Siemens SIMOVERT MASTERDRIVES Betriebsanleitung Seite 304

Faults and Alarms
Number / Alarm
A138
Axis assignment of roll
feed incorrect
A139
Incorrect
parameterization
PosTrack MotorEnc
A140
Following error in
standstill
A141
Following error in
motion
12-22
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Cause
The NC block contains an axis number which
is defined as a roll feed axis but the axis type
is defined as an incremental or absolute
position encoder (machine data 1 = 1 or 2).
(M7 only, not significant for the F01 technology
option).
The NC block for a roll feed axis type
(machine data 1 = 3) contains:
- No axis number (X, Y, Z...)
- An incorrect axis number
Effect:
NC program execution is inhibited or aborted.
Alarm is tripped only for rotary axis of motor
encoder. The bit width of the product of the
gear denominator (U810.2 * P116.2) must not
be greater than the difference of the 32 bit
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
The following error limit for standstill was
exceeded at 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).
The following error limit for motion was
exceeded during a traversing movement:
-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).
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Counter-measure
-Axis type 1 or 2:The block is not allowed to
contain an axis number which is defined as a
roll feed (M7 only).
-Axis type 3:The axis number of the roll feed
must be specified in every NC block.
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.
6SE7087-6JD50
Operating Instructions SIMOVERT MASTERDRIVES
08.2009
Siemens AG