Specifications; A.3.3.3 Specifications - Siemens SIMATIC S7 Functional Safety Manual

Technical specifications
A.3 Fail-Safe signal module (SM) technical specifications
A.3.3.3

Specifications

Table A- 53 General specifications
Model
Article number
Dimensions W x H x D (mm)
Weight
Power dissipation
Current consumption (SM Bus, 5 VDC)
Current consumption (24 VDC)
Isolation
Assigned address area:
I/O area for inputs
•
I/O area for outputs
•
Maximum achievable safety class:
In accordance with IEC 61508:2010
•
In accordance with EN ISO 13849-1:2008
•
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
•
Outputs status display
Outputs fault display
Module fault display
Diagnostic information can be displayed
Table A- 54 Performance
Model
Tmax_i: Internal cycle time
178
SM 1226 F-DQ 4 x 24 VDC
6ES7 226-6DA32-0XB0
70 x 100 x 75
270 grams
8 W
125 mA
170 mA + load current for all P-switch outputs
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.
6 bytes
6 bytes
SIL 3
Category 4, PL e
SIL 3
1e-5
4e-9
20 years
100 hours
Green LED / channel
Red LED / channel
Red / Green LED (DIAG)
Possible (TIA Portal, HMI, or Web page)
SM 1226 F-DQ 4 x 24 VDC
TBD
Note: Refer to "Fail-Safe signal module (SM) response times"
(Page 197) for further information.
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA