Okuma Spindle Drive Mysteriously Stops Working

Okuma drive repairsDid you ever think something as simple as a fan could hold up the completion of a huge order? No one at this major U.S. aviation manufacturer saw this coming as work on the order had been humming along smoothly. Until it wasn’t.

Our customer carefully tested the boards in the failing Okuma SDU-600W spindle drive by moving them to other machines fearing they were fried, but they worked. The problem “NM still not matching tach speed” persists and the project is stopped. What now?

After carefully crating the down drive, the manufacturer shipped the 100 lb. machine to ACS Industrial Services for a free electronics repair evaluation. Still worried, they request it be changed to a rush after it had already arrived at ACS. No problem for ACS…this is not uncommon and we really understand as the panic level can ratchet up with production deadlines looming.

Of course, it’s never as simple as “just a fan”. After evaluating the drive our tech team discovers that the big, evil problem holding up production is primarily a bad fan causing overheating, along with a fair bit of grease and dirt gumming up the works. The team replaces the bad cooling fan; cleans up the troubling grease and dirt; replaces some aging components; retests wiring connections, gate circuits, SCRs and the contactor. The whole unit is powered up and tested successfully.

Mystery solved and production is once again humming along. On to the next emergency!

Four Easy Ways To Keep Your Motor Up and Running

get servo motor repairsDid you know that more than 70% of  the U.S.  industrial electricity consumption involves motor-driven systems used mostly for pumps, fans, blower systems, and air compression?  That’s a lot of motors and a lot of motor repair needs.

You can avoid motor problems by implementing these simple strategies:

  1. Buy the right motor for your application.  Make sure your motor(s) can handle 3.1 times the line voltage at a 0.1 microsecond rise time.  This is not the time to be a penny pincher.
  2. Define your parameters .  This avoids overheating in constant-torque applications. At too low a speed, a TEFC motor will overheat.
  3. Use insulated bearings or shaft ground bushings.  If the VFD is run often at a single speed, arcing through the bearings in the same place can deteriorate them.
  4. Minimize the distance from the drive to the motor.

And of course,as I always say, avoid the industrial axis of evil:  Heat, Dirt, and Moisture.  You can think of this trio of evil as The Joker, The Penguin, and The Ridler causing mayhem in your shop.

Batman would not allow heat, dirt, or moisture to enter the bat cave and neither should you!  If he did, he would need servo motor repair and we would be most happy to provide the industrial electronics repair services necessary.

Varian Circuit Board Repair

Varian03-930210-01  RepairsEvery week…no, no, make that every DAY we get interesting items in for repair.  They are causing trouble for the various industrial plants, offices, or wherever they came out of.  This week’s Troublemaker:  a Varian circuit board 03-930210-01.  The defective board (pictured) comes out of a Varian Saturn 2000 MS power suppy  located in a plant in Liechtenstein- problem was, it wasn’t supplying any power causing a hold-up in production.   In case you didn’t know, Liechtenstein is located in central Europe between Austria and Switzerland.

The European plant needed electronics repair fast and they couldn’t find it in Liechtenstein or anywhere nearby.   They contacted ACS Industrial and we were able to turn this around and ship it back repaired to Liechtenstein in just 8 days.  Doesn’t matter where you are, we will jump through hoops to help you out!  Do you need electronics repair?  Call our helpful customer service team at 800-605-6419 or go straight to our website to fill out a Free Repair Evaluation form at www.acsindustrial.com.