There are 3 common failures related to the Indramat DDS series drives. They are #60, #61, and when a unit shows nothing on its display. We will take a look at these, the causes and the possible cures. There are many other faults, and we will show a list of those as well. The Indramat DDS drives are very robust units, but will need refurbishment from time to time. It is rare to have one that cannot be rebuilt.
- The most common fault is #61, which is an over-current, short-to-ground fault.
Causes: The fault can be caused by a faulty cable or servo motor. Once you have ruled those out as possible causes, you can isolate the outputs of the drive or the failure in the logic board as the culprits.
Cures: Outputs – replace outputs and firing circuits. Logic – rebuild/repair logic portion of the DDS drive, which include calibration.
2. The second most common fault is #60, bridge fuse.
Causes: Similar to fault #61, #60 fault can be caused by a faulty cable or servo motor. Once you have ruled those out as possible causes, you can isolate the outputs of the drive or the failure in the logic board as the culprits.
Cures: Put more focus on DC power supply side rather than the firing circuits.
3. When unit has nothing on display(failure).
Causes: A power spike sent surge that blew up brain.
Cures: Normal aging on components, unit needs to be rebuilt.
Here is the list from Indramat, that the codes used in this article are listed:
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