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PRESYS
Instruments
b) Pressure Switch Verification
Pressure switches are devices that receive a pressure signal and have relay
alarm. The relay is activated whenever the pressure passes above or below a certain
setpoint alarm.
Connect the pressure switch relay output to the switch input of PCON-Y17, RTD1
and RTD4 terminals, and make the pneumatic connections as illustrated in the figure
below.
Select SWITCH in the Input (Auxiliary) menu and configure the Pressure Control
parameters (the Control Operation Mode must be selected).
To perform the automatic pressure test, press the PRESSURE SWITCH as
shown in the following figure.
Page 36
Fig. 47 - Pressure Switch Verification
PCON-Y17
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