Sm 1226 F-Dq 4 X 24 Vdc - Siemens SIMATIC S7 Functional Safety Manual
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You can achieve Category 4 in 1oo2 configurations if you diagnose external wiring faults or
exclude them according to standards.
1.4.3
SM 1226 F-DQ 4 x 24 VDC
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA
1.4 S7-1200 Fail-Safe signal modules (SM)
The SM 1226 F-DQ 4 x 24 VDC is an S7-
1200 signal module (SM) for use in fail-safe
applications and is suitable for solenoid
valves, DC contactors, and indicator LEDs. It
has four outputs with P- and M-switching that
are rated for connection to 24 VDC actuators
with up to a 2.0 A rating.
Product overview
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