 power supply but no power on light? I have checked all Emergency stops and even replaced the power supply when i could find no other issue. I bought this for an industrial maintenance program i teach in a high school. Any other things i should look for? Does the CPU have an input somewhere that it is looking for to switch on the output DC voltage?
thanks
kevin
Yaskawa MRC startup issues. No Power on light on the power supply?
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kevincope04 -
November 10, 2016 at 4:46 PM -
Thread is marked as Resolved.
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kevincope4
The Yaskawa technical support usually gets on the site on the weekend. I bet you they have an answer for you
Thanks for teaching robotics !!!
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Thanks! I am not as familiar with motoman. I've worked on Fanuc and kuka before.
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Kevin,
Is your robot an MRC or MRC II (it makes a difference to the power flow.
No, there is no connection on the CPU, however there are jumpers and connections to be made but this depends on MRC or MRC II.
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It is an MRC.
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Also, I have voltage to the input plug CN03, and i have the Source Light on. I just have no DC output voltage from CN02 or CN01.
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It's probably the jumpers on the MBB02 card. This is the rack the I/O cards plug into. Please make sure TM1, TM2 and TM3 all have a jumper on pins 1 and 2 as per the attached pdf.
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Thanks! I will check them tomorrow.
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I checked my jumpers and all were between 1 and 2 like they should be. My glass fuses are good. can you think of anything else i need to check? If i am understanding correctly, I should be able to turn my 3phase on to the machine and the output from the power supply should energize in this condition?
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Are there any red lights on the power supply? And the voltage you have on CN3 is 220 volts AC between phases?
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My class made a lot of progress today. My advanced kids found some loose connections. We finally got our power lights on after that. Then we got a red 24v alarm. I helped them trace the problem back to the msp02 board in the playback box. I unplugged the cn-1 connector and the alarm clears. You think I have a bad board? I will do some more digging tomorrow.
Thanks for all of your help so far! The kids are loving the real life troubleshooting. -
CN1 is the power into this board. It could be the board or the pendant. Unplug CN2, that goes to the pendant. It could be the pendant or the pendant cable. Also unplug CN5, that's the buttons and lights for play, teach.... If you still have the 24 volt fault with CN2 and CN5 unplugged the short is in the MSP02 board.
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Thank you. That's exactly what I had them do today. I'm going to see about ordering a new board.
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You'll have to go to E-Bay. There are no more "new" boards. This robot was discontinued in 1999. They stopped making parts for MRC in 2005.
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Do the Rev E 0? Numbers need to match? That's the only thing I'm unsure of.
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For this board it shouldn't be a problem. Where is your school?
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Thanks Robodoc. We are in far western Kentucky.
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Hey guys, It's been a while since we've had a chance to work on our robot. We replaced the board discussed earlier and it did nothing for us. I'm thinking the teach pendant is toast. The one we have is a JZNC-MPP20E. Is this interchangeable with a JZNC-MPP21E. I have found more of those on the internet than the 20E's.
Thanks
Kevin -
The MPP20E is non-deadman and the MPP21E has a deadman. This is the switch on the back of the pendant that turns the servo power on in teach. If your controller does not have the deadman circuitry you can use the MPP21E (with deadman) pendant.
Did you unplug CN2 and remove the pendant from the circuit to see if the 24 volt fault goes away?
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the robot has taken a step back. we replaced the board and the teach pendant and now we are back to not having DC output voltage from the Power Supply. The power supply is getting 208V input. We are just getting nothing out.
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