6
6.2 Faults and warnings
6-235
E Siemens AG 2013 All Rights Reserved
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
What is the difference between a fault and a warning?
S Faults (refer to Table 6-2)
– A fault causes an appropriate response for the positioning motor.
– Faults must be acknowledged after the fault cause has been re-
moved.
– The motor signals ”fault present” using its diagnostics LED – red
flashing light.
S Warnings (refer to Table 6-2)
– Warnings are automatically deleted after the cause of the fault
has been removed.
Faults indicate to the user positioning motor states where the motor
can only be shut down or switched into a no current condition.
How does the DP master evaluate faults?
1. By reading the status signal ZSW.3 (fault present)
A ”1” signal indicates that there is at least 1 fault.
2. By reading P947 (3B3
hex
)
The parameter value indicates, bit–coded, which faults are present
(refer to Table 6-2 and Chapter 6.2.2).
3. By reading P954 (3BA
hex
) (from SW 1.4)
The parameter value indicates, bit–coded, which supplementary
information is present (refer to Table 6-2 and Chapter 6.2.2).
How are the faults acknowledged?
1. Remove the cause of this fault (refer to Chapter 6.2.2).
2. STW.7 (reset the fault memory) = set 0/1 signal edge.
3. Set the STW.0 (ON/OFF 1) to ”0” and ”1”.
Note
If the status signal ZSW.3 (fault effective) is not ”0”, then the above
points should be repeated for the fault or faults that are still present.
SIMODRIVE POSMO A can only resume normal operation after all of
the faults that are present have been acknowledged.
The faults are described in detail in Chapter 6.2.2.
Difference
between
faults and
warnings?
Faults
6 Fault Handling and Diagnostics
02.9904.0105.03