Siemens SINUMERIK 840D Diagnostics Manual page 624

1 Alarms
Remedy:
Program Continuation:
310606
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
310607
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
1-624
• Check encoders, encoder lines and connectors between drive motor and 611D module.
Check for temporary interruptions (loose contact) caused, for example, by movements in
trailing cable. If necessary, replace the motor cable.
• Incorrect cable type
• Controller hardware not suitable for EnDat interface (e.g. control module with EPROM)
Switch control OFF - ON.
Axis %1 drive %2 external valve voltage supply failed
%1 = NC axis number
%2 = Drive number
The external 26.5 V supply is monitored for undervoltage in the closed-loop control.
Check the monitoring criteria:
• Voltage range (average) 26.0 V to 27.0 V
• Ripple factor 240 mVss
• No voltage failures
- Mode group not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
The external 26.5 V supply is monitored for undervoltage in the closed-loop control.
Check the monitoring criteria:
• Voltage range (average) 26.0 V to 27.0 V
• Ripple factor 240 mVss
• No voltage failures
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Axis %1 drive %2 valve not responding
%1 = NC axis number
%2 = Drive number
The valve is not responding to the valve slide setpoint. Cause: valve not connected or
valve has no valve slide checkback signal.
- Mode group not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
• Valve without valve slide checkback signal: Modify MD 5530: reset bit 2
• Check the valve connection.
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
10.04