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27

W278_08

Standard Economizer Mode Wiring AF24-ECON-R03 US

W279_08

Override for AF24-ECON-R03 US

Override control

Wire Input Signal

Position

Application

Y1

24 VAC

Drive closed (0%)

Morning warm-up cycle

Y1

Common

Drive open (100%)

Smoke Purge

Y1

Open wire

Drive to min position

Mechanical cooling in use, 
RTU thermostat  
calls for heat

Y2

0 VDC to 
10 VDC

Min position of 
0% to 100%

Override potentiometer via a 
remote CO2 sensor/control-
ler or DDC controller

AF24-ECON-R03 US

Proportional Damper Actuator, Spring Return Safety, 24V for Stand-alone Economizer Damper Control using 3 k

7

Mixed Air Sensor, Built-in Minimum Position Adjustment.  Output Signal of 2 to 10VDC for Position Indication.

Occupied - Economizer Mode

The AF24-ECON-R03 US enters Economizer Mode when either an external relay 
or controller completes the circuit between the actuator wire 3(Y1) and MA 
sensor.  In this mode, the actuator moves proportionally to maintain a MA set-
point of 55°F (fixed).  A proportional band of 6°F modulates the actuator between 
53 and 58°F.  Also, a +/-1°F dead band eliminates hunting of the actuator, while 
maintaining suitable temperatures in the RTU mixed air chamber.

MA Dry Bulb Temperature

AF24-ECON... Position

< 53°F

Min. position

53°F < MAT < 58°F

Modulates between 
Min. Position and 100% open 

> 58°F

100% open

Accessories, see page 308.

Typical Specification

Spring return control damper actuators shall be direct coupled type which 
require no crankarm and linkage and be capable of direct mounting to a shaft up 
to a 1.05” diameter.  Actuator shall deliver a minimum output torque of 133 
in-lbs.  The actuator must provide proportional damper control in response to a 
3 k

7

 NTC thermistor, 55°F setpoint.  Actuator must have a built-in minimum 

position potentiometer.  Actuator must have minimum position override via 0 to 
10 VDC on wire 4.  Actuators shall use a brushless DC motor controlled by a 
microprocessor and be protected from overload at all angles of rotation.  Run 
time shall be independent of torque load.  A 2 to 10 VDC feedback signal shall be 
provided for position feedback or master-slave applications.  The actuator must 
be designed so that they may be used for either clock-wise or counterclockwise 
fail safe operation.  Actuators shall be cUL Approved, have a 5 year warranty, and 
be manufactured under ISO 9001 International Quality Control Standards.  
Actuators shall be as manufactured by Belimo.

Wiring Diagrams

1

Provide overload protection and disconnect as required.

2

Min-position is adjustable from 0 to 100% with a 
potentiometer on the actuator cover.

3

Actuators with plenum rated cable do not have numbers on wires; use 
color codes instead.

4

CW (default) indicates that motor drive starts at zero position.

5

A relay or switch can spring return the actuator when the RTU fan de-
energizes, or if low ambient temperature is sensed.

6

A standard relay can be used to close the sensor circuit to engage 
economizer mode, e.g. outside air changeover device like a dry bulb or 
enthalpy limit switch. 

7

A remote CO2 sensor or DDC controller with a 0 to 10 VDC output can 
change the standard relay can be used to open and close the sensor 
circuit.  This device can be a relay or a dry bulb/enthalpy limit switch.

8

Override control for Y2 only accepts 0 to 10 VDC override control.

 

 

WARNING

 Live Electrical Components!

  During installation, testing, servicing and troubleshooting of this product, it maybe 

necessary to work with live electrical components. Have a qualified licensed electrician 
or other individual who has been properly trained in handling live electrical components 
perform these tasks. Failure to follow all electrical safety precautions when exposed to live 
electrical components could result in death or serious injury.

 K20901 - 01/09 - Subject to change. © Belimo Air

controls (USA), Inc.

Содержание AF120 US

Страница 1: ...p 3 0 All Actuators have BDCM AF Series At A Glance Torque 133 in lb L L L L L L L L L L L L L Power supply 24 VAC DC L L L L L L L L L 120 VAC L L 230 VAC L L Control signal On Off L L L L L L 2 to 10 VDC L L Multi function L L 0 to 135 7 L 3 k7 NTC Type 10 thermistor L 0 to 20 V phasecut L Feedback signal 2 to 10 VDC L L L VDC variable L L L Running time motor 150 sec constant L L L L L L L L L ...

Страница 2: ...e S models L Manual override crank speeds installation L Need to change control direction Do it easily with a simple switch modulating actuators L Microprocessor controlled brushless DC motor increases actuator life span and reliability provides constant running time modulating actuators L Rugged metal housing withstands rough handling in the mechanical room L 3 ft appliance cable and conduit conn...

Страница 3: ...nt damage to the actuator in a stall condition The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches The AF24 S US version is provided with 2 built in auxiliary switches These SPDT switches are provided for safety interfacing or signaling for example for fan start up The switching function at the fail safe position is fixed at 5 the other switch fu...

Страница 4: ... mechanism accessible on its cover Actuators shall use a brushless DC motor and be protected from overload at all angles of rotation Run time shall be constant and independent of torque If required 2 SPDT auxiliary switches shall be provided with one switch having the capability of being adjustable Actuators with switches must be constructed to meet the requirement for Double Insulation so an elec...

Страница 5: ...ches The actuators are Double Insulated so a ground connection is not required The AF120 230 S US version is provided with 2 built in auxiliary switches These SPDT switches are provided for safety interfacing or signaling for example for fan start up The switching function at the fail safe position is fixed at 5 the other switch function is adjustable between 25 to 85 Dimensions Inches mm 1 97 3 1...

Страница 6: ...se or counterclockwise fail safe operation Actuators shall have a manual positioning mechanism accessible on its cover Actuators shall use a brushless DC motor and be protected from overload at all angles of rotation Run time shall be constant and independent of torque If required 2 SPDT auxiliary switches shall be provided with one switch having the capability of being adjustable Actuators must b...

Страница 7: ...slave applications Operation The AF series actuators provide true spring return operation for reliable fail safe application and positive close off on air tight dampers The spring return system provides constant torque to the damper with and without power applied to the actuator The AF series provides 95 of rotation and is provided with a graduated position indicator showing 0 to 95 The AF has a u...

Страница 8: ...d linkage and be capable of direct mounting to a jackshaft up to a 1 05 diameter The actuator must provide proportional damper control in response to a 2 to 10 VDC or with the addition of a 500 7 resistor a 4 to 20 mA control input from an electronic controller or positioner The actuators must be designed so that they may be used for either clockwise or counterclockwise fail safe operation Actuato...

Страница 9: ...microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuator s exact zero position The ASIC monitors and controls the brushless DC motor s rotation and provides a digital rotation sensing function to prevent damage to the actuator in a stall condition The actuator may be stalled anywhere in its normal rotation without the need of mechanical end ...

Страница 10: ...ich require no crankarm and linkage and be capable of direct mount ing to a jackshaft up to a 1 05 diameter The actuator must provide proportional damper control in response to a 2 to 10 VDC or with the addition of a 5007 resistor a 4 to 20 mA control input from an electronic controller or positioner The actuators must be designed so that they may be used for either clockwise or counterclockwise f...

Страница 11: ...l rotation without the need of mechanical end switches Power consumption is reduced in holding mode Installation Refer to AF Section of the Standard Actuation and Accessories Technical Documentation Dimensions Inches mm 1 97 3 15 80 3 86 98 3 25 82 7 2 24 57 50 1 93 49 2 64 67 0 26 6 5 5 85 148 5 10 47 266 0 35 9 0 39 10 0 65 16 5 0 19 5 K4 2 US supplied 1 2 Centered Default 3 4 Centered Field Sel...

Страница 12: ...st have minimum position override via 0 to 10 VDC on wire 4 Actuators shall use a brushless DC motor controlled by a microprocessor and be protected from overload at all angles of rotation Run time shall be independent of torque load A 2 to 10 VDC feedback signal shall be provided for position feedback or master slave applications The actuator must be designed so that they may be used for either c...

Страница 13: ...processor The microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuator s exact zero position The ASIC monitors and controls the brushless DC motor s rotation and provides a digital rotation sensing function to prevent damage to the actuator in a stall condition The actuator may be stalled anywhere in its normal rotation without the need of m...

Страница 14: ...per actuators shall be direct coupled type which require no crankarm and linkage and be capable of direct mounting to a jackshaft up to a 1 05 diameter The actuator must provide proportional damper control in response to a 0 to 20 V phasecut control output from an electronic controller or positioner The actuators must be designed so that they may be used for either clockwise or counterclockwise fa...

Страница 15: ...f its universal clamp and anti rotation bracket A crankarm and several mounting brackets are available for damper applications where the actuator cannot be direct coupled to the damper shaft The spring return system provides minimum specified torque to the application during a power interruption The AF24 MFT US actuator is shipped at 5 5 from full fail safe to provide automatic compression against...

Страница 16: ...ts without the need of an electrical ground connection The ZG R01 500 7 resistor may be used WARNING Live Electrical Components During installation testing servicing and troubleshooting of this product it maybe necessary to work with live electrical components Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these...

Страница 17: ...dback potentiometers using DRS The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches The AF24 MFT95 US is mounted directly to control shafts up to 1 05 diameter by means of its universal clamp and anti rotation bracket A crankarm and several mounting brackets are available for damper applications where the actuator cannot be direct coupled to the d...

Страница 18: ...Honeywell T675A Morning Warmup Shunting Resistor Line Volts 2 1 3 5 1 Common Blk 2 Hot Red 3 W Wht 4 R Wht 5 B Wht 6 U5 Output 2 10 VDC AF24 MFT95 US To other actuators Line Volts No of actuators Resistance 2 13007 3 9107 4 7687 B R W W R B 1 3 2 5 4 1 Common Blk 2 Hot Red 3 W Wht 4 R Wht 5 B Wht 6 U5 Output 2 10 VDC AF24 MFT95 US Line Volts 24 VAC Transformer Honeywell Q209A Minimum Position Pote...

Страница 19: ...the CCW side of the actuator out If it rotates clockwise mount the actuator with the CW side out 2 If the universal clamp is not on the correct side of the actuator move it to the correct side 3 Slide the actuator onto the shaft and tighten the nuts on the V bolt with a 10mm wrench to 6 8 ft lb of torque 4 Slide the anti rotation strap under the actuator so that it engages the slot at the base of ...

Страница 20: ...he AF has a unique manual positioning mechanism which allows the setting of any damper position within its 95 of rotation A pre tensioned spring automatically tightens damper when power is applied to the actuator compensating for damper seal deterioration The actuator is shipped at 5 5 from full fail safe to provide automatic compression against damper gaskets for tight shut off When power is appl...

Страница 21: ...orque 8 Slip the stud of the anti rotation strap into the slot at the base of the actuator The stud should be positioned approximately 1 16 of an inch from the closed end of the slot Bend the strap as needed to reach the duct Attach the strap to the duct with 8 self tapping screws 9 If damper position indication is required use the optional IND AF2 pointer See Figure A Jackshaft Installation The A...

Страница 22: ...st be mounted for short shaft mounting See pages 8 10 1 Position the damper to its minimum position by using the manual crank or by providing the appropriate control signal to the AF24 modulating type actuator 2 Place the indicator on to the actuator spline in the approximate position shown in Figure D Fasten it with the retaining clip Note that the mounting orientation is different than the mount...

Страница 23: ...may be tested without power at the actuator Refer to the manual positioning section of the instructions Move the damper to its full non fail safe position using the manual crank Disengage the manual position mechanism and have the damper go to full fail safe position Correct any mechanical problems and retest Auxiliary Switches The AF series actuators may be ordered with 2 built in SPDT auxiliary ...

Страница 24: ...AF crankarm The KH AF 1 crankarm is used in non direct coupled mounting applications The KH AF 1 may also be used to simultaneously direct couple to a damper shaft and provide an additional crank arm connection to a second damper The KH AFV V bolt kit must be used for this non direct application see illustration this page TWO SIZES ARE AVAILABLE KH AF For round shafts up to 3 4 or square shafts up...

Страница 25: ... dampers are fully closed and that edge and blade seals are always properly compressed Motor Position Detection Belimo brushless DC motors eliminate the need for potentiometers for positioning in modulating type actuators Inside the motor are three Hall Effect sensors These sensors detect the spinning rotor and send pulses to the microprocessor which counts the pulses and calculates the position t...

Страница 26: ...owing rules are followed 1 The transformers are properly sized 2 All No 1 wires from all actuators are tied together and tied to the negative leg of the control signal See wiring diagram Wire Length for AF Actuators Keep power wire runs below the lengths listed in the Figure H If more than one actuator is powered from the same wire run divide the allowable wire length by the number of actuators to...

Страница 27: ... operates properly Step 7 Step 5 5 Check input signal with a digital volt meter DVM Make sure the input is within the range of the actuator For AF24 SR US this is 2 to 10 VDC or 4 to 20 mA NOTE The input signal must be above the 2 VDC or 4 mA to have the actuator move Input voltage or current should be 1 of what controller s adjustment or programming indicate Controller output actuator input is co...

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