Diagnostics
11.2 List of faults and alarms
SINAMICS V90, SIMOTICS S-1FL6
394
Operating Instructions, 04/2019, A5E36037884-007
Fault
Cause
Remedy
F7484: Fixed stop outside the
monitoring window
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
In the "fixed stop reached" state, the axis
has moved outside the defined monitoring
window (p2635).
•
Check the monitoring window (p2635).
•
Check the mechanical system.
F7485: Fixed stop not
reached
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
In a traversing block with the task FIXED
STOP, the end position was reached with-
out detecting a fixed stop.
•
Check the traversing block and locate the
target position further into the workpiece.
•
Check the "fixed stop reached" control
signal.
•
If required, reduce the maximum following
error window to detect the fixed stop
(p2634).
F7488: EPOS: Relative posi-
tioning not possible
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
In the mode "direct setpoint input/MDI", for
continuous transfer relative positioning
was selected.
Check the control.
F7490: Enable signal with-
drawn while traversing
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
•
For a standard assignment, another
fault may have occurred as a result of
withdrawing the enable signals.
•
The drive is in the "switching on inhibit-
ed" state (for a standard assignment).
•
Set the enable signals or check the cause
of the fault that first occurred and then re-
sult (for a standard assignment).
•
Check the assignment to enable the basic
positioning function.
F7491: STOP cam minus
reached
Reaction: OFF3
Acknowledgement:
IMMEDIATELY
The STOP cam minus was reached.
For a positive traversing direction, the
STOP cam minus was reached, i.e. the
wiring of the STOP cam is incorrect.
•
Leave the STOP cam minus in the posi-
tive traversing direction and return the ax-
is to the valid traversing range.
•
Check the wiring of the STOP cam.
F7492: STOP cam plus
reached
Reaction: OFF3
Acknowledgement:
IMMEDIATELY
The STOP cam plus was reached.
For a negative traversing direction, the
STOP cam plus was reached, i.e. the
wiring of the STOP cam is incorrect.
•
Leave the STOP cam plus in the negative
traversing direction and return the axis to
the valid traversing range.
•
Check the wiring of the STOP cam.
