Siemens SINAMICS V90 Operating Instructions Manual page 282

Diagnostics
12.1 List of faults and alarms
Fault
F7482: EPOS: Axis position >
software limit switch plus
Message class: Applica-
tion/technological function
faulty (17)
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7484: EPOS: Fixed stop
outside the monitoring win-
dow
Message class: Applica-
tion/technological function
faulty (17)
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7485: EPOS: Fixed stop not
reached
Message class: Applica-
tion/technological function
faulty (17)
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7488: EPOS: Relative posi-
tioning not possible
Message class: Applica-
tion/technological function
faulty (17)
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7490: Enable signal with-
drawn while traversing
Message class: Applica-
tion/technological function
faulty (17)
Reaction: OFF1
Acknowledgement:
IMMEDIATELY
282
Cause
The actual position of the axis is greater
than the position of the software limit
switch plus.
In the "fixed stop reached" state, the axis
has moved outside the defined monitoring
window (p2635).
In a traversing block with the task FIXED
STOP, the end position was reached with-
out detecting a fixed stop.
In the mode "direct setpoint input/MDI", for
continuous transfer relative positioning
was selected.
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).
Remedy
Correct the target position.
•
Change software limit switch plus (CI:
•
p2581).
See also: p2580 (EPOS software limit switch
minus), p2582 (EPOS software limit switch
activation)
Check the monitoring window (p2635).
•
Check the mechanical system.
•
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).
Check the control.
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.
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2017, A5E37208830-003