Samson TROVIS 3730-1 - 8.5.6 Performing zero calibration

EB 8484-1 EN 85
Operating the positioner
8.5.6 Performing zero calibration
Risk of personal injury due to moving parts on the valve.
During zero calibration, do not insert hands or ngers into the valve yoke and do not touch
any moving valve parts.
Do not block the actuator stem.
In case of inconsistencies in the closing position of the valve, e.g. with soft-seated plugs, it
might be necessary to recalibrate zero over Code P23.
Start zero calibration:
Î Enable conguration (section8.1).
1. Turn
until CodeP23 appears.
2. Press
and hold for 3s (reading: 3 ... 2 ... 1).
Î Zero calibration starts. P23 and ZERO blink during the calibra-
tion procedure. The positioner moves the control valve to the
CLOSED position and recalibrates the internal electric zero point.
Î When the zero calibration has been successfully completed, the
positioner changes to closed-loop operation.
Canceling zero calibration
Zero calibration can be canceled:
Cancel zero calibration:
1. During zero calibration, press
. Code P23 and ESC blink.
2. Press
again. Zero calibration is canceled.
Î The positioner changes to closed-loop operation without perform-
ing a zero calibration. A new zero calibration can be started di-
rectly afterwards.
WARNING
!