| Articles of interest:
Repair Tips: When our engineers and technicians are working on a repair in the field on any form of industrial electronic equipment there is a general rule we follow.
Whenever possible fix only one problem and one section at a time. That way if a new problem is introduced you know when and where it happened.
We have seen many technicians work on more then one area and make several changes and then when they bring up their machine a new and more menacing problem has
occurred.
When you make only one change at a time if a new problem occurs you know where to find the problem. If you try to reinvent the wheel all at once you may have a very hard time finding the problem.
By working on a problem this way you go through the machine step by step making sure to catch any secondary problem as well saving the customer from additional down time.
If you are working on a large retrofit job and have questions contact Bill Kegley or Craig Gaulden or Terrence Harris to help guide you. All three of these
men have extensive experience in the field in industrial electronic retrofit jobs. So if you have a system that is down and you are told the parts to get you back
up and running are obsolete Specialized Electronics can find a modern day solution and retrofit out your old parts and get your line back up and running.
When troubleshooting an Industrial system and you find a bad AC
or DC drive check the output section for shorts or opens. If your
output section has been damaged make sure to use a megger on your
motor to make sure the motor did not short causing the drive to go
bad. At Specialized Electronic Services we have seen many AC
drives and DC drives go bad due to a motor shorting out. On DC
motors make sure the Armature is not shorted to ground or to the
field. On the field check the field resistance and look for bad
brushes as well as Meg the field to ground and to the Armature. On
AC motors check all three phases one at a time to ground with a
megger as well as check for phase to phase shorts. We have had
more the one customer get a drive repaired and put it back in the
system and have it fail on start up due to a bad motor they did
not check out.
Specialized Electronic Services
recently did a large retrofit job removing some obsolete Square D
Omegapak AC Drives and replaced them with some Square D Altivar
ATV61 series AC drives. The original VFD units were in factory
made buckets and we pulled out the old VFD units and had the new
units dropped into the existing bucket saving the customer a lot
of money by not having to replace the entire bucket. The job was
done for the City of Greenville in a water treatment facility and
if you have a need for a retrofit job in your facility call us to
see what we can do to retrofit out your obsolete equipment.
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