Siemens SIRIUS 3SK1

Article number Device termination connector for
3ZY1212-1DA00 3RQ1 output expansion
Width 17.5 mm
3ZY1212-0FA01 Set for 3SK1 safety relay, > 45 mm wide
Set consists of 3ZY1212-2FA00 device connector and
3ZY1210-2AA00 device connector
Use of device connectors
• A device connector is always necessary when other devices have to be plugged in.
• A device termination connector is always required in the system for the last module on the
right.
Note
Use of the device connectors to expand the Advanced basic units is optional.
The device connectors cannot be used with the Standard series.
Note
Only safety relays with a supply voltage of 24 V DC may be used on the 3ZY12 device connectors.
Note
If expansion units are controlled via the 3ZY12 device connector, additional feeding of the
control supply voltage (A1/A2) at one of the output expansions leads to a fault in the system
con󹪝guration.
DANGER
Ensuring electrical safety and safety function
The normally closed contact of 3RQ12. is designed for a voltage of 24 V DC. If higher voltages
occur, electrical safety cannot be ensured due to the voltage clearance distances. If the 3RQ12.
is integrated in a system with a device connector, the feedback circuit is routed via the device
connector; connection of external voltage is not necessary and not permitted. Connecting
external voltage can bypass the safety function.
The following device connectors are required for the various enclosure widths of the Advanced
device series:
Devices Device connector for
3SK1 safety relay
17.5 mm
3ZY1212-1BA00
Device connector for
3SK1 safety relay
22.5 mm
3ZY1212-2BA00
Device termination
connector for 3SK1
safety relay
22.5 mm
3ZY1212-2DA00
Device termination
connector for 3RQ1
17.5 mm
3ZY1212-1DA00
3SK1 Advanced basic units
3SK1121 - x x -
3SK1122 - x x -
3SK1120 x - - -
System con󹪝guration
6.2 3ZY12 device connector
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005 117