Azbil 100 Series - Chapter 5. Maintenance; Auto;Manual Selection Switch; Structure of the A;M Switch

5-1
Chapter 5. Maintenance
5-1. Auto/Manual selection switch
The Auto/Manual switch selects the control method for the pneumatic output from the
positioner to be either automatic operation or manual operation.
Automatic operation

An air pressure output corresponding to the input signal is output from the SVP.

See Fig.5-2.
Manual operation

The supplied air pressure is output directly from the positioner.

This allows manual operation using a pressure regulator.

See Fig.5-3.
CAUTION
The double acting actuator has no manual operation function.
WARNING
The valve may move suddenly when the A/M switch is operated. Prepare yourself and the
process in advance so that the process is not adversely affected when the valve operates.
5-1-1. Structure of the A/M switch
The structure of the A/M switch is shown below.
A/M switch
Fig. 5-1. Structure of the A/M Switch