72 Rockwell Automation Publication 1734-UM013N-EN-P - September 2017
Chapter 4 Install the Module
Safety Analog Input Wiring Examples
Figure 35 - 2-wire Current (4…20 mA) Sensor (SIL2 or SIL 3)
Figure 36 - 3-wire Voltage or Tachometer Sensor (SIL 2)
Follow the Guidelines for Wiring Safety Analog Inputs on page 71.
V0 V1 V2 V3
I0 I1 I2 I3
COM COM COM COM
S0
FE
S1 S2 S3
SIL2 or SIL 3
2-wire
Sensor
1734-TB Terminal Bases
Signal (I)
+24V
Cable Shield
V0 V1 V2 V3
I0 I1 I2 I3
COM COM COM COM
S0
FE
S1 S2 S3
For analog voltage-output sensors, the signal levels for operation for the application must be outside the signal level when the signal is not
present, for example, when the wire is broken.
See Figure 47
and Figure 48 on page 78 for tachometer wiring detail.
SIL 2
3-wire
Sensor
1734-TB Terminal Bases
Signal (V)
+24V
Cable Shield
Signal Return
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