Siemens S7-1200 - Page 947

Technical specifications
A.12 Analog signal boards (SBs)
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
947
Technical data
SB 1231 AI 1x12 bit
Input impedance
Differential
Common mode
Voltage: 220 kΩ; Current: 250 Ω
Voltage: 55 kΩ; Current: 55 kΩ
Behavior on RUN to STOP
Last value or substitute value (default value 0)
Measuring principle
Actual value conversion
Common mode rejection
400 dB, DC to 60 Hz
Operational signal range Signal plus common mode voltage must be less than +35 V and
greater than -35 V
Isolation (field side to logic)
None
Cable length (meters)
100 m, twisted and shielded
Table A- 208 Diagnostics
Technical data
SB 1231 AI 1 x 12 bit
Overflow/underflow
Yes
24 VDC low voltage
no
Table A- 209 Wiring diagram for the analog input SB
SB 1231 AI x 12 bit (6ES7 231-4HA30-0XB0)
①
Connect "R" and "0+" for current
Note: Connectors must be gold. See Appendix C, Spare Parts for order number.