Dwyer EVA3 User Manual
Bulletin V-8
Ø4-1/32
[102.4]
4-57/64
[124.22]
3-15/16
[100]
KNOB
POWER
CONNECT
CONNECTOR
Series EVA2 and EVA3 Electric Actuators
Specifications - Installation and Operating Instructions
The Series EVA2 and EVA3 Electric Actuators are designed to mount
directly onto the Series GV globe valves, creating a complete, low cost,
and compact control valve package. Floating or modulating control inputs
are available, and the 24 VAC synchronic motor includes a magnetic
clutch to protect the motor in stall conditions. Actuators are ruggedly
constructed with a fire-proof ABS housing and robust aluminum bracket.
Features include a visual position indicator and manual override to make
this actuator an excellent choice for any size area, large or small.
FEATURES
• Manual override
• Compact size
• Floating control or selectable 0-10 VDC or 4-20 mA proportional
control
• Reversible direction on proportional models
• Magnetic clutch protects motor in stall conditions
Model
EVA2F
EVA2M
EVA3F
EVA3M
Actuator
Action
Floating
Modulating
Floating
Modulating
Output
Force
225 lb
(1000 N)
225 lb
(1000 N)
337 lb
(1500 N)
337 lb
(1500 N)
Valve
Size
1˝ to 2-1/2˝
1˝ to 2-1/2˝
1˝ to 2-1/2˝
1˝ to 2-1/2˝
Compatible
Valve Models
GV2__ , GV3__
GV2__ , GV3__
GV2__, GV3__
GV2__, GV3__
SPECIFICATIONS
SERIES EVA2, EVA3
Output Force: EVA2: 225 lb (1000 N); EVA3: 337 lb (1500 N).
Power Requirements: 24 VAC.
Power Consumption: EVA2F (EVA3F): 5.5 VA; EVA2M (EVA3M):
7.5 VA.
Cycle Time: EVA2F (EVA2M): 97 sec/in. (3.8 sec/mm); EVA3F
(EVA3M): 164 sec/in. (6.45 sec/mm).
Enclosure Rating: IP40.
Housing Material: Fire-proof ABS plastic (UL94V-0).
Bracket Material: Aluminum.
Operating Temperature: 36 to 131°F (2 to 55°C).
Storage Temperature: -4 to 149°F (-20 to 65°C).
Humidity Limit: <90%, non-condensing.
Electrical Connection: Screw terminal.
Modulating Input: 0 to 10 VDC or 4 to 20 mA.
Weight: EVA2F (EVA3F): 2.43 lb (1.1 kg); EVA2M (EVA3M): 3.31 lb
(1.15 kg).
INSTALLATION
1. Tightly screw the valve connector on the valve body. Please pay
attention to the direction of the connector.
2. Install the actuator bracket on the valve connector.
3. Insert the U-type connector into the bracket, and lock the connector
nut.
4. Lift up the valve stem and put the lock nut and indicator guide onto it,
then rotate the connecting rod of the actuator and let it rotate onto the
valve stem. Use spanner to lock the locknut after adjusted into position.
5. In vertical installations, leave enough head room to unscrew the
actuator prior to servicing the valve body.
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
6. Wire the unit according to the appropriate Wiring Diagram.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: info@dwyer-inst.com
WORKING
STATE
WORKING
DIRECTION
SELECTION
WHEN WITHOUT
CONTROL SIGNAL
1
COM
2
DOWN
3
UP
M
PCB
1
POWER
SUPPLY
24 VAC
2
SUPPLY/
SIGNAL
COM
3 (+)
CONTROL SIGNAL
0-10 VDC OR
4-20 mA DC
M
EVA2F (EVA3F) WIRING DIAGRAM
Terminals
1-2
1-3
EVA2M (EVA3M) WIRING DIAGRAM
Actuator Rod
Down Extend
Up Contract
OPERATION
1. The actuator is driven by a reversible synchronous motor with a
magnetic clutch. The motor can provide stable torsion at stopping
conditions due to the magnetic force created by the motor rotor and the
magnetic clutch. When power is taken away, the motor will stop at its
current position.
2. The signal of the proportional type actuator controls the clockwise or
counter-clockwise rotation of the motor.
3. EVA2M (EVA3M) actuators can be jumper selected for 0.51, 0.59,
0.67 or 0.75 inch valve strokes. Factory stroke setting is 0.75”.
4. The input control signal is jumper selectable between 0-10V or 4-20
mA DC. Factory setting is 0-10V DC input mode.
5. Direct (DA) or Reverse (RA) direction operation is also jumper
selectable. The two states are opposite of each other.
EVA2M (EVA3M) PCB SETTING DIAGRAM
Input Control Signal
DA
Increase
Decrease
Note: Actuator must be protected from dripping water. Damage to
internal elements and motor may occur. Do not cover actuator with
material that does not permit heat exchange.
©Copyright 2009 Dwyer Instruments, Inc. Printed in U.S.A. 12/09 FR# R2-443387-00 Rev.1
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
RA
Decrease
Increase
Actuator Rod
Down
Up
MAINTENANCE
The Series EVA2 and EVA3 Electric Actuators are not field serviceable
and should be returned if repair is needed (field repair should not be
attempted and may void warranty). Make sure to cut off power supply
when disconnecting the actuator from the valve. Contact customer
service to receive a return goods authorization number before shipping.
Be sure to include a brief description of the problem plus any relevant
application notes.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: info@dwyer-inst.com
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