Samson 3730-6, Mounting And Operating Instructions

Page: 87 / 124

Code
no.
Parameter
– Readings,
values [default setting]
Description
Note: Codes with marked with an asterisk (*) must be enabled with Code 3 prior to configuration.
12* Set point, lower range value
(w-start)
[0.0] to 75.0 % · ESC
Lower range value (0 % = 4 mA) of the valid set point range
This value must be smaller than the upper range value (w-end).
The set point range is the difference between
Set point, upper
range value – Set point, lower range value . The difference must
be larger or equal to 25 % (= 4 mA).
When the set point range of 0 to 100 % = 4 to 20 mA, the valve
moves through its entire operating range from 0 to 100 %
travel/angle of rotation.
In
split-range operation , the valves operate with smaller set
points. The control signal of the control unit to control two valves
is divided such, for instance, that the valves move through their
full travel/angle of rotation at only half the input signal (first
valve set to 0 to 50 % = 4 to 12 mA and second valve set to 50
to 100 % =12 to 20 mA).
13* Set point, upper range
value (w-end)
25.0 to [100.0] % · ESC
Upper range value (100 % = 20 mA) of the valid set point range
This value must be greater than the lower range value (w-start).
14* CLOSED end position
(end position w <)
No · 0.0 to 49.9 % of the
span set over Code 12/13
ESC, [1.0]
Limit of the set point w
When the set point falls below the limit, an actuator with ATO is
completely vented and an actuator with ATC is filled with air.
This action always lead to the tight-closing of the valve.
Codes
14/15 have priority over Codes 8/9/10/11 .
Codes 21/22 have priority over Codes 14/15 .
15* OPEN end position
(end position w >)
[No] · 50.0 to 100.0 % of
the span set over Code
12/13 · ESC
NOTICE For double-acting
actuators (ATO) the pres-
sure limit must not be active!
Limit of the set point w
When the set point falls below the limit, an actuator with ATO is
filled with air and an actuator with ATC is completely vented.
This action always lead to the maximum opening of the valve.
Codes
14/15 have priority over Codes 8/9/10/11 .
Codes 21/22 have priority over Codes 14/15 .
Example: Set the end position w > to 99 % for three-way valves.
16* Pressure limit
[No] · 1.4 to 7.0 bar · ESC
The signal pressure to the actuator can be limited.
After changing the pressure limit setting, the actuator must be
vented once (e.g. by selecting the fail-safe position).
EB 8384-6 EN
87
Code list