Spring Return Direct Coupled Actuator - Honeywell VRN Series Manual

VRN PRESSURE INDEPENDENT CONTROL VALVES AND ACTUATORS
Spring Return Direct Coupled
Actuator
APPLICATION
MS4105, MS7405, MS7505, and MS8105 Spring Return
Direct Coupled Actuators (DCA) are used within heating,
ventilating, and air-conditioning (HVAC) systems. They can
drive a variety of quarter-turn, final control elements
requiring spring return fail-safe operation.
FEATURES
• Brushless DC submotor with electronic stall
protection on all models
• Self-centering shaft adaptor (shaft coupling) for wide
range of shaft sizes
• Access cover includes enclosed screw terminal strip
(22 to 14 AWG) for electrical connections.
• Models available with 3 foot 18 AWG color-coded
cable
• Durable plastic housing with built-in mechanical end
limits
• Spring return direction field selectable
• Shaft position indicator and scale
• UL (cUL) listed and CE compliant
• All models are plenum rated per UL873
SPECIFICATIONS
Actuator Type: Damper; Valve
Rotational Stroke: 95 ±3 degrees
Fail Safe Mode: Spring Return
Torque: 44 lb-in. (5 Nm)
Spring Return Torque: 44 lb-in. (5 Nm)
Spring Return Direction: By orientation
External Auxiliary Switches Available: No
Environmental Rating: NEMA2
38-00032—01
Frequency: 50 Hz; 60 Hz
Mounting: Direct Coupled
Maximum Noise Rating, Holding (dBA @ 1m):
20 (no audible noise)
Maximum Noise Rating, Driving (dBA @ 1m): 50
Rotation to Open: By switch
Rotational Stroke Adjustment:
Mechanically limited 5 degree increments
Compatible Damper Shafts:
1/4 to 1/2 in. square or 3/8 to 5/8 in. round
(6 to 13 mm square or 9 to 16 mm round)
Shaft Adapter Type: Self-centering clamping
Materials: Plenum rated plastic housing
Supply Voltage: 24 Vac +20%, -15%, 24 Vdc
Power Consumption: 5 VA
Operating Humidity Range (% RH):
5 to 95% RH, non-condensing
Ambient Temperature Range: -40°F to +149°F
(-40°C to +65°C) for two-position actuators only
Storage Temperature Range:
-40°F to +150°F (-40°C to +65°C)
Weight: 3.5 lb. (1.6 kg)
Includes: Mounting bracket, self-centering shaft adapter
Approvals:
CE: EMC 2004/108/EC; Certification Low Voltage
Directive 2006/95/EC; IEC 60730-1 and Part 2-14
C-Tick: N314
Underwriters Laboratories, Inc.: UL873
Canadian Underwriters Laboratories, Inc.:
cUL C22.2 No. 24-93
3-55/64 (98)
1-9/16
(40)
2-1/64
(55)
Fig. 5. Spring return direct coupled actuator
dimensions in inches (mm).
10
3-5/32 (80)
1-15/16
2-27/64 (61)
(49)
1-1/8
(29)
1-1/16
(27)
4-9/16
(116)
6-61/64
(177)
5-27/32
(148)
47/64
(19)
M27712A