Zero Calibration; Canceling Zero Calibration; Manual Mode - Samson 3725 Mounting And Operating Instructions

8.9 Zero calibration

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 P16 (enable configuration as described in
section 8.2).
Start the zero calibration by activating Code P16 as follows:
The positioner moves the control valve to the CLOSED position and recalibrates the internal
electric zero point.
When the zero calibration has been successfully completed, the positioner changes to closed-
loop operation.
8.9.1

Canceling zero calibration

Zero calibration can be canceled:
1. During zero calibration touch
2. Press to confirm: Zero calibration is canceled.
Note:

This code must be confirmed by pressing
The positioner changes to closed-loop operation without performing a zero calibration. A
new zero calibration can be started directly afterwards.

8.10 Manual mode

The valve position can be moved as follows using the Manual mode function:
EB 8394 EN
11. Touch or
12. Press and hold for six seconds. 6...5...4...3...2...1 is counted
down on the display.
Zero calibration starts, ZERO blinks on the display.
The time required for the initialization procedure depends on the ac-
tuator transit time and can take a few minutes.
: ESC blinks on the display.
until Code P16 appears.
. Otherwise, the code remains active.
Settings
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