6/7/2022 3:44 PM | |
Joined: 10/11/2006 Last visit: 9/18/2024 Posts: 5906 Rating: (804)
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Hello, F30027 Power unit: Precharging DC link time monitoring Cause: The power unit DC link was not able to be precharged within the expected time. 1) There is no line supply voltage connected. 2) The line contactor/line side switch has not been closed. 3) The line supply voltage is too low. 4) Line supply voltage incorrectly set (p0210). 5) The precharging resistors are overheated as there were too many precharging operations per time unit. 6) The precharging resistors are overheated as the DC link capacitance is too high. 7) The precharging resistors are overheated because when there is no "ready for operation" (r0863.0) of the infeed unit, power is taken from the DC link. 8) The precharging resistors are overheated as the line contactor was closed during the DC link fast discharge through the Braking Module. 9) The DC link has either a ground fault or a short-circuit. 10) The precharging circuit is possibly defective (only for chassis units). 11) Infeed is defective and/or fuse has ruptured in the Motor Module (only Booksize units). Fault value (r0949, interpret binary): yyyyxxxx hex: yyyy = power unit state 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 bridging contactor to open -> change into the fault state. 5: Wait for bridging contactor to open -> change into restart inhibit. 6: Wait for bypass contactor to open 7: Commissioning. 8: Ready for precharging. 9: Precharging started, DC link voltage lower than the minimum switch-on voltage 10: Precharging, DC link voltage end of precharging still not detected 11: Wait for the end of the de-bounce time of the main contactor after precharging has been completed. 12: Precharging completed, ready for pulse enable. 13: It was detected that the STO terminal was energized at the power unit xxxx = Missing internal enable signals, power unit (inverted bit-coded, FFFF hex -> all internal enable signals available) Bit 0: Power supply of the IGBT gating shut down. Bit 1: Ground fault detected. Bit 2: Peak current intervention. Bit 3: I2t exceeded. Bit 4. Thermal model overtemperature calculated. Bit 5: (heat sink, gating module, power unit) overtemperature measured. Bit 6: Reserved. Bit 7: Overvoltage detected. Bit 8: Power unit has completed precharging, ready for pulse enable. Bit 9: STO terminal missing. Bit 10: Overcurrent detected. Bit 11: Armature short-circuit active. Bit 12: DRIVE-CLiQ fault active. Bit 13: Vce fault detected, transistor de-saturated due to overcurrent/short-circuit. Bit 14: Undervoltage detected. See also: p0210 (Drive unit line supply voltage) Remedy: In general: - check the line supply voltage at the input terminals. - check the line supply voltage setting (p0210). For booksize drive units, the following applies: - wait (approx. 8 minutes) until the precharging resistors have cooled down. For this purpose, preferably disconnect the infeed unit from the line supply. For 5): - carefully observe the permissible precharging frequency (refer to the appropriate Manual). For 6): - check the total capacitance of the DC link and reduce in accordance with the maximum permissible DC link capacitance if necessary (refer to the appropriate Manual). For 7): - interconnect the ready-for-operation signal from the infeed unit (r0863.0) in the enable logic of the drives connected to this DC link For 8): - check the connections of the external line contactor. The line contactor must be open during DC link fast discharge. For 9): - check the DC link for ground faults or short circuits. For 11): - check the DC link voltage of the infeed (r0070) and Motor Modules (r0070). If the DC link voltage generated by the infeed (or external) is not displayed for the Motor Modules (r0070), then a fuse has ruptured in the Motor Module. See also: p0210 (Drive unit line supply voltage) 4.2 List of faults and alarms https://support.industry.siemens.com/cs/de/en/view/109781807 |
With best regards, |
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