Spring, 270in-lb, 2-10V, 24V| Application | For fail-safe, modulating control of dampers in HVAC systems. Actuator sizing
should be done in accordance with the damper manufacturer?s specifications.
The actuator is mounted directly to a damper shaft up to 1.05? in diameter
by means of its universal clamp. A crank arm and several mounting brackets
are available for applications where the actuator cannot be direct coupled to
the damper shaft. The actuator operates 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. A 2 to 10 VDC feedback signal is provided for position
indication. Not to be used for a master-slave application |
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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 | 8 W |
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| Power Consumption Holding | 4.5 W |
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| Transformer Sizing | 14 VA (class 2 power source) |
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| Electrical Connection | 3 ft [1 m], 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 |
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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) | 95 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) | �56.5 dB (A) |
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| Operating Range Y | 2 to 10 VDC, 4 to 20 mA w/ ZG-R01 (500 ?,
1/4 W resistor) |
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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 |
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| Housing Material | Aluminum die cast and plastic casing |
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| Electrical protection | actuators are double insulated |
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| Humidity | max. 95% RH non-condensing |
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| Shaft Diameter | 1/2? to 1.05? round, centers on 3/4? with
insert, 1.05? without inser |
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| Torque | 270 in-lbs [30 Nm] minimum |
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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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| 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-SR series actuators provide true spring return operation for reliable
failsafe 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 EF..24-SR series provides 95� of rotation and is
provided with a graduated position indicator showing 0� to 95�. The EF..24-
SR 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 fail-safe 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 switches.
The EF..24-SR 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. 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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