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MS7520H2208
Adjustable Zero & Span Voltage Input or Floating Input Actuator - 175
lb-in, Spring Return , 24 Vac +/-20%, 50 Hz, 60 Hz, Includes 2
internal auxiliary switches
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Product Specifications Literature and
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Overview
MS4120, MS7520, MS8120 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
o Brushless DC submotor with electronic stall protection for
floating/modulating models.
o Brush DC submotor with electronic stall protection for 2-position
models.
o Self-centering shaft adapter (shaft coupling) for wide range of
shaft sizes.
o Models available for use with two-position, single pole single
throw (spst), line- (Series 40) or low- (Series 80) voltage controls.
o Models available for use with floating or switched single-pole,
double-throw (spdt) (Series 60) controls.
o Models available for use with proportional current or voltage
(Series 70) controls.
o Models available with combined floating/modulating control in a
single device.
o Models available with adjustable zero and span.
o Models available with line-voltage internal end switches.
o Access cover to facilitate connectivity.
o Metal housing with built-in mechanical end limits.
o Spring return direction field-selectable.
o Shaft position indicator and scale.
o Manual winding capability with locking function.
o UL (cUL) listed and CE compliant.
o All Models are plenum-rated per UL873.
Product Specifications Back To Top
Description Direct Coupled, General Purpose, Spring Return Actuator
Actuator Type Damper
Actuator Type Valve
Application Type HVAC
Torque/Force (lb-in., lbf) 175 lb-in.
Torque/Force (Nm, N) 20 Nm
Fail Safe Mode Spring Return
Control Signal Floating
Control Signal (0)2-10 Vdc (4-20 mA w/500 ohm resistor)
Supply Voltage 24 Vac 20%
Number of Internal Auxiliary Switch 2
Switch Ratings 250 Vac, 5 A res (3 A ind)
External Auxiliary Switches Available Yes, SW2-US
Shaft Adapter Type Self-centering clamping
Feedback 2-10 Vdc (max. output: 1.0 mA)
Manual operation Manual crank
Spring Return Torque/Force (lb-in., lbf) 175 lb-in.
Spring Return Torque/Force (Nm, N) 20 Nm
Maximum Stall Torque/Force (lb-in., lbf) 300 lb-in.
Maximum Stall Torque/Force (Nm, N) 34 Nm
Mounting Direct Coupled
Frequency 60 Hz
Frequency 50 Hz
Rotational Stroke 95 3 degrees
Rotational Stroke Adjustment Mechanically limited 5 degree increments
Rotation to Open By switch
Spring Return Direction By orientation
Timing, Maximum Spring Return (sec) 20 sec
Timing, Nominal Driving @ 60 Hz (sec) 90 sec
Dimensions (in.) 9.72 in high x 3.94 in wide x 2.95 in deep
Dimensions (mm) 247 mm high x 100 mm wide x 75 mm deep
Weight (lb) 6 lb
Weight (kg) 2.72 kg
Compatible Damper Shafts (in.) 3/8 to 1.06 round or 3/8 to 11/16
square
Compatible Damper Shafts (mm) 10 to 27 round or 10 to 18 square
Materials Aluminum housing, Plenum rated plastic access cover
Power Consumption (Driving) 16 VA
Power Consumption (Holding) 5 VA
Input Impedance 145K ohm
Electrical Connections Enclosed screw terminal strip (22 to 14 AWG)
Temperature Range, Ambient (F) -40 F to +140 F
Temperature Range, Ambient (C) -40 C to +60 C
Temperature Range, Storage (F) -40 F to +158 F
Temperature Range, Storage (C) -40 C to +70 C
Operating Humidity Range (% RH) 5 to 95% RH, non-condensing
Maximum Noise Rating, Driving (dB(A) @ 1m) 40
Maximum Noise Rating, Holding (dB(A) @ 1m) 20 (no audible noise)
Environmental Rating NEMA2
Approvals, Underwriters Laboratories Inc UL873, Plenum Rated
Approvals, Canadian Underwriters Laboratories cUL C22.2 No. 24-93
Approvals, CE 89/336/ECC, 73/23/EEC
Approvals, C-Tick N314
Includes Mounting bracket, self-centering shaft adapter, 3mm crank
Comments Integral 1/2 in. NPSM conduit connection.
Literature and other Resources Download
Back To Top
Product Data - (S05, S10, S20 Series: MS4105, MS4110, MS4120, MS71xx,
MS7505, MS7510, MS7520,MS8105,MS8110, MS8120 Spring Return Direct
Coupled Actuators)
Specification Data - (S20 Series (MS4120, MS7520, MS8120) Spring
Return Direct Coupled Actuators)
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Category: SUPPLIER DIRECTORY => HONEYWELL, INC
February 2009
> Damper Actuators > Spring Return > MS7520
Commercial Building Controls : Dampers and Damper Actuators : HVAC Damper Actuators : Spring Return Damper Actuators : Modulating/Floating 24 Vac/dc SR : MS7520H2208/U
Floating input actuator with 175 lb-in spring return and 2 auxiliary switches
