Unsafe inputs and outputs also make it possible to evaluate certain situations (e.g. con‐
tamination) on the monitored system or to trigger functions (e.g. illumination of lamps
and activation of door locking devices).
Special features
•
up to 32 Flexi Loop nodes per safe sensor cascade
•
up to 100 m between Flexi Loop nodes and up to 3,200 m total length of the safe
sensor cascade
•
up to 10 m cable length between the Flexi Loop nodes and the devices connected
•
optional status indication via DIAG Flexi Loop accessory
•
optional power supply by means of PWRI power supply accessory
•
enclosure rating IP 65 and IP 67 to EN 60529
Connection to safety controllers:
•
Flexi Soft safety controller
•
Flexi Classic safety controller
•
up to 8 safe sensor cascades on one Flexi Soft safety controller
•
up to 48 safe sensor cascades on one Flexi Classic safety controller
3.1.1
System requirements
Flexi Soft safety controller
The safe sensor cascade is connected directly to a Flexi Soft safety controller extension
module. The following prerequisites apply:
•
one main module
°
FX3-CPUx with firmware V3.xx or higher
•
one or more expansion modules
°
FX3-XTIO with firmware V3.xx or higher
°
FX3-XTDI with firmware V3.xx or higher
°
FX3-XTDS with firmware V3.xx or higher
Flexi Classic safety controller
The safe sensor cascade is connected to the main module or a Flexi Classic safety con‐
troller extension module with a Flexi Loop MSTR accessory. The following prerequisites
apply:
•
one main module
°
UE410-MU version 13.45 or higher
•
one Flexi Loop MSTR1 or MSTR2 accessory
•
one or more extension modules (optional)
°
UE410-XU version 13.45 or higher
°
UE410-8DI version 13.45 or higher
3.1.2
Safety by means of Flexi Loop
•
Performance level up to PL e
°
dependent on the performance level of the overall application
°
independent of the number of Flexi Loop nodes and thus the number of sen‐
sors / switches
°
independent of whether the sensors / switches are directly connected to the
safety controller or to the safe sensor cascade
•
one cut-off path; the status of this path is represented in the Flexi Soft logic by
means of a single safe bit. This feature permits quick, safe shutdown.
•
no error masking
3
PRODUCT DESCRIPTION
12
O P E R A T I N G I N S T R U C T I O N S | Flexi Loop
8015836/YT10/2016-05-24 | SICK
Subject to change without notice