Installation manual

Danaher Motion Kollmorgen Troubleshooting
SERVOSTAR
®
S and SERVOSTAR
®
CD Series 94
• Bus OverVoltage: An over-voltage condition shuts down the drive and
displays a lower-case ‘o’ in the status display. This fault will occur
mostly during regen operation where the BUS is raised to higher values
than that produced by the power supply.
• Bus UnderVoltage: An under-voltage condition shuts down the drive
and displays an ‘u’ in the status display. This fault normally occurs
when the incoming line voltage drops out or a fault occurs in the power
supply.
• PowerStage Fault (OverCurrent): Hardware circuitry monitors load
short-circuit, transistor failure, and instantaneous OverCurrent. In
general, toggling the Remote Enable cannot reset a power stage fault.
Power must be cycled. A flashing ‘P’ in the status display indicates this
condition.
• Feedback Loss: Hardware is used to detect a wire-break condition in
encoder based systems or the presence of the Sine and Cosine resolver
feedback signals in resolver based systems. The SERVOSTAR
disables and displays an ‘r’ in the status display when either of these
signals are not present.
• Low-voltage power supply faults: Out of tolerance values on the ± 12
VDC analog supplies will cause an ‘A’ to be displayed and cause the
drive disable.
• OverSpeed fault: Software continuously monitors the actual
(feedback) speed. If the motor speed exceeds the VOSPD limit, a ‘J’
will be displayed and the drive will be disabled. This normally occurs
when there is an improperly tuned system and the load overshoots its
commanded speed.
• No compensator: In case the SERVOSTAR cannot design a
compensator, such as after a RSTVAR command, CLREEPROM, or
any change in the motor or drive parameters, a flashing minus sign (-)
will be displayed and will cause the drive to disable. This display
normally indicates that the drive does not have a compensation file
loaded.