Hello experts,
I have a Mitsubishi 1450 Ton Injection Molding Machine which is connected to a Fanuc S-430iL robot. So what's happening is when I turn on my digital outputs to control the molding machine operations like-
1. Clamp Close
2. Ejector Forward
3. Ejector Retract
4. Pull Core
5. Set Core
None of them seems to work with the robot plugged in.
As soon as I disconnect the robot from the molding machine and put the dummy plug in, everything starts running.
Does anyone know what should I be looking for for this kind of error?
It has been like a week we have been trying to figure out what's wrong but no luck so far.
I will send you pictures and electrical drawings related to this if someone out there has any experience with the molding machines and the robot.
DIO not working with the molding machine.
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Atinder Singh -
January 17, 2018 at 5:58 PM -
Thread is marked as Resolved.
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Hi
Was that working two weeks ago ?
What hardware are you using on the robot ? In other words, the wire that goes to valve Clamp Close , where is it coming from ?
That answer well help to know -
Is there any program running in the robot?All the correct outputs are set in the programs?
for example we use 3 signals to block the machine when the robot moves into the mold area:
DO[5: Mould close]=OFF ;
DO[6: Move enable]=OFF ;
DO[12: Out from mould]=OFF ;
All these signals in your application are set correctly?Is this cell worked before?
or there is something wrong with the connection.I'm sure (or hope) the IMM has some diagnostic page where you can monitor the inputs/outputs.If you use euromap, check the documentation. -
Hey moln4r,
So the thing is we have about three Fanuc robots model S-430iL with RJ3 controller same for all three. Two of these robots run like everyday but this one robot hasn't ran for like an year now. The molding machine standalone works daily. So I wrote a program, everything runs good but when we tried to run it with the molding machine, at that time we came to know that none of the outputs of the molding machine are working with respect to the robot.
We just use one output for the clamp to close and then we have a signal from light curtain which tells the molding machine not to close the clamp if the light curtain is broken.
I don't have a lot of knowledge about electrical connections.
Most probably it is a connection problem it's just we are not able to figure it out so far. -
Hey Fabian,
Our electrician has checked all the wiring from A-Z but no good. We have a guy coming from the outside to see the fault, so lets see if he has the magic to fix it. I'll let you guys know if it gets fixed. Fingers crossed.
Tc -
More info needed on this.
When the robot is connected to the machine, nothing moves on the machine?Does the robot works in automatic mode?If you start a simple program on the robot it runs in auto?I mean like a program with 2 positions in it nothing else...
Also is there any alarm on the IMM when the robot plugged in?
Or you can switch it to auto mode just the clamp not close? -
Ok, so when the robot is connected to the machine nothing moves on the machine. I can put the robot in auto, clear the faults and hit cycle start. When this is done robot just stands there waiting for a signal from the molding machine to go inside the molding machine which is DI[13: Molding Machine In Auto Mode]= ON and DO[129: Permit Clamp Close]= OFF and DI[7: Mold Fully Open]= ON. In simple word, the molding machine is not able to cycle with the robot plugged in. It won't even mold a part with the robot plugged into it.
It is very confusing because we are not able to figure out if it is the machine that is not sending signals to the robot or the robot is not sending signals to the machine. Big time man -
is there any kind of signal monitoring on the machine?
Do you see ANY DIs on the robot? Any LEDs on the robot's IO modules? -
And there is no error/alarm message on the machine?It just stands in auto mode and not closing the clamp?Are you using euromap 67?
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No alarms on the molding machine and it is a standard SPI for North America, I guess Euromap 12.
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In this kind of cells where a Fanuc robot works with an IMM the robot is the "master" and the IMM is the "slave" device.In this case it looks like the robot doesn't give permission to the IMM to move.May there is an output in the robot program what is missing, or the prg is ok, and you have a broken connection...where you need to start is the IMM and you need to check what Input is missing.There is already questions from us that the IMM has any kind of i/o screen where you can check what signals are on, or off in the machine.
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Is the robot sending the Cycle Start Signal to the correct terminal on the Molding Machine? If it runs w/o the robot, this means with the robot, it's not seeing the correct signal to even initiate the cycle?
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Got this problem fixed guys. Thank you for your suggestions and help.
I took the I/O module from one of my other robots and tried it on the faulty one and it started working.
Woooohoooo problem solved.