Siemens SINUMERIK 840D sl Series Diagnostics Manual page 722

Overview of Alarms
Cause: The power module DC link was not able to be pre-charged within the expected time.
- line supply voltage too low.
- line supply phase fault.
- short-circuit or ground fault in the DC link.
- pre-charging circuit defective.
Fault value (r0949):
Missing internal enable signals, power module (lower 16 bit):
(Inverted bit-coded notation FFFF hex -> all internal enable signals available)
Bit 0: Power supply of the IGBT gating shut down
Bit 1: Reserved
Bit 2: Reserved
Bit 3: Ground fault detected
Bit 4: Peak current intervention
Bit 5: I2t exceeded
Bit 6: Thermal model, overtemperature calculated
Bit 7: (heatsink, gating module, power module) overtemperature measured
Bit 8: Reserved
Bit 9: Overvoltage detected
Bit 10: Power module has completed pre-charging, ready for pulse enable
Bit 11: SH terminal missing
Bit 12: Overcurrent condition detected
Bit 13: Armature short-circuit active
Bit 14: DRIVE-CLiQ fault active
Bit 15: Vce fault detected, transistor de-saturated due to overcurrent/circuit-circuit
Status, power module (upper 16 bit, hexadecimal number):
0: Fault status (wait for OFF and fault acknowledgment)
1: Restart inhibit (wait for OFF)
2: Overvoltage condition detected -> change into the fault state
3: Undervoltage condition detected -> change into the fault state
4: Wait for bypass contactor to open -> change into the fault state
5: Wait for bypass contactor to open -> change into restart inhibit
6: Commissioning
7: Ready for pre-charging
8: Pre-charging started, DC link voltage lower than the minimum switch-on voltage
9: Pre-charging, DC link voltage end of pre-charging still not detected
10: Wait for the end of the de-bounce time of the main contactor after pre-charging has
been completed
11: Pre-charging completed, ready for pulse enable
12: It was detected that the SH terminal was energized at the power module
See also: p0210
Remedy: - check the line supply voltage
- check the line supply.
See also: p0210
230031 <location>Power module: Hardware current limiting, phase U
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 module defective.
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005