Dwyer EVA1 - Manual

W
P
Series EVA1 Electric Actuator
Bulletin V-7
Specifications - Installation and Operating Instructions
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: [email protected]
The Series EVA1 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
SPECIFICATIONS
Output Force: 112 lb (500 N).
Power Requirements: 24 VAC.
Power Consumption: EVA1F: 2.5 VA; EVA1M: 4.5 VA.
Cycle Time: 262 sec/in. (10.3 sec/mm).
Enclosure Rating: IP54.
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: EVA1F: 1.81 lb (0.8 kg); EVA1M: 1.92 lb (0.9 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.
6. Wire the unit according to the appropriate Wiring Diagram.
Model
EVA1F
EVA1M
Actuator
Action
Floating
Modulating
Output
Force
112 lb (500 N)
112 lb (500 N)
Valve
Size
1˝ to 2˝
1˝ to 2˝
Compatible
Valve Model
GV1__
GV1__
3-3/16 SQ
[97]
3-25/64
[87]
7/16
[11.1]
4-3/4
[120] RED/BLUE
INDICATOR
NUT U-TYPE CONNECTOR
KNOB
POWER
CONNECT
CONNECTOR
ACTUATOR BRACKET
Bulletin V7 12/29/05 8:34 AM Page 1