SICK FX0-GMOD User Manual

Figure 19: Motion Control FX3-MOC1
1
MS LED (module st
atus)
Encoder selection
WARNING
Ine
ffectiveness of the protective device due to selection of an unsuitable encoder
The target safety-related level may not be achieved in the event of non-compliance.
►
Select a suitable encoder.
►
Take suitable measures against the encoder’s systematic errors and common
causes of error.
Choosing the right encoder is crucial to achieving the desired safety integrity level
(SIL) and performance level (PL). Systematic errors and common cause errors (CCF), in
particular, need to be minimized in this case.
Table 9: Achievable SIL and PL
Use of encoders Possi‐
ble
a
xes
per
FX3-
MOC1
Achievable SIL
(IEC61508,
IEC62061), PL
(ISO13849-1)
1)
Available functions for the detection
of encoder errors
A sine/cosine safety
encoder (e.g. DFS60SPro)
2 SIL2, PLd for
speed monitoring
(including direc‐
tion and stand‐
still monitoring)
•
S
ine/cosine analog voltage moni‐
toring
2)
•
ID code monitoring of the encoder
connection unit to detect a
break in the FX3-MOC1 connect‐
ing cable
3)
(possible, but not
required, as the sine/cosine ana‐
log voltage monitoring can detect
a break in the connecting cable)
A sine/cosine safety
enc
oder (e.g. DFS60SPro)
with
•
Safe reference cam (i.e.
with corresponding SIL
or PL)
•
Position by Reference
function block
•
Reference run after
restart
2 SIL2, PLd for
position monitor‐
ing (including
speed, direction
and standstill
monitoring)
PRODUCT DESCRIPTION 3
8012478/1IG6/2023-02-24 | SICK O P E R A T I N G I N S T R U C T I O N S | Flexi Soft Modular Safety Controller
37
Subject to change without notice

SICK FX0-GMOD Specifications

General

Brand	SICK
Model	FX0-GMOD
Category	Controller
Language	English