Operating instructions

Note: The switch position is prompted prior
to an initialization. After an initialization has
been completed, changing the switch posi
-
tion does not have any effect on the opera
-
tion of the positioner.
7.2 Setting the volume
restriction Q
The volume restriction Q is used to adapt the
air delivery to the size of the actuator:
4
MAX BACK/MIN SIDE position for actu-
ators with a transit time < 1 s, e.g. linear
actuators with an effective area smaller
than 240 cm², require a restricted air
flow rate (MIN).
4
MIN BACK/MAX SIDE position for actu
-
ators with a transit time
³
1 s (the air
flow rate does not need to be restricted.)
Intermediate positions are not permitted
NOTICE
The positioner needs to be initialized again
after the position of the restriction has been
changed.
7.3 Adapting the display
The data representation on the positioner
display can be turned by 180° to adapt it to
how the positioner is mounted.
Reading direction for right
attachment of pneumatic
connections
Reading direction for left at
-
tachment of pneumatic con
-
nections
If the displayed data appear upside down,
proceed as follows:
Turn
®
Code 2
Press , Code 2 blinks
Turn
®
Required direction
Press to confirm reading direction.
7.4 Limiting the signal pressure
If the maximum actuator force may cause
damage to the valve, the signal pressure
p
out
must be limited.
Enable configuration at the positioner before
activating the pressure limit function:
Note: If no settings are entered within
120 seconds, the enabled configuration
function becomes invalid.
EB 8384-6 EN 57
Start-up – Settings
MAX BACK
MIN SIDE
MIN BACK
MAX SIDE
Q
Fig. 22 · Volume restriction Q
MAX BACK/MIN SIDE setting