Samson TROVIS 3730-1 - 8.1 Enabling configuration to change parameters; 8.2 Saving parameters in a non-volatile memory; 8.3 Entering the fail-safe position

78 EB 8484-1 EN
Operating the positioner
8.1 Enabling conguration to change parameters
Beforechangingparametersettingsinaninitializedpositioner,congurationmustbeen-
abledrstbyselectingCodeP2:
LOCK and the key icon indicate that the conguration is locked. De-
activate locking as follows:
1. Turn until CodeP2 appears.
2. Press
to conrm the selected code. P2 blinks.
3. Turn
until OPEN appears.
4. Press
to deactivate the locking.
Conguration is locked again if no settings are entered within 5 min.
8.2 Saving parameters in a non-volatile memory
Changed parameters are indicated by the icon on the display. To save changes to pa-
rameters in a non-volatile memory, proceed as follows:
1. After changing a parameter, turn until the reading jumps from Code P27 to Code
P0 (or from Code P0 to Code P27).
Î The icon disappears. The changes to a parameter are saved in a non-volatile mem-
ory.
8.3 Entering the fail-safe position
Denethefail-safepositionofthevalvetakingthevalvetypeandtheactuator'sdirectionof
action into account.
Fail-safe position Description
ATO (air to open) setting: Signal pressure opens the valve, e.g. for a fail-
close valve
ATC (air to close) setting: Signal pressure closes the valve, e.g. for a fail-
open valve
Note