EA12 Two Position Spring Return MODEL The Model EA12 actuator is a spring return gear driven crankshaft actuator for two position operation of dampers, values or other equip- ment that requires return to normal position upon power interruption. The hardened steel crankshaft is driven through a train of precision hobbed gears. The actuator is driven by a shaded pole motor that is completely submerged in oil and sealed in an aluminum case to assure long life and minimum maintenance. The gear train of the EA12 crank actuator is also sealed in oil. Working in conjunction with primary loop controllers, these power units are ideal for ON-OFF control of valves and dampers. The EA12 travel time is 20 seconds and its travel limit is 170 degrees clockwise. The spring return is counterclockwise to the original position when de-energized. The Model EA12-00000-000-0-00 is UL/CSA listed. All others models are UL/cUL listed. EA12 is compatible with the VB-7000 and VB-9000 valves in this catalog. • Spring return two position operation • 60 in-lbs torque – 20 sec. travel • Oil immersed motor and gear train • Compatible with VB series valves Rotary Actuator Specification Sheet
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MODEL
The Model EA12 actuator is a spring return gear driven crankshaft actuator for two position operation of dampers, values or other equip-ment that requires return to normal position upon power interruption. The hardened steel crankshaft is driven through a train of precision hobbed gears. The actuator is driven by a shaded pole motor that is completely submerged in oil and sealed in an aluminum case to assure long life and minimum maintenance. The gear train of the EA12 crank actuator is also sealed in oil. Working in conjunction with primary loop controllers, these power units are ideal for ON-OFF control of valves and dampers. The EA12 travel time is 20 seconds and its travel limit is 170 degrees clockwise. The spring return is counterclockwise to the original position when de-energized.
The Model EA12-00000-000-0-00 is UL/CSA listed. All others models are UL/cUL listed. EA12 is compatible with the VB-7000 and VB-9000 valves in this catalog.
• Spring return two position operation• 60 in-lbs torque – 20 sec. travel• Oil immersed motor and gear train• Compatible with VB series valves
Rotary ActuatorSpecification Sheet
EA 12 00
ModelSeries
Base Model Reserved
0 120Vac, 60Hz3 240Vac, 60Hz5 24Vac, 60Hz
Volts/Frequency
Options
00 None08 One auxiliary SPDT
switch
000
Options
Reserved
Volts/Freq
Logo/Label
00
Specials
00 None
Specials
E Eurotherm
Logo/Label
Ordering codes
EA12 Two Position Spring Return Specification SheetEurotherm Part No. HA136726-6-8 REV 1 August 2011 2
Specifications
2 Wire, ON-OFF60 in-lbs – 20 sec no load travel timeCW 170° – 20 Seconds when power applied5-3/4” H x 5-3/8” W x 6-9/16” D7lbs.Die cast aluminum with 2 conduit openings-40 to 136°F (-40 to 58°C)5 to 95% RH, non-condensing70 watts running, 25 watts holdingOutput shaft horizontal. Allow 6” (152mm) clearance above wiring compartmentSPDT - makes or breaks circuit at powered end of stroke120Vac – 2A full load, 12A locked rotor240Vac – 1A full load, 6A locked rotor
Control action:Torque:
Shaft rotation:
Dimensions:Weight:
Case:
Ambient temperature:Humidity:
Power consumption:
Mounting:
Auxiliary switch (optional):
Invensys Systems, Inc. 44621 Guilford Drive Suite 100, Ashburn, VA, 20147, USA(+1 703) 724 7300
Eurotherm: International sales and service www.eurotherm.com
© Copyright Eurotherm Limited 2011
Invensys, Eurotherm, the Eurotherm logo, Chessell, EurothermSuite, Mini8, Eycon, Eyris, EPower nanodac, Foxboro and Wonderware aretrademarks of Invensys plc, its subsidiaries and affiliates. All other brands may be trademarks of their respective owners.
All rights are strictly reserved. No part of this document may be reproduced, modified, or transmitted in any form by any means, nor may it bestored in a retrieval system other than for the purpose to act as an aid in operating the equipment to which the document relates, without the priorwritten permission of Eurotherm Limited.
Eurotherm Limited pursues a policy of continuous development and product improvement. The specifications in this document may therefore bechanged without notice. The information in this document is given in good faith, but is intended for guidance only.
Eurotherm Limited will accept no responsibility for any losses arising from errors in this document.
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ED64
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