Instruction Manual
D103412X012
Calibration
July 2013
215
Relay
Field Communicator TB > Configure/Setup > Calibration > Relay
Follow the prompts on the Field Communicator display to check relay adjustment. Replace the digital valve controller
cover when finished.
Note
Relay B and C are not user‐adjustable.
Double‐Acting Relay
The double‐acting relay is designated by “Relay A” on a label affixed to the relay itself. For double‐acting actuators, the
valve must be near mid‐travel to properly adjust the relay. The Field Communicator will automatically position the
valve when Relay is selected.
CAUTION
Care should be taken during relay adjustment as the adjustment disc may disengage if rotated too far.
Rotate the adjustment disc, shown in figure 5‐1, until the output pressure displayed on the Field Communicator is
between 50 and 70% of supply pressure. This adjustment is very sensitive. Be sure to allow the pressure reading to
stabilize before making another adjustment (stabilization may take up to 30 seconds or more for large actuators).
Figure 5‐1. Relay A Adjustment (Shroud Removed for Clarity)
ADJUSTMENT DISC
FOR SINGLE‐ACTING DIRECT
RELAYS: ROTATE ADJUSTMENT
DISC IN THIS DIRECTION UNTIL IT
CONTACTS THE BEAM
FOR DOUBLE‐ACTING RELAYS:
ROTATE ADJUSTMENT DISC IN
THIS DIRECTION TO DECREASE
OUTPUT PRESSURE
FOR DOUBLE‐ACTING RELAYS:
ROTATE ADJUSTMENT DISC IN
THIS DIRECTION TO INCREASE
OUTPUT PRESSURE
W9034
To Next Page
Loading...
Need help?
General
