Siemens Sinamics V90 Operating Instructions Manual page 395

Fault
F7459: Zero mark not detect-
ed
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
F7460: EPOS: End of refer-
ence cam not found
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7464: EPOS: Traversing
block is inconsistent
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7475: EPOS: Target posi-
tion < start of traversing
range
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7476: EPOS: Target posi-
tion > end of the traversing
range
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7481: EPOS: Axis position <
software limit switch minus
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7482: EPOS: Axis position >
software limit switch plus
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
Cause
After leaving the reference cam, the axis
has traversed the maximum permissible
distance (p2609) between the reference
cam and the zero mark without finding the
zero mark.
During the search for reference, when the
axis reached the zero mark it also reached
the end of the traversing range without
detecting an edge at the binector input
"reference cam".
Maximum traversing range: -2147483648
[LU] ... -2147483647 [LU]
The traversing block does not contain vaild
information.
Alarm value:
Number of the traversing block with invaild
information.
The target position for relative traversing
lies outside the traversing range.
The target position for relative traversing
lies outside the traversing range.
The actual position of the axis is less than
the position of the software limit switch
minus.
The actual position of the axis is greater
than the position of the software limit
switch plus.
11.2 List of faults and alarms
Remedy
Check the encoder regarding zero mark.
•
Check the maximum permissible distance
•
between the reference cam and zero mark
(p2609).
Use an external encoder zero mark (equi-
•
valent zero mark).
See also: p2609 (EPOS search for reference
max distance ref cam and zero mark)
Check the "reference cam" input.
•
Repeat the search for reference.
•
Check the traversing block and where rele-
vant, take into consideration alarms that are
present.
Correct the target position.
Correct the target position.
Correct the target position.
•
Change software limit switch minus (CI:
•
p2580).
Correct the target position.
•
Change software limit switch plus (CI:
•
p2581).
Diagnostics
393