Diagnostics
11.2 List of faults and alarms
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
405
Alarm
Cause
Remedy
A7441: LR: Save the position
offset of the absolute encoder
adjustment
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.
Not necessary.
This alarm automatically disappears after the
offset has been saved.
See also: p2525 (LR encoder adjustment
offset)
A7454: LR: Position value
preprocessing does not have
a valid encoder
The parameter configuration of encoder is
incorrect.
Default the drive and re-configure the param-
eters.
A7455: EPOS: Maximum
velocity limited
The maximum velocity (p2571) is too high
to correctly calculate the modulo correc-
tion.
Within the sampling time for positioning,
with the maximum velocity, a maximum of
the half modulo length must be moved
through. p2571 was limited to this value.
Reduce the maximum velocity (p2571).
A7456: EPOS: Setpoint ve-
locity limited
The actual setpoint velocity is greater than
the parameterized maximum velocity and
is therefore limited.
Decrease the actual setpoint velocity.
A7461: EPOS: Reference
point not set
When starting a traversing block/direct
setpoint input, a reference point is not set.
Reference the system (search for reference,
flying referencing, set reference point).
A7469: EPOS: Traversing
block < target position < soft-
ware limit switch minus
In the traversing block the specified abso-
lute target position lies outside the range
limited by the software limit switch minus.
•
Correct the traversing block.
•
Change software limit switch minus
(p2580).
A7470: EPOS: Traversing
block > target position > soft-
ware limit switch plus
In the traversing block the specified abso-
lute target position lies outside the range
limited by the software limit switch plus.
•
Correct the traversing block.
•
Change software limit switch plus (p2581).
A7471: EPOS: Traversing
block target position outside
the modulo range
In the traversing block the target position
lies outside the modulo range.
•
In the traversing block, correct the target
position.
•
Change the modulo range (p29246).
A7472: EPOS: Traversing
block ABS_POS/ABS_NEG
not possible
In the traversing block the positioning
mode ABS_POS or ABS_NEG were pa-
rameterized with the modulo correction not
activated.
Correct the traversing block.
A7473: EPOS: Beginning of
traversing range reached
When traversing, the axis has moved to
the traversing range limit.
Move away in the positive direction.
A7474: EPOS: End of trav-
ersing range reached
When traversing, the axis has moved to
the traversing range limit.
Move away in the negative direction.
A7477: EPOS: Target posi-
tion < software limit switch
minus
In the actual traversing operation, the
target position is less than the software
limit switch minus.
•
Correct the target position.
•
Change software limit switch minus (CI:
p2580).
A7478: EPOS: Target posi-
tion > software limit switch
plus
In the actual traversing operation, the
target position is greater than the software
limit switch plus.
•
Correct the target position.
•
Change software limit switch plus (CI:
p2581).
A7479: EPOS: Software limit
switch minus reached
The axis is at the position of the software
limit switch minus. An active traversing
block was interrupted.
•
Correct the target position.
•
Change software limit switch minus (CI:
p2580).
