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4
UNI TEMP
Settings:
1
ON
2 3 4
DIP switch settings
CW
Temperature
range setting
x10
CCW
x1
1
2
3
4
min
max
DIP
0
°
C..100
°
C
60
°
C..85
°
20
°
C..70
°
C 25
°
C..45
°
C
2
OFF
OFF
ON
ON
3
OFF
ON
OFF
ON
Temperature range setting
1
ON
2 3
4
Xp parameter
a proportional control
range of valve
With DIP switches inside actuator
is possible to set the following
parameters:
DIP 1
Direction of rotation (direct CW /
inverse CCW)
DIP 2,3 Different temperature ranges
depending on the application
(0°C..100°C, 60°C..85°, 20°C..70°C,
25°C..45°C)
DIP 4
Reaction factor
NOTE – when changing DIP1 position,
controller calibration is carried out
DIP switches and trimmer Xp are located
inside controller. To open the controller it is
necessary to loosen the screws on the cover
(3x), and handle screw (1x).
LED indication of operation:
- Blinking – controller calibration
- ON: normal operation
Xp parameter - a proportional control range
of valve (from 10K to 100K)
ON
1 2 3 4
MAN
AUTO
8 8 8
1 Mechanical indication.
Indicator can be set according to the valve assembly
2 Button for manual/auto control
3 Handle for manually controlling the drive, which also serves for the
indication position of the valve
4 Button for adjusting the required temperature. When adjusting the
temperature, the set value flashes on LCD screen.
5 LCD screen for displaying temperature
UNI TEMP
www.first.si
5
Recommended mounting position
Manual control:
Note:
when the button
for manual operation is
in <MAN> position,
controller stays in
temporary position
irrespective of control
signal.
Controller behavior diagram as a function of temperature:
50
45
45°C
50°C
55°C
55
permanent
valve opening
permanent
valve closing
set temperature
T (°C)
t
closing area
100% opening
100% closing
opening area
T
50
=
set
°C
Xp =10K
Xp = 10K
permanent
valve opening
permanent
valve closing
impulse valve
opening
impulse valve
closing
Example:
-
Desired temperature: 50 C
-
Xp parameter – proportional control range of valve (10K)
°
When the temperature is
less than 45
, controller
gives continuous signal
for opening mixing valve.
°C
When the temperature is
between 45
and 50
,
controller pulsating
opens mixing valve.
Nearer the desired
temperature (50
),
shorter pulses.
°C
°C
°C
When the temperature is
between 50
and 55
,
controller pulsating
closes mixing valve.
Nearer the desired
temperature (50
),
shorter pulses.
°C
°C
°C
When the temperature is
higher than 55
,
controller gives
continuous signal for
closing mixing valve.
°C
Nearer the desired
temperature (50
),
shorter pulses.
°C
Nearer the desired
temperature (50
),
shorter pulses.
°C
impulse valve
opening
impulse valve
closing
90°
90°
90°
90°
ON
1 2 3 4
FIRST
UNI MRB
LED
COM
Xp
