Siemens SIMODRIVE 611 universal - Page 671

7
7.3 List of faults and warnings
7-671
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
610 Rotor position identification has failed
Cause if P1075=1 (technique based on saturation)
A rotor position could not be determined from the measurement signals
(motor current), as no significant saturation effects occurred.
Also refer to parameter P1734 for detailed diagnostics.
if P1075=3 (motion-based technique)
1. Current increase too low.
2. Maximum permissible duration exceeded.
3. No clear rotor position found.
Remedy if P1075=1
– Increase current via P1019
– Check armature inductance (P1116) and if required, increase
– Check the connecting cable, motor/drive converter (phase missing)
– Check the motor contactor
– DC link voltage present?
– Check the DC link busbar (check that the screws are tight)
– Use monitoring function in the power section has responded (RESET
by powering off/powering on)
– Replace the power section or control module
if P1075=3
To 1.
– The motor is not correctly connected
– The motor power connection must be checked
To 2.
– Remove disturbing external forces (e.g. axis couplings which are not
released)
– Identification technique must remain stable (P1076 must be reduced)
– Use an encoder with higher resolution
– Improve the encoder mounting (it is not stiff enough)
To 3.
– Remove disturbing external forces (e.g. axis couplings which are not
released)
– The axis must be able to freely move (e.g. the motor rotor may not be
locked)
– Reduce the high axis friction (increase P1019)
Acknowledgement RESET FAULT MEMORY
Stop response parameterizable
7 Fault Handling/Diagnostics
01.99
04.05