Siemens SINUMERIK 840D Diagnostics Manual page 625

10.04
310608
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
310609
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
Axis %1 drive %2 speed controller at limit
%1 = NC axis number
%2 = Drive number
The speed controller output is lying for an impermissibly long time at its limit (MD 5605:
$MD_SPEEDCTRL_LIMIT_TIME and MD 1606: (speed controller limit threshold). The
monitoring system is only active when the speed setpoint is below the speed threshold in
MD 5606: SPEEDCTRL_LIMIT_THRESHOLD (speed controller limit threshold).
- 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.
• Is the drive blocked?
• Is the encoder connected? (check the encoder cable)
• Check the shield connection on the encoder cable
• Encoder defective?
• Check the encoder resolution
• The Uce monitoring circuit has been activated (perform a reset by switching the power
supply off and on again).
• Replace the control module.
• Modify MD 5605: SPEEDCTRL_LIMIT_TIME and MD 5606:
SPEEDCTRL_LIMIT_THRESHOLD in accordance with the mechanical and dynamic fea-
tures of the axis.
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Axis %1 drive %2 encoder cut-off frequency exceeded
%1 = NC axis number
%2 = Drive number
Actual velocity value exceeds encoder limit frequency fg,max = 650kHz
- 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 wrong encoder may be in use.
• Does the number of encoder lines match the setting in MD 5005:
ENC_RESOL_MOTOR (encoder resolution for motor measuring system)?
• Is the encoder cable connected correctly?
• Is the encoder cable shield installed flat?
• Replace the encoder.
• Replace the 611D hydraulic module.
• Modify MD 5605: SPEEDCTRL_LIMIT_TIME and MD 5606:
SPEEDCTRL_LIMIT_THRESHOLD in accordance with the mechanical and dynamic fea-
tures of the axis.
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
1 Alarms
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