Siemens Sinamics V90 Operating Instructions Manual page 397

Fault
F7493: LR: Overflow of the
value range for position actu-
al value
Reaction: OFF1 (OFF2,
OFF3)
Acknowledgement:
IMMEDIATELY
F7599: Encoder 1: Adjust-
ment not possible
Reaction: OFF1 (NONE,
OFF2, OFF3)
Acknowledgement:
IMMEDIATELY
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
Cause
The value range (-2147483648 ...
2147483647) for the position actual value
representation was exceeded. When the
overflow occurs, the "referenced" or "ad-
justment 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 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.
11.2 List of faults and alarms
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:
IPos: p29247 * p29244
•
PTI: 1048576 * p29012[X] * p29244
•
/ p29013
Motor encoder without position tracking:
For multiturn encoders:
•
– IPos: p29247 * p29248 * 4096
/ p29249
– PTI: 1048576 * p29012[X] * 4096
/ p29013
For singleturn encoders:
•
– IPos: p29247 * p29248 / p29249
– PTI: 1048576 * p29012[X] / p29013
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:
IPos: p29247 * p29244
•
PTI: 1048576 * p29012[X] * p29244
•
/ p29013
Motor encoder without position tracking:
For multiturn encoders:
•
– IPos: p29247 * p29248 * 4096
/ p29249
– PTI: 1048576 * p29012[X] * 4096
/ p29013
For singleturn encoders:
•
– IPos: p29247 * p29248 / p29249
– PTI: 1048576 * p29012[X] / p29013
Diagnostics
395