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Series W-AR actuator is widely used in auto-control system to
regulate the opening rate of electronic valves. Along with Series
W-PICV valve body, the actuator is able to control the system’s
temperature, pressure and flow through receiving different kinds of
signals.
Electric Actuator
Features
• Easy to debug on site, no need to remove the shell
• Electronic presetting facilitates on-site commissioning
• Manual operation facilitates on-site trouble-shooting
• Precise positioning achieved by self-calibration function
Series W-AR
Working Principle
Modulation Type W-AR2M
The modulation type electric actuator can realize equal percentage
flow control. By inputting 0 (2) - 10VDC and 0 (4) - 20mA control
signals, the feedback output signal of valve position can be
observed, and the automatic regulation and control of pipeline fluid
medium can be realized, which makes the application of control valve
more flexible. After the modulation type electric actuator is powered
on, by pressing the SW1 learning / reset button on the shell, the
actuator will firstly go down to find the valve closing position, and
then reverse the upward direction to return to the reference position
and stop. After the self-adaptation is completed, it will automatically
enter the operation state. MCU (chip) will automatically save the
parameters obtained during learning, and it will not be lost even after
power failure. At this time, the driver power indicator on long time
light indicates that the self-adaptive is over, and the coordination and
adjustment of valve body and driver are completed. Currently, the
running direction of the driver is controlled by the control signal.
When the driver is powered on, press the SW1 learning / reset button
on the shell to enter the adaptive state if it needs to be adaptive.
On-off Type W-AR1S
The W-AR1S motorized actuator accepts two-wire and one–control
on/off type control. When the power is switched on, the actuator
drives the screw downwards one-way to close the valve. When the
external power is cut off, auto reset is triggered electronically to drive
the screw upwards to keep the valve open.
Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and
without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Specifications
Model No.
Thrust Output
Power Supply
Feedback Signal
Connecting Wire Spec.
Power Consumption
Operating Time
Max. Stroke
Protection Class
Temperature Limits
Max. RH
W-AR1S-16
W-AR1S-25
W-AR2M-16
＞
160N
110~240VAC 50/60H
On/off type
(two-wire, one control)
< 2W
≈5s/mm
6.5mm
IP54
Operation: 2
～
+55
℃
Storage: - 20
～
+65
℃
< 90% and no condensation
——
Two-core Length 200mm
（
2X0.5mm²
）
The screw is preset in the upwards position for easy connection to the valve.
The actuator drives the screw downwards to close the
valve when the power is on and drives the screw upwards
to open the valve when power is off.
0(2)~10V DC(input resistance 200KΩ)
Or 0(4)~20mA DC(input resistance 500Ω)
0~10V DC (1mA)
Four-core Lengt 400mm
（
4X0.3mm²
）
24VAC/DC±10%
W-AR2M-25
＞
250N
＞
160N
＞
250
Control Signal
Factory Preset
Switch JP1 setting: 0~10 V DC control,RA status: the actuator
drives the screw upwards to close the valve by 0V control signal and
drives the screw upwards to open the valve by 10V control signal.
Model Description
WATTS
Electric Actuator
Multi-turn
W
A
R
W-
A
1
R
S-
16
Power Supply:
1=110~240VAC
2=24VAC/DC
Control Mode:
S =ON/OFF Type M=Modulation Type
Output Force:
16=160N 25=250N
W-AR-EN-2007
Material
Flame-Retardant ABS Engineering Plastics
Glass Fiber Flame-Retardant Nylon PA66+30%
Brass HPb59-1
Compontent
Upper Shell
Lower Shell
Center Crew
and gear
Connecting Nut
Material
10% Glass Fiber Reinforced POM
Installation Dimensions (mm)
Upstream installation dimension of 160N actuator=13.6mm
Upstream installation dimension of 250N actuator=15.8mm
82
61
81
M30X1.5
≥50
75
65
