Samson TROVIS 3730-3, Mounting And Operating Instructions

Page: 111 / 180

EB 8384-3 EN 111
Operating the positioner
7.7 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.
Do not touch or block the actuator stem.
The process is disturbed by the movement of the actuator stem.
Do not perform zero calibration while the process is running. First isolate the plant by closing
the shut-off valves.
The positioner must be connected to the supply air to perform the zero calibration.
Enable configuration:
If no settings are entered within 120 seconds, the enabled configuration function becomes in -
valid.
1. Turn until Code 3 appears (reading:
No ).
2. Press , the code number 3 blinks.
3. Turn until
YES appears.
4. Press to confirm (reading: ).
Enable configuration
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
!