Siemens SIMATIC S7-1200

Technical specifications
A.3 Fail-Safe signal module (SM) technical specifications
S7-1200 Functional Safety Manual
178 Manual, 02/2015, A5E03470344-AA
A.3.3.3
Specifications
Table A- 53 General specifications
Model
SM 1226 F-DQ 4 x 24 VDC
Article number
6ES7 226-6DA32-0XB0
Dimensions W x H x D (mm)
70 x 100 x 75
Weight
270 grams
Power dissipation 8 W
Current consumption (SM Bus, 5 VDC)
125 mA
Current consumption (24 VDC)
170 mA + load current for all P-switch outputs
Isolation
• Signal terminals on this module are referenced to this
module's M terminal and NOT ISOLATED from each oth-
er.
• Signal terminals on this module are isolated to 500VAC,
for 1 min from S7-1200 system internal logic and Ground.
Assigned address area:
• I/O area for inputs
• I/O area for outputs
6 bytes
6 bytes
Maximum achievable safety class:
• In accordance with IEC 61508:2010
• In accordance with EN ISO 13849-1:2008
SIL 3
Category 4, PL e
Fail-safe performance characteristics:
• Operation in Low Demand Mode (Average probability of
a dangerous failure on demand), PFD_avg
• Operation in High Demand or Continuous Mode (Aver-
age frequency of a dangerous failure per hour), PFH
• Proof test interval (Mission time or Useful lifetime)
• Safety repair time
SIL 3
1e-5
4e-9
20 years
100 hours
Outputs status display
Green LED / channel
Outputs fault display
Red LED / channel
Module fault display
Red / Green LED (DIAG)
Diagnostic information can be displayed
Possible (TIA Portal, HMI, or Web page)
Table A- 54 Performance
Model
SM 1226 F-DQ 4 x 24 VDC
Tmax_i: Internal cycle time TBD
Note: Refer to "Fail-Safe signal module (SM) response times"
(Page 197) for further information.