Siemens Sinumerik 840D sl Diagnostic Manual page 834

Overview of Alarms
SINAMICS-Alarms
Remedy: In general:
- check the line supply voltage at the input terminals.
- check the line supply voltage setting (p0210).
- the following applies to booksize units: Wait (approx. 8 min.) until the pre-charging resistors have
cooled down. For this purpose, preferably disconnect the infeed unit from the line supply.
Re 5):
- carefully observe the permissible pre-charging frequency (refer to the appropriate Equipment Man-
ual).
Re 6):
- check the total capacitance of the DC link and if required, correspondingly reduce the maximum per-
missible DC link capacitance (refer to the appropriate Equipment Manual).
Re 7):
- interconnect the ready for operation signal of the infeed unit (r0863.0) in the enable logic of the drives
connected to this DC link.
Re 8):
- check the connections of the external line contactor. The line contactor must be open during the DC
link fast discharge.
Re 9):
- check the DC link regarding ground fault or short-circuit.
See also: p0210 (Drive unit line supply voltage)
230031 <location>Power unit: Hardware current limiting, phase U
Message -
value:
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: Hardware current limit for phase U responded. The pulsing in this phase is inhibited for one pulse
period.
- closed-loop control is incorrectly parameterized.
- fault in the motor or in the power cables.
- the power cables exceed the maximum permissible length.
- motor load too high
- power unit defective.
Note:
Alarm A30031 is always output if the hardware current limit for phase U, V or W on a Power Module
responds.
Remedy: - check the motor data.
- check the motor circuit configuration (star-delta).
- check the motor load.
- check the power cable connections.
- check the power cables for short-circuit or ground fault.
- check the length of the power cables.
230032 <location>Power unit: Hardware current limiting, phase V
Message -
value:
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: Hardware current limit for phase V responded. The pulsing in this phase is inhibited for one pulse
period.
- closed-loop control is incorrectly parameterized.
- fault in the motor or in the power cables.
- the power cables exceed the maximum permissible length.
- motor load too high
- power unit defective.
Note:
Alarm A30031 is always output if the hardware current limit for phase U, V or W on a Power Module
responds.
2-834
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG 2009 All Rights Reserved
03/2009