Further topics
•
"Device connection (M12, 5-pin)", page 24
4.4.3.2
Safe series connection with T-connector (without diagnostics)
Important information
DANGER
Bypassing the protective device
The dangerous state may not be stopped in the event of non-compliance.
If a safe series connection is created with T-connectors, the connecting cable must be
mounted so that individual T-connectors (and therefore a safety switch) cannot be eas‐
ily jumpered.
NOTE
If safety switches are connected in series via T-connectors, the application diagnostic
output cannot be evaluated.
NOTE
If the series connection is not made using special T-connectors and end connectors,
ensure that inputs In 1 and In 2 are connected to constant 24 V DC at the first safety
switch of the series connection.
Prerequisites
•
Safety switch with male connector, M12, 8-pin
Construction
The safe series connection can be implemented using special T-connectors and an end
connector.
Figure 6: Safe series connection using T-connectors
1
STR1 safety switch
2
M12 connection cable, 8-pin
3
End connector
PROJECT PLANNING
4
8018754/12IU/2020-01-30 | SICK
O P E R A T I N G I N S T R U C T I O N S | STR1
17
Subject to change without notice
