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Siemens SIMOVERT MASTERDRIVES Operating Instructions Manual Page 100

Motion control, frequency inverter dc-ac compact plus type.
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Faults and Alarms
Number / Alarm
Cause
A141
The following error limit for motion was
exceeded during a traversing movement:
Following error in
motion
-Following error monitoring - in motion
(machine data 15) was entered incorrectly.
-The mechanical system cannot follow the
commands of the position controller.
-Actual position value invalid
-Incorrect optimization of the position controller
or speed controller.
-The mechanical system is sluggish or
blocked.
Effect:
The position control system is deactivated and
the drive decelerates via "deceleration time
during faults" (machine data 43).
A142
The "in position - exact stop window" was not
reached within the time specified in"in position
In position - timer
- timer monitoring":
monitoring
-In position - exact stop window (machine data
17) too small
-In position - timer monitoring (machine data
16) too short
-Position controller or speed controller not
optimized
-Mechanical causes
Effect:
The position control system is deactivated.
A145
The "digital input" with the "disable actual
value" function was actuated while the roll
Actual-value disable
feed was running.
not allowed - axis
standstill
Effect:
The axis movement is stopped via the
deceleration ramp, the "disable actual value"
function is not executed.
A146
A positioning movement was aborted. When
attempting to resume the movement at the
Direction of movement
point of interruption, the roll feed would have
not allowed
had to travel in the opposite direction to reach
the programmed target position. This is
inhibited by the setting of machine data 37
"response after abort".
There are various possible reasons for the
axis crossing the target position when a
positioning movement is aborted:
-Motor coastdown
-The axis was moved intentionally, e.g. in
setup mode.
Effect:
The axis movement is inhibited.
12-22
Counter-measure
-Check and correct the machine data.
-Check the actual position value (speed-
controlled operation); check position encoder,
evaluator module and encoder lead.
-Optimize the position controller or the speed
controller.
-Check the mechanical system.
-Check and correct the machine data.
-Optimize the position controller or speed
controller.
-Check the mechanical system.
The "digital input" for "disable actual value"
can only be actuated when the axis is
stationary.
Move the axis in front of the target position in
setup mode before continuing.
6SE7087-6KP50
Operating Instructions
SIMOVERT MASTERDRIVES
10.99
Siemens AG

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