Error reg‐
ister
Erro
r bit
Prod‐
uct
com‐
patibil‐
ity
Notifica‐
tion
Severity Persis‐
tence p-
perma‐
nent, np-
not per‐
manent)
Description Required error handling
ENC_ST0
(adr. 40h)
5 All Position
Vector
Length
Error
Critical np The Vector Length of the sam‐
pled and measured Sin-Cos
signals has exceeded its
boundaries.
Possible causes: HW or sup‐
ply faults, mechanical shocks.
When this error occurs, the IP
Core advances the fast position in
linear fashion, by turning its esti‐
mator on (estimator_on = 1), until
valid values are present again.
Dependent upon the application,
one or more vector length errors
in succession can be tolerated.
The tolerable number of errors
can be determined from a calcu‐
lation of the maximum deviations
in each occurring error.
Recommendation: monitor
(count) the occurrence of this
error.
If the maximum tolerable number
of errors is exceeded, the drive
system must be placed in a safe
state, meaning a critical severity.
If necessary, the safe position
can be used as an alternative to
position measurement, if this
error arises for the fast position.
In this case the significantly
slower refresh cycle of the safe
position must be considered.
If the error persists, there is prob‐
ably a general hardware or
mechanical failure. Inform cus‐
tomer service.
4 EKx36,
EFx50,
EDx35
Position
Tracking
Filter
Error
Minor np The sine/cosine-signals got a
big distortion and the signal
tracking (interpolation) got
lost.
Occurs, when check is
enabled and tracking is out of
limit.
Not considered safety rele‐
vant.
Affecting only Safety Channel
1.
No action required.
Encoder recovers automatically.
EEx37 Plausibil‐
ity Error
Critical p Potential cause: faults affect‐
ing the sensor, the analog
input chain, the excitation-sig‐
nals. Also possible: sensor-
signal distortion due to elec‐
trical-burst or mechanical
shock.
The sensor-signal behavior is
not as expected: plausibility
result is greater than the
allowed threshold.
Will lead to a VPOS-error.
The drive system must be placed
in a safe condition.
Action: SW reset of the encoder.
7 CENTRAL FUNCTIONS
78
T E C H N I C A L I N F O R M A T I O N | HIPERFACE DSL
®
8017595/ZTW6/2018-01-15 | SICK
Subject to change without notice
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