Siemens SINAMICS V90 Operating Instructions Manual page 310

Diagnostics
11.2 List of faults and alarms
Alarm
A7441: LR: Save the position
offset of the absolute encoder
adjustment
A7454: LR: Position value
preprocessing does not have
a valid encoder
A7456: EPOS: Setpoint ve-
locity limited
A7461: EPOS: Reference
point not set
A7469: EPOS: Traversing
block < target position < soft-
ware limit switch minus
A7470: EPOS: Traversing
block > target position > soft-
ware limit switch plus
A7471: EPOS: Traversing
block target position outside
the modulo range
A7472: EPOS: Traversing
block ABS_POS/ABS_NEG
not possible
A7473: EPOS: Beginning of
traversing range reached
A7474: EPOS: End of trav-
ersing range reached
A7477: EPOS: Target posi-
tion < software limit switch
minus
A7478: EPOS: Target posi-
tion > software limit switch
plus
A7479: EPOS: Software limit
switch minus reached
A7480: EPOS: Software limit
switch plus reached
310
Cause
The status of the absolute encoder ad-
justment has changed.
In order to permanently save the deter-
mined position offset (p2525) it must be
saved.
The parameter configuration of encoder is
incorrect.
The actual setpoint velocity is greater than
the parameterized maximum velocity and
is therefore limited.
When starting a traversing block/direct
setpoint input, a reference point is not set.
In the traversing block the specified abso-
lute target position lies outside the range
limited by the software limit switch minus.
In the traversing block the specified abso-
lute target position lies outside the range
limited by the software limit switch plus.
In the traversing block the target position
lies outside the modulo range.
In the traversing block the positioning
mode ABS_POS or ABS_NEG were pa-
rameterized with the modulo correction not
activated.
When traversing, the axis has moved to
the traversing range limit.
When traversing, the axis has moved to
the traversing range limit.
In the actual traversing operation, the
target position is less than the software
limit switch minus.
In the actual traversing operation, the
target position is greater than the software
limit switch plus.
The axis is at the position of the software
limit switch minus. An active traversing
block was interrupted.
The axis is at the position of the software
limit switch plus. An active traversing block
was interrupted.
Remedy
Not necessary. This alarm automatically dis-
appears after the offset has been saved.
Default the drive and re-configure the param-
eters.
Decrease the actual setpoint velocity.
Reference the system (search for reference,
flying referencing, set reference point).
Correct the traversing block.
•
Change software limit switch minus
•
(p2580).
Correct the traversing block.
•
Change software limit switch plus (p2581).
•
In the traversing block, correct the target
•
position.
Change the modulo range (p29246).
•
Correct the traversing block.
Move away in the positive direction.
Move away in the negative direction.
Correct the target position.
•
Change software limit switch minus (CI:
•
p2580).
Correct the target position.
•
Change software limit switch plus (CI:
•
p2581).
Correct the target position.
•
Change software limit switch minus (CI:
•
p2580).
Correct the target position.
•
Change software limit switch plus (CI:
•
p2581).
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 07/2015, 6SL3298-0AV60-0BP0