Siemens SIMATIC S7 - Page 173

Technical specifications
A.3 Fail-Safe signal module (SM) technical specifications
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA
173
Model
SM 1226 F-DI 16 x 24 VDC
Module fault display
Red / Green LED (DIAG)
Diagnostic information can be displayed Possible (TIA Portal, HMI, or Web page)
Table A- 47 Performance
Model
SM 1226 F-DI 16 x 24 VDC
Tmax_i: Internal cycle time TBD
Note: Refer to “Fail-Safe signal module (SM) response times"
(Page 197) for further information.
Table A- 48 Power supply (L+, M)
Model
SM 1226 F-DI 16 x 24 VDC
Voltage range
20.4 VDC to 28.8 VDC
Surge voltage
35 VDC for 0.5 s
Input current
• 130 mA with no current out of Vs1 and Vs2
• 730 mA with maximum current out of Vs1 and Vs2
Hold up time (loss of power)
1.0 ms at 20.4 VDC
Internal fuse, not user replaceable
2.5 A
Reverse polarity protection
Yes
Table A- 49 Sensor power (Vs1 / Vs2)
Model
SM 1226 F-DI 16 x 24 VDC
Number of outputs
2
Voltage range
L+ minus 2.0 VDC minimum
Output current rating (maximum)
300 mA
Permissible total current of outputs
600 mA
Short-circuit protection:
• Operating value
Yes
0.7 A to 2.1 A