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Tech805, We have checked phase to phase and they seem to be within the 10% window. As for the motors TEFC rated for 100% duty. I am not sure what type bearings they are. The motors come direct from Suigino the mfg. of the drill head. I think some are Bosch. Zogzog, thanks for the tip I...

NwBeaver A few of the machines have Horner PLC's with availble io space. I have considered using several small plc's as well. My issue is most of the machines are controlled by relays. Almost all of my plc's are ethernet enabled which would make this very easy however that is the exception...

I have been assigned the task of hooking up Andon lights on several machines and departments. I need to have two strobes one for maintenance and one for inspector. I am considering using a plc to track there state potentially so the system could be monitored at a central location. What is the...

We have a pretty good understanding on the cause of the motors malfunction. The drill heads over heat by being pushed to hard. The motor runs the spindle however the feed is controlled by air and a hydrocheck. If the operator runs to heavy of a feed the motors stall. But not consistantly and...

Jraef you hit it on the head. My supplier spec. the wrong contactor for me. I am not much of a electrical guy and I let my distributor call out my contactor. But he stood behind his work and is paying for his mistake by refunding the contactor I fried and sending me the correct one free of...

Sorry I should have given you more info, the motors are 3 phase and some are fix speed and some run on a vfd depending on the machine. Thanks, Jason

Itsmoked, I tested this coil through our switches and with a line straight from our power supply. From your last post I manually pressed the contactor to ensure it was making full contact and it was still drawing 4 amps. I will have to call the manufacturer and see if they have any further...

Quit offen that is the case. The motor checks out and they are fine once they cool down. We have checked the temp and what I have seen is about 110 degrees F. I have not checked them lately. But I will mention to them to check them when they see this problem. Thanks

We have several drilling machines that utilize .5 and .75 hp motors running drill heads. After some time we get a stall condition. Our maintenance people pull the motor and say it is smoked and needs to be rewound. We send the motor to our local rebuilder. He puts it on his Hipot tester and...

Hello, I am using a ABB contactor as a Master Control Relay. We wired the unit the same as others we have done but the coil overheated and kicked out the contactor after about 2 mins. I replaced the coil and checked the draw of the coil at 4 amps. Does this seem excessive? I can not find any...

I would look at a Horner PLC model XLE or XLT they have a small display or even touch screen with digital inputs and relay outputs for pretty reasonable price.

I have AB Ultra 3000 used as a spindle drive on a drill head. After some sort of machine fault the Spindle is suppose to stop but currently spins around 2-3 RPM. Could this be caused by a tuning error or what else should I be looking at. I have seen simular problems before but the drive...

Thanks for the tip. While I was waiting I checked over the assembly and found the the servo motor mounts had loosened. Would that also cause the condition I discribed? Thanks for the help. I did check the ball screw that it drives and that moves freely and is well greased.

I have a Allen Bradley Ultra 5000 controlling the motion of a drill head. After a year of intermittent use the drive started to display a E 19 Error code. Which is Excess Position Error. To correct this the book says increase feed forward gain. Since this application has been running for...

I am familur with Ladder logic but do not have much experience with sequencers. Does any body know of a good book that explains how they work? Or sources for any simular info.