Samson 3730 Series - Performing zero calibration

8-4 EB 8384-3 EN
Operation
8.3 Performing zero calibration
In case of inconsistencies in the closed position of the valve, e.g. with soft-seated plugs, it
might be necessary to recalibrate zero.
Risk of injury due to the actuator stem extending or retracting.
Î Do not touch or block the actuator stem.
The process is disturbed by the movement of the actuator stem.
Î Do not perform zero calibration while the process is running. First isolate the plant by clos-
ing the shut-off valves.
The positioner must be connected to the supply air to perform the zero calibration.
Enable conguration:
Congurationislockedagainifnosettingsareenteredwithin120seconds.
1. Turn untilCode3appears(reading:
No).
2. Press , the code number 3 blinks.
3. Turn until YES appears.
4. Press toconrm(reading: ).
Enableconguration
Default: No
Perform zero calibration:
1. Turn untilCode6appears.
2. Press , the code number 6 blinks.
3. Turn until ZP appears.
Î Press INIT key.
Zero calibration starts. The positioner
moves the valve to the CLOSED position
and recalibrates the internal electrical zero
point.
Init mode
Default: MAX
WARNING
!
NOTICE
!