Siemens Simovert Masterdrives Compendium page 1509

Number / Alarm Cause
A139 Alarm is tripped only for rotary axis of motor
encoder. The bit width of the product of the
Incorrect gear denominator (U810.2 * P116.2) must not
parameterization be greater than the difference of the 32 bit
PosTrack MotorEnc data width of the flipflop and the multiturn
resolution of the encoder. Example: Torque
motor with EQN1325
MT: Multiturn resolution = 12
P116: 2/7
U810.2max = 2^(32 - MT)/P116.2
U810.2max = 149796
A140 The following error limit for standstill was
exceeded at standstill:
Following error in
standstill - Following error monitoring - at standstill
(machine data 14) was entered incorrectly.
- The value entered for "in position - exact stop
window" (machine data 17) is greater than the
value in "following error monitoring - at
standstill" (machine data 14).
- The axis was pushed out of position
mechanically.
Effect:
The position control system is deactivated and
the axis decelerates via "deceleration time
during errors" (machine data 43).
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.
22
Counter-measure
In accordance with the adjacent formula
reduce the gear denominator of P116 and/or
U810 respectively.
- Check and correct the machine data.
- Optimize the speed/current controller,
- Rectify mechanical problem.
- 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.
6SE7087-6QX70 (Version AL)
Compendium Motion Control
03.2010
Siemens AG
SIMOVERT MASTERDRIVES