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7 Fault Handling/Diagnostics
7.3
List of faults and warnings
504
Cause
Remedy
Acknowledgement
Stop response
505
Cause
Remedy
Acknowledgement
Stop response
7-658
Measuring circuit error, motor measuring system
The encoder signal level is too low, faulted (incorrect shielding), or the
cable breakage monitoring function has responded.
– Use the original Siemens pre-assembled encoder cables (better
screening)
– Check for sporadic interruptions (loose contact, e.g. when the drag
cable is being moved)
– For toothed-wheel encoders, check the clearance between the
toothed wheel and sensor
– Check the encoder, encoder cables and connectors between the
motor and control module
– Check the screen connection at the front panel of the control module
(top screw)
– Replace the encoder cables or the control module
– Exchange the encoder or motor
POWER ON
parameterizable
Meas.circ.error motor meas.syst.abs.track
1. The motor absolute track (CD track) is monitored for an interrupted
conductor. For optical encoders, the absolute track supports the evalu-
ation of the mechanical position within one motor revolution.
2. For absolute encoders with EnDat interface, this fault displays an
initialization error.
Note:
Additional information on the reason for the fault is included in P1023
(IM diagnostics).
– Incorrect encoder cable type
– Check for sporadic interruptions (loose contact, e.g. when the drag
cable is being moved)
– Remove noise which is coupled in due to inadequate screening of the
cable by replacing the encoder cable
– Incorrect encoder type configured (e.g. ERN instead of EQN)
– Check the encoder, encoder cables and connectors between the
motor and control module
– Replace control module
– Replace encoder
POWER ON
parameterizable
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
E Siemens AG 2005 All Rights Reserved
04.05
01.99
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