Siemens SINUMERIK 840D Series Diagnostics Manual page 487

11.02
300609
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300610
Parameters:
Definitions:
Reactions:
Remedy:
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SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
Axis %1 drive %2 encoder cut-off frequency exceeded
%1 = NC axis number
%2 = Drive number
Actual speed value exceeds encoder limit frequency fg,max = 650kHz; fg = nist * MD
1005
- Mode group not ready.
- Channel not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
- The NC switches to follow-up mode.
- Alarm display.
- Interface signals are set.
Please inform the authorized personnel/service department.
• The wrong encoder may be in use.
• Correct MD 1005: Does the number of encoder lines match the setting in MD 1005
$MD_ENC_RESOL_MOTOR (encoder resolution for motor measuring system)?
• Is the motor encoder cable connected correctly?
• Is the motor encoder cable shield installed flat?
• Replace the motor (the encoder is defective).
• Check the encoder, encoder cable and shield connection for loose contact or cable
breakage.
• Replace the encoder.
• Replace the 611D control module.
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Axis %1 drive %2 rotor position identification failed
%1 = NC axis number
%2 = Drive number
The rotor position could not be determined from the measurement signals. For detailed
diagnostics see also: MD1734: $MD_DIAG_ROTORPOS_IDENT.
- Mode group not ready.
- Channel not ready.
- Channel not ready.
- NC Start disable in this channel.
- NC Stop on alarm.
- The NC switches to follow-up mode.
- Alarm display.
- Interface signals are set.
Please inform the authorized personnel/service department.
• Increase MD1019: $MD_CURRENT_ROTORPOS_IDENT (current rotor position identi-
fication) and use greater power section, if necessary.
• Check armature inductance MD1116: $MD_ARMATURE_INDUCTANCE and increase
if necessary.
• Check the motor converter connection (phase missing).
• Check the motor protection.
• DC link voltage available?
• Check the DC link connections (check that the screws are tight).
• The Uce monitoring circuit has been activated (perform a reset by switching the power
supply off and on again).
• Replace the 611D power section.
• Replace the control module.
1 Alarms
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