SICK Flexi Loop User Manual

The shutdown of the safe sensor cascade is indicated on the safety controller by the
LED f
or the input; this LED is off. The shutdown or the error occurred on the first Flexi
Loop node in the direction of propagation on which the MS LED is no longer flashing
green at 1 Hz.
9.3.2 LEDs of the EMSS Flexi Loop nodes
Figure 61: LEDs of the EMSS Flexi Loop nodes
EMSS1/2 MS Meaning
 Gr
een
– Switch contact 1 or 2 on the safety switch closed, no
er
ror

– Switch contact 1 or 2 on the safety switch open, no
error
 Gr
een  Red
Discrepancy or sequence error, related switch con‐
t
act is closed.
 Gr
een  Red
Discrepancy or sequence error, related switch con‐
t
act is open.
Table 30: EMSS LEDs and MS LED of the EMSS Flexi Loop nodes
•
If an error is only indicated on one of the LEDs EMSS1 or EMSS2 (the other is
either illuminated green or is off), then there is a discrepancy error.
•
If an error is indicated on both LEDs EMSS1 and EMSS2, there is a sequence
error.
AUX_IN (8-pin var‐
iant onl
y)
Meaning
 Gr
een
Non-safe input is active.

Non-safe input is inactive.
Table 31: AUX_IN LED of the EMSS Flexi Loop nodes
AUX_OUT (8-pin
v
ariant only)
Meaning
 Gr
een
Non-safe output is active.

Non-safe output is inactive.
Table 32: AUX_OUT LED of the EMSS Flexi Loop nodes
TROUBLESHOOTING 9
8015836/YT10/2016-05-24 | SICK O P E R A T I N G I N S T R U C T I O N S | Flexi Loop
71
Subject to change without notice

SICK Flexi Loop Specifications

General

Brand	SICK
Model	Flexi Loop
Category	Accessories
Language	English