Functional safety
13.10 Recommended safety relays
SINAMICS DCM DC Converter
728 Operating Instructions, 12/2018, A5E34763375A
Recommended safety relays
Manufacturer,
order number
1
EMERGENCY STOP
button
Siemens
EMERGENCY STOP mushroom pushbutton, positive
latching, rotate to release
Siemens
3SB3403-0D
Contact block with 2 contacts, 2NO, spring-loaded
connection, for front panel mounting
Siemens
Protective collar for EMERGENCY STOP mushroom
pushbutton, with block, yellow
1 Power supply for 3SK1 Siemens
3SK1230-2AW20
Power supply for 3SK1
(https://mall.industry.siemens.com/mall/en/Catalog/Product/3
SK1230-2AW20)
SIRIUS safety relay - power supply for 3SK1 advanced series
Us = 115 - 230 V AC/DC spring-loaded connection
1 Safety relay
Basic device advanced
Siemens
3SK1121-2CB41
3SK1121-2CB42
3SK1121-2CB44
Safety relay basic unit Advanced (for SS1)
(https://mall.industry.siemens.com/mall/en/Catalog/Product/3
SK1121-2CB42)
SIRIUS safety relay, basic device advanced, with time delay
0.5-30 s,
4 relay enable circuits (2 NO contacts without delay, 2 NO
contacts, with delay)
Us = 24 V DC, spring-loaded connection
2 Coupling relay for SIL3 Phoenix Contact
PSR-SPP-24DC/FS
P/1X1/1X2
- 2981981
Coupling relay for SIL3
(https://www.phoenixcontact.com/en/produkte/2981981)
Coupling relay for SIL 3 high and low demand applications,
coupled with digital output signals to the I/O, 1 enable current
path, 1 feedback signal current path, 1 digital signaling
output, safe-state-off applications, test pulse filter,
PSR-TBUS connection, pluggable spring-loaded terminal
1 Safety relay
Basic device advanced
Siemens
3SK1121-2AB40
Safety relay basic unit Advanced (for STO)
(https://mall.industry.siemens.com/mall/en/Catalog/Product/3
SK1121-2AB40)
SIRIUS safety relay basic device advanced range,
relay enable circuits, 3 NO contact + relay signaling circuit,
1 NC contact Us = 24 V DC, spring-loaded connection
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