Application

Sequence of Operation
Wiring Diagrams
15
Siemens Industry, Inc.
Application Note, App 6663
140-1109
2014-10-27
CAUTION
Each 4-20 mA sensor requires a SEPARATE dedicated power limited 24 VDC power
supply.
DO NOT use the same transformer to power both the sensor and the controller.
NOTE:
If the voltage/current switch is set to current and a 4 to 20 mA sensor is connected to
an AI, then special wiring requirements must be followed.