Start-Up Menu; Setting The Actuator Type; Determining The Fail-Safe Position - Samson TROVIS 3730-3 Mounting And Operating Instructions

8.4 Start-up menu

1. Press (in start screen) to change to the main menu.
until Start-up [7] appears.
2. Turn
3. Press to go to the Start-up menu.
8.4.1

Setting the actuator type

Three different parameters are available for selection:
− Linear actuator
− Rotary actuator
− Linear actuator (expert) with separate setting options for pin position and nominal range
(within Start-up [7] menu) until Actuator [7.1] appears.
1. Turn
2. Press and turn
3. Press to confirm the setting.
8.4.2

Determining the fail-safe position

Define the fail-safe position of the valve taking the valve type and the actuator's direction of
action into account. Position the AIR TO OPEN/AIR TO CLOSE slide switch accordingly (see
Fig. 42 on page 88 and section 7.2):
Fail-safe position
Switch setting: AIR TO OPEN
Switch setting: AIR TO CLOSE
For checking purposes: after initialization is completed, the positioner display must read 0 %
when the valve is closed. If this is not the case, change the slide switch position and re-initial-
ize the positioner.
EB 8484-3 EN
to set the actuator type.
Description
Signal pressure opens the valve, e.g. for a fail-
close valve
Signal pressure closes the valve, e.g. for a fail-
open valve
Operating the positioner
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