Siemens SINUMERIK 840D sl Series Diagnostics Manual page 717

08/2005
Cause: The power module has detected an overcurrent condition.
- closed-loop control is incorrectly parameterized.
- motor has a short-circuit or fault to ground (frame).
- V/f operation: Up ramp set too short.
- V/f operation: Rated motor current is significantly greater than that of the motor module.
- infeed: High discharge and post-charging current for line supply voltage interruptions.
- infeed: High post-charging currents for overload when motoring and DC link voltage dip.
- infeed: Short-circuit currents at power-on due to the missing commutating reactor.
- power cables are not correctly connected.
- power cables exceed the maximum permissible length.
- power module defective.
Fault value (r0949):
Bit 0: Phase U.
Bit 1: Phase V.
Bit 2: Phase W.
Remedy: - check the motor data - if required, carry-out commissioning.
- check the motor circuit configuration (star-delta).
- V/f operation: Increase the up ramp.
- V/f operation: Check the assignment of the rated currents of the motor and motor module.
- infeed: Check the line supply quality.
- infeed: Reduce the load when motoring.
- infeed: Correct connection of the line commutating reactor.
- check the power cable connections.
- check the power cables for short-circuit or ground fault.
- check the length of the power cables.
- replace power module.
230002 <location>Power module: DC link overvoltage
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The power module has detected an overvoltage condition in the DC link.
- motor regenerates too much energy.
- line supply voltage too high.
Fault value (r0949, decimal):
DC link voltage [1 bit = 100 mV].
For SINAMICS GM/SM, the following applies:
Fault value (r0949, decimal):
64: Overvoltage in the negative partial DC link (VdcP)
128: Overvoltage in the positive partial DC link (VdcN)
192: Overvoltage in both partial -DC links
Remedy: - increase the ramp-down time.
- activate the DC link voltage controller.
- use a brake resistor or active line module.
- increase the current limit of the infeed or use a larger module (for the active line module).
- check the line supply voltage.
See also: p0210, p1240
230003 <location>Power module: DC link undervoltage
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The power module has detected an undervoltage condition in the DC link.
- line supply failure
- line supply voltage below the permissible value.
- line supply infeed failed or faulted.
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
2-717