Gentleman,
I had a drive failure. The drive is an older Parker SSD. Now the question is simple yet complicated. Apparently one of the SCR's failed, it was showing 0 ohms to ground which in turn took out a semi-conductor fuse on the input side of the drive.

As it so happens, we had one in stock and it is changed easily with a couple of phillips head screws.

Now comes the question about fusing. I ordered some semi-conductor fuse replacements because we had none in stock. In the meantime, can I install a time delay fuse that is slightly smaller in amperage? I have an old obsolete fuse that physically fits. The semi-conductor fuses are 125 amps, and this time delay fuse is 100 amps.

I am pretty certain the bad SCR is what caused the fuse to blow in the first place. Machine is down but needs to be up. So smaller amp time delay for the rest of the day?? Or wait it out and use the proper semi-conductor fuses when they arrive?

Hope you like the pic, I had some time to kill...
thanks!

Hello All,
I have a problem with a DC590+ DRV Series DC Drive that powers a 100 HP vintage DC Westinghouse Motor. These are the large yellow and grey drives sometimes called SSD drives.

This thing was doing fine. It is a somewhat fresh installation, maybe less than 6 months old. All of a sudden, the motor slows to a halt and I get an alarm on the Parker drive screen.

The alarm is SEQ PRE READY Unfortunately, one of the other guys cleared from the screen before I took the picture.

Can anyone point me in the right direction. I am going to contact Parker support as well. I need to get this motor back on the road asap.

Thanks,
Keith

Is anyone familiar with Kilotron induction heaters? I'm looking for information on these old induction heaters.



Specifically trying to find Kilotron induction heater schematics. I have experienced electrical issues with our unit recently and haven't been able to find any info at all. Of course, our Kilotron manuals have gone missing. I think it is model 5KA-17, I'll have to double check on the model.

What makes matters worse, is that problems are intermittent. Also, I can't seem to find any info on the company itself. They just disappeared.