Belimo TRANE TAF Series, Техническая документация инструкция

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I20683 - Subject to change.
TTF24-3
On-off, Spring Return Fail-Safe, Reversible, Floating Point, 24V
Torque min. 18 in-lb, for control of air dampers
Application
For modulation or on-off 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 from 1/4”
up to 1/2” in diameter by means of its universal clamp, 1/2”
shaft centered at delivery. A crank arm and several mounting
brackets are available for applications where the actuator
cannot be direct coupled to the damper shaft.
Control is floating point from a triac or relay, or on-off from
an auxiliary contact on a fan motor contactor, controller, or
manual switch.
Operation
The TTF 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 consistent
torque to the damper with, and without, power applied to the
actuator.
The TTF series provides 95° of rotation and is provided with a
graduated position indicator showing 0° to 95°.
The TTF24-3 uses a brushless DC motor which is controlled by
an Application Specific Integrated Circuit (ASIC) and a micro-
processor. The microprocessor provides the intelligence to the
ASIC to provide a constant rotation rate. 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. Power consumption is reduced in holding mode.
For all accessories, see pages 110 and 132.
Dimensions
[All numbers in brackets are in millimeters.]
Technical Data TTF24-3
Power supply 24 VAC ± 20% 50/60 Hz
Power consumption running: 2.5 W ; holding: 1 W
Transformer sizing 4 VA (class 2 power source)
Electrical connection TTF24-3 3 ft, 18 GA plenum rated cable
Overload protection electronic throughout 0° to 95° rotation
Input impedance 1000
Ω
(0.6w) control inputs
Angle of rotation max. 95°, adjust. with mechanical stop
Torque 18 in-lb [2 Nm]
Direction of rotation spring: reversible with cw/ccw mounting
motor: reversible with built-in switch
Position indication visual indicator, 0° to 95°
(0° is spring return position)
Running time motor: 95 sec constant,
independent of load
spring: < 25 sec
@-4°F to +122°F [-20°C to +50°C]
< 60 sec
@-22°F [-30°C]
Humidity 5 to 95% RH non-condensing
Ambient temperature -22°F to +122°F [-30°C to +50°C]
Storage temperature -40°F to +176°F [-40°C to +80°C]
Housing NEMA type 2 /IP42
Housing material UL94-5VA
Agency listings cULus listed acc. to UL 60730-1
Noise level max: running < 35 db (A)
spring return 62 dB (A)
Servicing maintenance free
Quality standard ISO 9001
Weight TTF24-3 1.4 lbs (0.6 kg.)
.
0.43" [11]
0.77" [19.5]
4.5"
[114]
0.2"
[5.2] 1.57"
[40]
6.28"
[159.5]
3.0"
[76.2]
3.30"
[83.72]
2.40" [61]
0.68" [16.7]
Standard:
1/4" to 1/2"
1/4" to 5/16"
D096
62
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