Siemens SINUMERIK 840D Diagnostics Manual page 561

10.04
Remedy:
Program Continuation:
300610
Parameters:
Definitions:
Reactions:
Remedy:
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
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
If P1075=1 (procedure based on saturation)
The rotor position could not be determined from the measurement signals (motor current),
as significant saturation effects did not occur.
For detailed diagnostics see also parameter P1734.
If P1075=3 (procedure based on movement)
1. Power increase too small.
2. Max permissible time exceeded.
3. No clear rotor position found.
- 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.
Please inform the authorized personnel/service department.
• If P1075=1
• Increase current via P1019
• Check armature inductance (P1116) 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 in the power section has been activated (perform a reset by
switching the power supply off and on again).
• Replace the power section or closed-loop control module.
• If P1075=3
• Re 1.
• The motor was not properly connected.
• The power connection of the motor must be checked.
• Re 2.
• Remove disturbing external forces (e.g. axis couplings not released)
• Identification procedure must remain stable (P1076 must be reduced)
1 Alarms
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