6.2 Faults And Warnings - Siemens SIMODRIVE POSMO A User Manual

6 Fault Handling and Diagnostics

6.2 Faults and warnings

Fault suppression
Warnings
6-236
Fault suppression should only be used for start–up purposes or for spe-
cial traversing programs. When fault suppression(s) are active, the cor-
rect program execution must be monitored by the higher–level control.
S
"Speed controller at endstop" fault suppression
The fault is converted to a warning.
This fault suppression should only be used for the function "travel to
fixed stop".
If this fault suppression is used in other traversing programs, the
appearance of the warning "Speed controller at endstop" must be
handled by the higher–level control. In addition, the bit of the status
word "Position setpoint reached" (ZSW.10) must be evaluated to
ensure that a target position was reached correctly despite the oc-
currence of warnings.
S
"Undervoltage" fault suppression
This fault suppression serves to suppress a fault suppression upon
switching on the drive if the load power supply is connected sepa-
rately and is switched on only after the electronics power supply.
The fault suppression must be deactivated before starting a travers-
ing movement.
If a voltage dip occurs during a positioning instruction while the fault
"Load power supply undervoltage" is suppressed, this positioning
instruction is aborted.
Warnings indicate to the user motor statues that do not necessarily
mean that operation must be interrupted.
How does the DP master evaluate warnings?
1. By reading the status signal ZSW.7 (warning effective)
A "1" signal indicates that there is at least 1 warning present.
2. By reading P953 (3B9
The parameter value indicates, bit–coded, which warnings are pres-
ent (refer to Table 6-2 and Chapter 6.2.2).
3. By reading P954 (3BA
The parameter value indicates, bit–coded, which supplementary
information is present (refer to Table 6-2 and Chapter 6.2.2).
Note
If the status signal ZSW.7 (warning effective) is not "0", then the above
points must be repeated for the warning or warnings that are still
present.
Warnings are described in detail in Chapter 6.2.2.
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
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