Siemens SIMOTICS S-1FL6 Operating Instructions Manual page 266

Diagnostics
12.2 List of faults and alarms
Fault
F7493: LR: Overflow of the
value range for position actu-
al value
Message class: Application /
technological function faulted
(17)
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7575: Drive: Motor encoder
not ready
Message class: Posi-
tion/speed actual value incor-
rect or not available (11)
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
F7599: Encoder 1: Adjust-
ment not possible
Message class: Error in the
parameterization / configura-
tion / commissioning proce-
dure (18)
Reaction: OFF1 (NONE,
OFF2, OFF3)
Acknowledgement:
IMMEDIATELY
266
Cause
The value range (-2147483648 ...
2147483647) for the position actual value
representation was exceeded.
When the overflow occurs, the "refer-
enced" or "adjustment absolute measuring
system" status is reset.
The position actual value (r2521) has
•
exceeded the value range.
The encoder position actual value has
•
exceeded the value range.
The maximum encoder value times the
•
factor to convert the absolute position
from increments to length units (LU)
has exceeded the value range for dis-
playing the position actual value.
The motor encoder signals that it is not
ready.
Initialization of motor encoder was
•
unsuccessful.
The function "parking encoder" is ac-
•
tive (encoder control word G1_STW.14
= 1).
The maximum encoder value times the
factor to convert the absolute position from
increments to length units (LU) has ex-
ceeded the value range (-2147483648 ...
2147483647) for displaying the position
actual value.
Remedy
If required, reduce the traversing range or
position resolution p29247.
Note for case = 3:
If the value for the maximum possible abso-
lute position (LU) is greater than 4294967296,
then it is not possible to make an adjustment
due to an overflow.
For rotary encoders, the maximum possible
absolute position (LU) is calculated as fol-
lows:
Motor encoder with position tracking:
EPOS: p29247 * p29244
Motor encoder without position tracking:
For multiturn encoders:
•
EPOS: p29247 * p29248 * 4096 / p29249
For singleturn encoders:
•
EPOS: p29247 * p29248 / p29249
Evaluate other queued faults via motor en-
coder.
If the value for the maximum possible abso-
lute position (LU) is greater than 4294967296,
then it is not possible to make an adjustment
due to an overflow.
For rotary encoders, the maximum possible
absolute position (LU) is calculated as fol-
lows:
Motor encoder with position tracking:
EPOS: p29247 * p29244
Motor encoder without position tracking:
For multiturn encoders:
•
EPOS: p29247 * p29248 * 4096 / p29249
For singleturn encoders:
•
EPOS: p29247 * p29248 / p29249
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 09/2016, A5E37208830-002