WE/XE/SE/XC Series
Quarter-Turn Electric Actuator
Installation & Maintenance Manual
4
12/17/19
www.atcontrols.com
IOM8011 REVISION 01
Initial Inspection
Ensure product specification on nameplate and wiring
diagram matches the application and order.
Check actuator for any physical damage that may have
occurred during shipment.
If there are any discrepancies, contact your Triac
distributor to solve the problem immediately.
Terminology
Standard actuator direction and position references are
as follows.
Close = Clockwise
Open = Counter-clockwise
For the sake of this document, these terms may be used
interchangeably.
4. Information and Features
The WE, SE, XE and XC series electric actuators are for
use on quarter-turn valves and dampers requiring
between 690 to 25900 in-lbs of torque to operate.
Actuator positioning is achieved by travel limit switches
that disconnect power to the motor when engaged by
cams attached to actuator output shaft. A thermal
protector switch is built into the motor windings to
automatically disconnect the motor power if the motor
temperature exceeds the motor rating. Torque switches
are included on all actuators, except -690 size, as a
safeguard to prevent stalling and overheating the motor.
The ratio of the motor and gear train determines the
actuator speed and utilizes two worm gear sets to
transfer the motor torque to the output shaft. The double
worm gear configuration prevents the load from back
driving the output shaft. Accurate positioning is achieved
by the indicator cam shaft connecting directly to the
output drive.
Standard Specification
Enclosure
WE: Weatherproof, IP67, CSA approved for NEMA 4, 4X
SE: Submersible, IP68, 10m for 72hrs. Type 4, 4X & 6
XE: ATEX/IECEx certified to Ex d IIB T4 Gb, IP67
XC: CSA Class I, Division 1, Group C & D, T4; Ex d IIB T4 Gb, Class I, Zone 1, AEx d IIB T4 Gb
Supply Power
12/24VDC,
24/110/220VAC 1PH, 50/60Hz, ±10%
220/380/440/460/480 VAC 3PH, 50/60Hz, ±10%
Motor
Class F reversible induction motor, fan cooled
Duty Cycle
WE/XE/SE: IEC60034-1 S4, 50-70%, 1200 starts per hour (50% max torque at 77°F (25°C))
XC: IEC60034-1 S4, 30-70%, (100% max torque at 140°F (60°C))
Operational Limit Switches
Open / Close, SPDT, 16A 1/2HP 125/250VAC, 0.6A 125VDC, 0.3A 250VDC
Auxiliary Limit Switches
Open / Close, SPDT, 16A 1/2HP 125/250VAC, 0.6A 125VDC, 0.3A 250VDC
Torque Switches
Open / Close, SPDT, 16A 1/2HP 125/250VAC, 0.6A 125VDC, 0.3A 250VDC
Stall Protection/Operating Temp
Built-in thermal protection, open 302°F (150°C) / close 207°F (97°C)
Travel Angle
0 to 90° ± 10°
Indicator
Continuous position indicator
Manual Override
Declutching mechanism
Self-Locking
Provided by double worm gearing
Travel Stops
2 x external adjustable screws
Space Heater
5W or 10W Anti-condensation
Conduit Entries
2 x 3/4" NPT
Lubrication
Grease moly (EP type)
Terminal Block
Spring loaded lever push type
Materials
Steel, Aluminum alloy, Al bronze, Polycarbonate
Ambient Temperature
WE/SE Standard: -4°F (-20°C) to 158°F (70°C)
XE/XC Standard: -4°F (-20°C) to 140°F (60°C)
Ambient Humidity
90% RH Max. (non-condensing)
Vibration
X Y Z 10g, 0.2~34Hz, 30 minutes
External Coating
Anodizing treatment before Polyester dry powder
