Figure 3: Subdivision of the safe sensor cascade
1
Segment
2
Section
3
String
4
Safety controller
The Flexi Loop safe sensor cascade has a line topology. After the last Flexi Loop node
the cascade must always be terminated using a FLT-TERM00001 terminator.
NOTE
The terminator must be connected directly to the Flexi Loop node, it is not allowed to be
connected via a cable.
Power supply and diagnostic accessories can be installed between the Flexi Loop
nodes (
see "Supply of power", page 14
Within Flexi Loop, the connection is made with standard 5-pin unshielded cables with A-
coded M12 male connectors and M12 female connectors. Cables up to 100 m in
length can be laid between the individual Flexi Loop nodes.
Sensors or switches are connected with 5-pin or 8-pin unshielded cables with M12
male connectors (
see "Pre-assembled cables", page 95
). A series of SICK sensors or
switches can be connected with 1:1 cables (male/female connector).
The Flexi Loop YCON1 and YCON2 adapters can be used to decouple the non-safe
inputs and outputs of the 8-pin Flexi Loop EMSS nodes and the 8-pin Flexi Loop OSSD
nodes.
•
The cables for the sensors or switches must not exceed a length of 10 m
1)
.
•
You must consider the pin assignment of the individual Flexi Loop nodes and the
accessories when making the connection (
3.1.4
Supply of power
DANGER
Always supply the OSSD devices connected with power via the OSSD female connector
on the Flexi Loop node!
Never supply an OSSD device connected with power directly from a separate power sup‐
ply. If several power supplies in a Flexi Loop section are connected in parallel, in case of
a ground fault overcurrent and a cable fire may occur.
Always use the power supply accessory to connect additional power supplies.
1)
Including any connecting cables that might be used for the Flexi Loop YCON1 and YCON2 adapters.
3
PRODUCT DESCRIPTION
14
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