Samson 4785, Mounting And Operating Instructions

Page: 33 / 78

4.2 Write protection
A microswitch marked "write protection" is
located to the right of the seven bus address
selector switches inside the hinged cover.
When activated (position ON ), the posi-
tioner settings are write protected, so that
they cannot be overwritten by the
PROFIBUS communication protocol. If you
want to change the settings via communica-
tion, set the switch to position OFF .
4.3Activating/deactivating the
forced venting function
For model index .0 3 and higher:
1. Unscrew the four screws from the cover
inside the hinged lid and remove the
cover.
2. Unscrew the central screw on the board
and push the board to one side.
3. Set switch to desired position:
1 ENABLED > Function activated
2 DISABLED > Function deactivated
4.4 Default settings
All variables are set to their default values.
Initialization applying the maximum range
allows for a universal start-up.
Note!
Manual operation and activated
final position functions can cause
the actuator to be filled with the
maximum supply pressure.
Should this lead to impermissible
forces occurring, the supply pressure
must be restricted by a suitable re-
ducing station.
Fig. 11
⋅
Inside view of cover plate
GW1
GW2
3785
PE
IEC 1158-2
S
NC
-5
2
+5
1-42
+4
1-86
+85
-82
+81
LED 1 LED 2
1
2
4
8
16
32
64
W
rite protection
Caution! V
alve actuates
Init/Zero
Bus address
1
0
0N
0FF
0
Arrow for
mounting position
Manual adjustment
Zero point lever
Pointer
Adjustment screws GW Key for initialization
or zero point adjustment
Write protection switch
Metal tags
Bus address
LEDs SSP interface
EB 8382-2 EN
33
Operation