Spring, 270in-lb, MFT, 24VApplication | For fail-safe, modulating control of dampers in HVAC systems. Actuator sizing
should be done in accordance with the damper manufacturer?s specifications. A
feedback signal is provided for position indication or master-slave applications.
Two EF?s can be piggybacked for torque loads of up to 540 in-lbs. Minimum
3/4? diameter shaft. OR Maximum of three EF?s can be piggybacked for torque
loads of up to 810 in-lbs. Minimum 1? diameter shaft. Master-Slave wiring for
either configuration. |
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Servicing | maintenance free |
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Power Supply | 24 VAC�20%, 50/60Hz, 24 VDC+20%/-10% |
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Power Consumption Running | 9.5 W |
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Power Consumption Holding | 4.5 W |
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Transformer Sizing | 16 VA (class 2 power source) |
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Electrical Connection | 3ft [1m], 18 GA appliance cable with 1/2? conduit connector |
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Overload Protection | electronic throughout 0� to 95� rotation |
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Input Impedance | 100 k ? for 2 to 10 VDC (0.1 mA), 500 ? for
4 to 20 mA, 1500 ? for PWM, floating point
and On/Off |
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Angle of Rotation | Max. 95�, adjustable with mechanical end
stop, 35� to 95� |
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Direction of Rotation (Motor) | reversible with built-in switch |
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Manual Override | 5 mm hex crank (3/16? Allen), supplied |
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Running Time (Motor) | 150 sec (default), variable (60 to 150 sec) |
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Ambient Temperature Range | 22�F to 122�F [-30�C to 50�C |
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Storage Temperature Range | 40�F to 176�F [-40�C to 80�C] |
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Housing | NEMA 2, IP54, UL enclosure type 2 |
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Agency Listings | cULus acc. to UL60730-1A/-2-14, CAN/CSA
E60730-1:02, CE acc. to 2004/108/EC |
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Noise Level (Motor) | �45.3 dB (A) @ 150 sec, run time dependent |
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Operating Range Y | 2 to 10 VDC, 4 to 20 mA w/ ZG-R01 (500 ?,
1/4 W resistor), variable (VDC, PWM, floating
point, on/off) |
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Direction of Rotation (Fail-Safe | reversible with CW/CCW mounting |
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Position Indication | visual indicator, 0� to 95� (0� is full spring
return position) |
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Running Time (Fail-Safe) | <20 sec @ -4�F to 122�F [-20�C to 50�C], <
60 sec @ -22�F [-30�C] |
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Noise Level (Fail-Safe) | �71 dB (A) |
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Feedback Output U | 2 to 10 VDC, 0.5 mA max, VDC variable |
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Ambient Humidity | max. 95% RH non-condensing |
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Electrical protection | actuators are double insulated |
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Override Control | min. position = 0% , mid. Position = 50% ,
max. position = 100% (Default) |
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Shaft Diameter | 1/2? to 1.05? round, centers on 3/4? with
insert, 1.05? without insert |
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Torque | 270 in-lbs [30 Nm] minimum |
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Angle of Rotation Adaptation o | off (default) |
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Housing Materia | Aluminum die cast and plastic casing |
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MFT-P | Belimo MFT configuration software (hardware not included). |
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ZTH US | Handheld programming tool w/ ZK1-GEN, ZK2-GEN, ZK6-GEN |
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ZK1-GEN | Cable for ZTH US to diagnostic/programming socket. |
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ZK2-GEN | Cable for ZTH US to actuators w/o diagnostics socket. |
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ZG-100 | Univ. right angle bracket (17? H x 11-1/8? W x 6? base). |
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ZG-DC1 | Damper clip for damper blade, 3.5? width. |
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ZG-DC2 | Damper clip for damper blade, 6? width. |
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AV8-25 | 9.8? shaft extension for 5/16? to 1? diameter shafts. |
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PS-100 | Actuator power supply and control simulator |
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SGA24 | Positioner control for modualting actuators (surface mount). |
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SGF24 | Positioner control for modulating actuators (flush mount). |
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ADS-100 | Analog to digital switch for modulating actuators. |
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ZG-R01 | 4 to 20 mA adaptor, 500�, 1/4 W resistor w 6? pigtail wires. |
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ZG-X40 | 120 to 24 VAC, 40 VA transformer. |
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PTA-250 | Pulse width modulation interface for modulating actuators. |
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IRM-100 | Input rescaling module for modulating actuators. |
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EF-P | Anti-rotation bracket EFB(X)/GKB(X)/GMB(X). |
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IND-EFB | EFB(X) position indicator. |
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K9-2 | Standard EFB(X) clamp (1/2? to 1.05?). |
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KG10A | Ball joint for 3/8? diameter rod, zinc plated. |
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KH10 | Univ. crankarm, slot 21/64? w, for 9/16? to 1? dia. shafts. |
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KH-EFB | EFB(X) crankarm (with 1.05? diameter shaft pass through). |
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SH10 | Push rod for KG10A ball joint (36? L, 3/8? diameter). |
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ZG-120 | Jackshaft mounting bracket. |
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ZG-EFB | EFB(X) crankarm adaptor kit. |
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ZG-JSA-3 | 1.05? diameter jackshaft adaptor (12? L). |
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TF-CC US | Cable conduit connector, 1/2?. |
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UK24BAC | BACnet gateway module for up to 8 MFT actuators. |
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UK24LON | LON gateway module for up to 8 MFT actuators. |
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UK24MOD | MODbus gateway module for up to 8 MFT actuators. |
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ZG-R02 | 50% voltage divider kit (resistors with wires). |
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ZG-SGF | Mounting plate for SGF. |
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Operation | The EF..24-MFT actuator provides 95� of rotation and is provided with a
graduated position indicator showing 0� to 95�. The actuator will synchronize
the 0� mechanical stop or the physical damper mechanical stop and use this
point for its zero position during normal control operations. A unique manual
override allows the setting of any actuator position within its 95� of rotation
with no power applied. This mechanism can be released physically by the use of
a crank supplied with the actuator. When power is applied the manual override
is released and the actuator drives toward the fail-safe position. The actuator
uses a brushless DC motor which is controlled by an Application Specific
Integrated Circuit (ASIC) and a microprocessor. The microprocessor provides
the intelligence to the ASIC to provide a constant rotation rate and to know
the actuator?s exact position. The ASIC monitors and controls the brushless
DC motor?s rotation and provides a Digital Rotation Sensing (DRS) function to
prevent damage to the actuator in a stall condition. The position feedback signal
is generated without the need for mechanical feedback potentiometers using
DRS. The actuator may be stalled anywhere in its normal rotation without the
need of mechanical end switches. The EF..24-MFT is mounted directly to control
shafts up to 1.05? diameter by means of its universal clamp and anti-rotation
bracket. A crank arm 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 EF..24-MFT actuator is shipped at 5� (5� from
full fail-safe) to provide automatic compression against damper gaskets for tight
shut-off.
Installation Note: Use flexible metal conduit. Push the UL listed conduit fitting
device over the actuator?s cable to butt against the enclosure. Screw in conduit
connector. Jacket the actuator?s input wiring with UL listed flexible conduit.
Properly terminate the conduit in a suitable junction box. |
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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? diameter. The actuator must provide modulating damper control in response to a 2 to 10 VDC or, with the addition of a 500? 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 counter clockwise fail-safe operation. 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 constant, and independent of torque. A 2 to 10 VDC feedback signal shall be provided for position feedback or master slave applications. Actuators with auxiliary switches must be constructed to meet the requirements for Double Insulation so an electrical ground is not required to meet agency listings. Actuators shall be cULus listed and have a 5 year warranty, and be manufactured under ISO 9001 International Quality Control Standards. Actuators shall be as manufactured by Belimo. |
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Product Family
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