Cla-Val 350-01/3650-01 - Manual (Page 26)

Wiring of remote automatic and remote manual operation.
There are two modes of remote operation possible with the actuator. They are remote automatic mode and
remote manual mode. The wiring diagrams for each are shown separately.
Remote Automatic Actuator Wiring (when using an external process variable)
Use the following procedures when interfacing this actuator with ancillary instrumentation components. This
arrangement has been thoroughly tested and insures that problems associated with ground loops are avoided.
A. Wire the process variable transmitter directly to the actuator, using the actuator’s internal power supply.
B. Retransmit the process variable signal using the terminals 9&10 on TB2 These outputs are isolated and
must be externally powered.
C.Use isolator when remote setpoint is used.
D. Use isolator when externally powering process variable.
Avoid whenever possible the “sharing” or “breaking-into” the process-variable loop wiring unless an optical
isolator is used.
4 Wiring information
6