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Ken, The rpm is .46. Chris

Thanks to all that have provided input into this problem. I have decided to mount a zero speed indicator on the shaft of each conveyor(434.00) which will monitor the movement. I purchased them from maxigard.com if anyone ever needs a solution like this. Thanks again to everyone

Thanks for the input, i spoke to GE/Fuji techs about the torque limit and they say it can't be done with thier unit.

Well here is my problem We have just installed a new 3 belt oven with fuji vfd drives. The conveyor is a large metal belt costing about $75,000. The problem is that belt got jammed, stopped and the drive kept trying to pull it breaking a link and damaging part of the belt. We have fixed the belt and i am trying to figure out a way to protect the belt by monitoring the movement of the belt. If the belt doesnt move it shuts off the drive. I was thinking of either a prox switch which looks for an on and off cycle. I don't think this will work as the drive runs very slow and the time between the links is more than 30 seconds. If this drive pulls the belt for the 30 seconds when it is jammed it will definately tear it up again. I have browsed this site for months and belive i can get the answer here. Thanks in advance Chris Marinello

I currently utilize a radio shack usb to serail adapter and it works on all the micrologix and slc plcs, if you want to use it for panel view you need to purchase a null moden adapter(7.64).

I have a small problem with getting my machine to repeat a sequence if a switch is closed. Basically this is a mcahine which takes a basket of product dips it in a coating then when when a selector switch is on it will spin at a low rpm then stop. It then pulls out of the coating and spins forward at a higher rpm. Right now the program is set so it will spin forward and if there is a switch closed it will spin in reverse. The problem arises at this point. I need it to spin forward again and then reverse again when an input is given. We call this 4 way spinning I have labeled the program to the best of my ability. I got the machine used and we are trying to update it. I guess i am saying that i am not the original author of this program and i am having a tough time figuring out the logic behind some of the logic. Attatched is the program. Thanks in advance. DETLEV.RSS