Siemens CU240S DP-F - F00072 USS Setpoint Fault; F00073 Control Panel setpoint fault; F00080 AI lost Input Signal; F00085 External Fault

Faults and Alarms
List of Fault and Alarm messages
3-388
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
F00072 USS Setpoint Fault
Reaction: OFF 2 (OFF 3)
Acknowledge: Quit fault eg. via DI2
Cause: No setpoint values from USS during telegram off time
Remedy: Check USS master
F00073 Control Panel setpoint fault
Reaction: OFF 2 (OFF 3)
Acknowledge: Quit fault eg. via DI2
Cause: No setpoint values from Control Panel during telegram off time
Remedy: • Check and improve - if necesarry - the value in p3984
• Acknowledge fault
• if fault persists, change inverter control unit
F00080 AI lost Input Signal
Reaction: OFF 2 (OFF 3)
Acknowledge: Quit fault eg. via DI2
Cause: • Broken wire
• Signal out of limits
Remedy:
F00085 External Fault
Reaction: OFF 2 (OFF 3)
Acknowledge: Quit fault eg. via DI2
Cause: External fault triggered via command input via control word 2, bit 13
Remedy: • Check P2106.
• Disable control word 2 bit 13 as command source.
• Disable terminal input for fault trigger.
F00090 Encoder feedback loss
Reaction: OFF 2
Acknowledge: Quit fault eg. via DI2
Cause: Signal from Encoder lost (check fault value r0949):
• r0949 = 0: Encoder signal lost.
• r0949 = 1: Encoder loss detected due to sudden speed change (i.e. speed change detected on encoder in a
single scan > value in P0492).
• r0949 = 2: Encoder signal lost whilst running at low speed.
• r0949 = 5: Encoder not configured in p0400, but required for sensored control (p1300 = 21 or 23).
• r0949 = 6: Encoder not found, but configured in p0400.
• r0949 = 7: Encoder loss detected due to motor stalled .
Remedy: Stop the inverter.
• r0949 = 2, Increase value of p0494 or reduce value of p1120 and p1121.
• r0949 = 5, select encoder type via p0400.
• r0949 = 5, select SLVC mode (p1300 = 20 or 22).
• r0949 = 7, select SLVC mode (p1300 = 20 or 22).
• Check connections between encoder and inverter.
• Check that encoder not faulty (select p1300 = 0, run at fixed speed, check encoder feedback signal in r0061)
• Increase encoder loss threshold in p0492.