Samson 3730-4, Mounting And Operating Instructions

Page: 64 / 212

An unsuccessful plotting of the reference
graphs is indicated on the display by Code
81 (see error code list).
After the initialization has been successfully
completed, the positioner still works prop-
erly, even though the reference graph plot-
ting has not been completed successfully.
The plotting of the reference graphs can be
interrupted by pressing
.
The reference graphs are required for the
extended diagnostic functions of EXPERT
+
.
5.6.1 Initialization modes
After enabling configuration with Code
3
and accessing Code
6
, you can choose one
of the initialization modes
MAX
,
NOM
,
MAN
or
SUb
to start initialization.
ZP
, the zero calibration is described in sec-
tion 5.8 on page 71.
MAX – Initialization based on maximum
range
Initialization mode for simplified start-up for
valves with two clearly defined mechanical
travel stops, e.g. three-way valves.
The positioner determines travel/angle of
rotation of the closing member from the
CLOSED position to the opposite side and
adopts this travel/angle of rotation as the
operating range from 0 to 100 %.
Enable configuration:
Default
OFF
Turn
→
Code
3
, press ,
turn
→
ON
, press .
After enabling:
Default MAX
Turn
→
Code
6
, press ,
turn
→
MAX , press .
4
Press INIT key to start initialization!
The initialization procedure may take
several minutes, depending on the
actuator size, as the valve moves
through its entire travel/angle of ro-
tation range.
Positioners with EXPERT + diagnostic func-
tions automatically start plotting the refer-
ence graphs after the initialization process
has been completed. See page 63.
Note:
For this
MAX
initialization, the
positioner cannot indicate the nominal
travel/angle of rotation in mm/° at first,
Code
5 remains disabled. In addition, the
lower (Code 8 ) and the upper (Code 9 )
x-range value can only be displayed in %
and modified .
If you want the display to indicate mm/°,
proceed as follows after configuration has
been enabled:
64
EB 8384-4 EN
Start-up and settings