6
6.2 Faults and warnings
6-241
E Siemens AG 2013 All Rights Reserved
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
708 / P947.8 Speed controller at stop
Cause The speed controller is at its limit for more than 200 ms.
The required speed is not reached.
The load or friction is too high or the drive is too small.
The current limit (P28, P16) is set too low.
The drive is defective.
Note:
The fault can be changed-over to a warning using P30 (fault suppression).
Remedy Reduce load.
Increase current limit.
Replace the positioning motor.
Check the drive parameterization.
Acknowledgement Remove cause, set STW.7 = 1/0 and STW.0 = 0/1
Stop response Pulse suppression
709 / P947.9 Bus communications
Cause Bus communications between the master and slave has failed.
The bus cable has been withdrawn or is defective
The EMC faults on the bus cable are too high.
Remedy Check fieldbus.
Acknowledgement Remove cause, set STW.7 = 1/0 and STW.0 = 0/1
Stop response Pulse suppression
710 / P947.10 Hardware watchdog reset
Cause After a restart, after initiating the CPU monitoring, the positioning motor
goes into a fault condition.
Note:
The following applies from SW 1.3: Afterwards the positioning motor is
no longer referenced.
Remedy POSMO A 75W : Replace the positioning motor.
POSMO A 300W : Replace the drive unit.
Acknowledgement Remove cause, set STW.7 = 1/0 and STW.0 = 0/1
Stop response Pulse suppression
6 Fault Handling and Diagnostics
02.9904.0108.06
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