Dip Switches - ESBE ALH134 Serie Manual Del Usuario

5b

DIP SWITCHES

GB
Picture 3, chapter 5a
Dip
Switch
Feedback signal
1
Select between 2-10V and 0-5V feedback voltage output.
Control signal—MOD / INC
Series ALHxx4 is either controlled by a variable direct
2
voltage, for a modulating signal (MOD), or by a 3-point
increase/decrease signal (INC).
Sequence or parallel control— – – – / SEQ (2)
With sequence (or parallel) control (SEQ), two actuators/
valves can be controlled with one control signal. For each
actuator using part signal control it is possible to determi-
3 ne which voltage range to use (See switch 5).
If the switch NORM / INV is in the NORM position, the
higher voltage corresponds to 100% flow and the lower
voltage to 0%. With the INV position selected the opposi-
te function is obtained
Input Voltage range—0-10 / 2-10
4 Choice of either 0-10V or 2-10V input control voltage
signal.
Operational voltage range (SEQ / SPLIT) sequence
(3)
5 When switch 3 (SEQ) ON Choice to split operational
voltage range as follows:
Off: low: 0 - 5 V (2 - 6 V), On: high: 5-10V (6 - 10 V)
Running time—60 s / 300 s (floating control only)
On increase/decrease control, it is possible to select the
6 running time between 60s or 300s.
With modulating control, the running time is always 15 s
/ 20 s / 30 s depending on stroke.
Direction of movement—NORM / INV
The Norm / INV switch reverses the actuator direction
of movement relative to signal change. With the switch in
7
the NORM position, the actuator spindle moves up when
the signal decreases. With the switch in the INV, the
actuator spindle moves down when the signal decreases.
Flow Curve Linearization—NORM / LIN/LG
With the linearization switch then valve flow
characteristic can be modified. Selecting LIN/LG
will change characteristics of an equally modified
8 percentage (EQM) valve to behave in a linear function.
It will also change a valve designed for linear flow to
operate with "Quick opening characteristics". i.e. with a
small control signal, the valve will open quickly to allow
high flow control.
Input signal and stroke Calibration OP / ADJ
Switch used to calibrate the actuator stroke with the
valve end positions during the actuators commissioning.
By momentarily placing the switch in the ON position,
the actuator will automatically find the end positions of
9
the valve. At the end of the adjustment all the other dip
switch settings (1 to 8) will be registered again.
Stroke calibration will only be initiated once power is
applied to the actuator and the user has triggered this
switch. The ALH actuator is delivered pre-programmed
for valves with a 20mm stroke
18
Description OFF
2-10V DC 0-5V DC
Prop. control signal, 3-Point Floating control signal, picture
picture A B
Normal operation SW 2 off, SW 3 on, SW 4 select base
range
(0-10 or 2-10) SW 5 select sequence
range.
0-10V DC 2-10V DC
0-5V DC or 2-6V
5-10V DC or 6-10V DC
DC
60 s 300 s
This switch will This switch will change the proportional
change the or floating input signal to direct or
proportional or reverse action similar to switch 1.
floating input
signal to direct or
reverse action.
Normal Used to adjust the actuators linear
or logarithmic characteristics. With
this setting, the characteristics of an
equally modified percentage valve can
be modified to almost linear and a linear
valve can operate with "quick open"
characteristics based on the application
requirements.
Normal Used to calibrate the valve stroke limits.
Note: Switch 9 With the actuator powered, turn switch
must be in the 9 on, then off.
off position for
normal operation.
ON