Wiring Diagrams; A.3.4.6 Wiring Diagrams - Siemens SIMATIC S7 Functional Safety Manual

Technical specifications
A.3 Fail-Safe signal module (SM) technical specifications
A.3.4.6

Wiring diagrams

Table A- 64 SM 1226 F-DQ 2 x Relay (6ES7 226-6RA32-0XB0)
External fuse or circuit breaker required
Use a general purpose fuse type gG per IEC 60269, 5A maximum on each circuit. Some
application standards require derating to exclude contact welding as a fault.
Failure to follow these installation requirements could result in death, severe personal
injury, and property damage.
Always follow these requirements when installing S7-1200 modules.
190
WARNING
①
The two rectangular areas are yellow. These are only on
the fail-safe signal modules.
②
Two LEDs per output:
One for channel status: Green (on = output on, off =
•
output off)
One for channel faults: Red (on = problem/passivated,
•
off = ok, blink = ready to reintegrate (activate))
③
External fuse
Note: Refer to "Digital output applications" (Page 75) for
alternate applications wiring.
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA