Samson TROVIS 3731-3, Mounting And Operating Instructions

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Press
The positioner changes to automatic mode
(AUTO). The current valve position is indi-
cated in % on the display.
Note:
If the positioner shows a tendency to
hunt in automatic operating mode, the pa-
rameters K
P
and T
V
must be slightly cor-
rected. Proceed as follows:
– Set T
V
(Code 18) to 4.
– Reduce K
P
(Code 17 ) until the positioner
shows a stable behavior.
Zero point correction
Finally, if process operations allow it, the
zero point must be calibrated as described
in section 7.6.
7.6 Zero calibration
In case of discrepancies with the closing po-
sition of the valve, e.g. with soft-sealed
plugs, it may become necessary to
recalibrate the zero point.
NOTICE
The valve briefly moves from the current
travel/angle of rotation position to the
closed position.
Note:
The positioner must be connected to
the supply air to perform the zero calibra-
tion.
Enable configuration:
Turn
→
Code 3 , display: No
Press , Code 3 blinks.
Turn
→
YES
Press , display:
Perform zero calibration:
Initialization mode
Default: MAX
Turn
→
Code
6
Press , Code
6
blinks.
Turn
→
ZP
Press
Turn
→
Code 0
58
EB 8387-3 EN
Start-up – Settings