Installation Instructions

Document No. 570-117
Installation Instructions
October 26, 2016
Siemens Industry, Inc. Page 3 of 5
CAUTION
It is important that the neutral that
supplies the TEC must be earth
grounded at the source of the 24
Vac power.
Possible erratic equipment
operation or damage if neutral is not
grounded.
The installation is complete.
Dimensions.
Wiring Diagrams
Offboard Air Module Wiring.
CAUTION
The PRC-OAVS has two terminal
blocks with terminations numbered
identically (terminations 1 through
16). DO NOT get these mixed up
with each other.
If the PRC-OAVS is not connected
as shown, it is not resistant to
electrical surges. It is also
susceptible to interference from
other equipment.
CAUTION
A separate power supply is required
if a 4-20 mA sensor is used.
Failure to follow wiring precautions
will result in equipment damage.
Wiring for AI with a 4 to 20 mA Sensor.
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.