Which products are affected?
Fault eliminated in servo position controller 9300EP as from versions V2.2 and V6.1.
Eliminated function restriction
If a trip reset request was sent to an enabled controller in the mains connecting phase (e.g. controller enable jumpered) DC bus voltages between approx. 285 V and 430 V (see also C0173) could occur and charging resistors could have been destroyed in the controller. When the maximum DC bus voltage of 430 V was reached, a time between 0.2 and 1.3 sec (depending on the controller) must be maintained without trip reset request.
Now, a trip reset request is possible any time.
Possible diagnostics?
None.
Short-term measures/recommendations?
Do not carry out a trip reset during the mains connection phase (wait approx. 5 sec. after the controller was connected to the mains) or inhibit the controller deliberately with controller inhibit.
Evaluation:
A failure can be bypassed safely and easily (see short-term meaures). This function restriction was already eliminated since mid 2001 with version V2.2.
