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Belimo AFB Series Manual
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Belimo AFB Series Manual

Spring return direct coupled actuator
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AFB and AFX Series Spring Return Direct Coupled Actuator
Minimum 180 in-lb Torque
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For damper areas up to 45 sq-ft* (For lower torque, see AF, NFB, LF, or TF series)
A A pplications
3/4"
1"
New standard clamp fits standard 1/2" shafts to 1.05" jackshafts.
A A ll Actuators
have BDCM
AFB, AFX Series -
At A Glance
Torque:
180 in-lb
Power supply:
24 VAC/DC
120 VAC
230 VAC
Control signal:
On/Off
2 to 10 VDC
Multi-function**
0 to 135 Ω
Feedback signal: VDC variable**
Running time
<75 seconds
motor:
95 seconds
Adj. 70 to 220 seconds***
spring: <20 seconds
Brushless DC Motor
External direction of rotation switch
Manual override
Appliance rated cable, 18 GA (default)
Plenum rated cable, 18 GA (optional)
Built-in auxiliary switch, Two SPDT
NEMA 4 rated housing
Installation instructions......(p. 69-75)
*Based on 4 in-lb/ft
damper torque loading. Parallel blade. No edge seals. **Default 2 to 10 VDC. ***Default 150 seconds.
2
800-543-9038 USA
47
1/2"
Mount directly to 1.05" jackshafts.
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General wiring......(p. 77)
866-805-7089 CANADA
Linkage solutions are available when direct coupling is not possible.
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Start-up and checkout......(p. 78)
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Electrical operations......(p. 76)
203-791-8396 LATIN AMERICA / CARIBBEAN
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Summary of Contents for Belimo AFB Series

  • Page 1 AFB and AFX Series Spring Return Direct Coupled Actuator Minimum 180 in-lb Torque ● For damper areas up to 45 sq-ft* (For lower torque, see AF, NFB, LF, or TF series) A A pplications 3/4” 1” 1/2” New standard clamp fits standard 1/2” shafts to 1.05” jackshafts. Mount directly to 1.05”...
  • Page 2 ● Automatically compensates for damper seal wear, ensuring tight close-off. ● Added Flexibility to Select Clamp, Electrical Connection, and Running Time to fit your Specific Application with Belimo’s Flexible Line of Actuators (AFX). The Belimo Difference Customer Commitment. ● Extensive product range. Application assistance.

  • Page 3: Operation

    AFB24, AFB24-S, AFX24, AFX24-S On/Off, Spring Return, 24 V Torque min. 180 in-lb, for control of air dampers Application For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. Control is On/Off from an auxiliary contact, or a manual switch.
  • Page 4 During installation, testing, servicing and troubleshooting of this product, it may be For actuator wiring information and diagrams, refer to Belimo Wiring Guide. necessary to work with live electrical components. Have a qualifi ed licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks.
  • Page 5 AFB24 N4(H), AFB24-S N4(H), AFX24 N4, AFX24-S N4 NEMA 4, On/Off, Spring Return, 24 V Torque min. 180 in-lb, for control of air dampers Application For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. Control is On/Off from an auxiliary contact, or a manual switch.
  • Page 6 NOTE: When using AFB24 N4(H), AFB24-S N4(H), AFX24 N4, AFX24-S N4 actuators, only use accessories listed on this page. CAUTION Equipment Damage! For actuator wiring information and diagrams, refer to Belimo Wiring Guide. Actuators may be connected in parallel. Power consumption and input impedance must be observed.
  • Page 7 AFBUP, AFBUP-S, AFXUP, AFXUP-S On/Off, Spring Return, 24 to 240 VAC Torque min. 180 in-lb, for control of air dampers Application For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. Control is On/Off from an auxiliary contact, or a manual switch.
  • Page 8 During installation, testing, servicing and troubleshooting of this product, it may be For actuator wiring information and diagrams, refer to Belimo Wiring Guide. necessary to work with live electrical components. Have a qualifi ed licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks.
  • Page 9 AFBUP N4(H), AFBUP-S N4(H), AFXUP N4, AFXUP-S N4 NEMA 4, On/Off, Spring Return, 24 to 240 VAC Torque min. 180 in-lb, for control of air dampers Application For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications.
  • Page 10 NOTE: When using AFBUP N4(H), AFBUP-S N4(H), AFXUP N4, AFXUP-S N4 actuators, only use accessories listed on this page. For actuator wiring information and diagrams, refer to Belimo Wiring Guide. Typical Specification On/Off spring return damper actuators shall be direct coupled type which require...
  • Page 11 AFB24-SR, AFB24-SR-S, AFX24-SR, AFX24-SR-S Proportional, Spring Return, 24 V, for 2 to 10 VDC or 4 to 20 mA Control Signal Torque min. 180 in-lb, for control of air dampers Application For proportional modulation of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications.
  • Page 12 2 to 10 VDC control of AFB24-SR and AFX24-SR accessories listed on this page. For actuator wiring information and diagrams, refer to Belimo Wiring Guide. Typical Specification Spring return control damper actuators shall be direct coupled type which require no crank arm and linkage and be capable of direct mounting to a jackshaft up to a 1.05”...
  • Page 13 AFB24-SR N4(H), AFB24-SR-S N4(H), AFX24-SR N4, AFX24-SR-S N4 NEMA 4, Proportional, Spring Return, 24 V, for 2 to 10 VDC or 4 to 20 mA Control Signal Torque min. 180 in-lb, for control of air dampers Application For proportional modulation of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications.
  • Page 14 NOTE: When using AFB24-SR N4(H), AFB24-SR-S N4(H), AFX24-SR N4, AFX24-SR-S N4 actuators, nents could result in death or serious injury. only use accessories listed on this page. For actuator wiring information and diagrams, refer to Belimo Wiring Guide. 24 VAC Transformer Typical Specification...
  • Page 15 Power running 7.5 W These parameters can be changed by three means: consumption holding 3 W • Pre-set configurations from Belimo Transformer sizing 10 VA (Class 2 power source) • Custom configurations from Belimo Electrical connection • Configurations set by the customer using the MFT PC tool (version 3.4 or higher) AFB...
  • Page 16 NOTE: When using AFB24-MFT, AFB24-MFT-S, AFX24-MFT and AFX24-MFT-S actuators, only use accessories listed on this page. For actuator wiring information and diagrams, refer to Belimo Wiring Guide. Typical Specification Spring return control damper actuators shall be direct coupled type which require no crank arm and linkage and be capable of direct mounting to a jackshaft up to a 1.05”...
  • Page 17 The parameters can be changed by two means: pre-set and custom consumption holding 3 W confi gurations from Belimo or on-site confi gurations using the Belimo PC-Tool Transformer sizing 10 VA (Class 2 power source) / heater 25 VA software.
  • Page 18 NOTE: When using AFB24-MFT N4(H), AFB24-MFT-S N4(H), AFX24-MFT N4 and AFX24-MFT-S N4 actuators, only use accessories listed on this page. For actuator wiring information and diagrams, refer to Belimo Wiring Guide. Typical Specification Spring return control damper actuators shall be direct coupled type which require no crank arm and linkage and be capable of direct mounting to a jackshaft up to a 1.05”...
  • Page 19 The parameters noted in the Technical Data table are variable. These parameters can be changed by three means: • Pre-set configurations from Belimo • Custom configurations from Belimo • Configurations set by the customer using the MFT PC tool (version 3.4 or higher) software application.
  • Page 20 AFB24-MFT95, AFX24-MFT95 Electronic Series 90 or a 0 to 135 Ω Input Proportional, Spring Return, 24 V, for Use with Honeywell ® Proportional Potentiometric Control - Wiring Diagrams WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components.
  • Page 21 MFT PC tool software. The parameters noted in the Technical Data table are variable. These parameters can be changed by three means: • Pre-set configurations from Belimo • Custom configurations from Belimo • Configurations set by the customer using the MFT PC tool (version 3.4 or higher)
  • Page 22 AFB24-MFT95 N4(H), AFX24-MFT95 N4 Electronic Series 90 or a 0 to 135 Ω Input NEMA 4, Proportional, Spring Return, 24 V, for Use with Honeywell ® Proportional Potentiometric Control - Wiring Diagrams WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components.

  • Page 23: Installation Instructions

    Installation Instructions Quick-Mount Visual Instructions for Mechanical Installation Quick-Mount Visual Instructions 1. Rotate the damper to its fail-safe position. If the shaft rotates counterclockwise, mount the “CCW” side of the actuator out. If it rotates clockwise, mount the actuator with the “CW” side out. 2.
  • Page 24 Installation Instructions K7-2 Universal Clamp 800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN...

  • Page 25: Mechanical Installation

    2. The actuator is usually shipped with the universal clamp mounted to the “CCW” installing contractor to allow space for mounting and service of the Belimo actuator on side of the actuator. To test for adequate shaft length, slide the actuator over the the shaft.
  • Page 26 Installation Instructions Mechanical Installation position the clamp so that the pointer section of the tab is pointing to 0° (see Multiple Actuator Mounting Figure C) and the spline pattern of the clamp mates with spline of the actuator. If more torque is required than one AFB, AFX actuator can provide, a second AFB, AFX Slip the clamp over the spline.
  • Page 27 Installation Instructions Mechanical Installation Rotation Limitation The angle of rotation limiter, which is built into the actuator, is used in conjunction with the tab on the universal clamp or IND-AFB position indicator. In order to function properly, the clamp or indicator must be mounted correctly. See Figure A.
  • Page 28 Installation Instructions Mechanical Installation Manual Override Auxiliary Switches The AFB, AFX series actuators can be manually positioned to ease installation or for The AFB, AFX series actuators may be ordered with two built-in SPDT auxiliary emergency positioning. switches used for safety interfacing or signaling, for example, for fan start-up. The switch position near the fail-safe position is fixed at 10°.
  • Page 29 Installation Instructions Non-Direct Mounting Methods KH AFB C KH-AFB Crank arm Including Retaining Ring CAUTION: The retaining clip supplied with the clamp is not used to mount the KH- A A FB crank arm. The KH-AFB crank arm is used in non-direct coupled mounting applications. The KH- A A FB may also be used to simultaneously direct couple to a damper shaft and provide an additional crank arm connection to a second damper.

  • Page 30: Electrical Operation

    The electromagnetic allowing the actuator to “wait” for a much larger change in control signal due poles are switched by a special ASIC circuit developed by Belimo. Unlike the to control signal instability.

  • Page 31: General Wiring Instructions

    MAXIMUM WIRE LENGTH FOR 10VA before making any connections. Follow all instructions in this literature. If you Wire Size Max. Feet. Wire Size Max. Feet have any questions, contact the controller manufacturer and/or Belimo. 12 Ga 900 Ft. 18 Ga 220 Ft. 14 Ga 550 Ft.

  • Page 32: Startup And Checkout

    • If multiple transformers are used with one control signal, make sure all No. 1 wires are tied together and tied to control signal negative (-). • Controllers and actuators must have separate 24 VAC/VDC power sources. NOTE 2 If failure occurs within 5 years from original purchase date, notify Belimo and give details of the application. 800-543-9038 USA 866-805-7089 CANADA...

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