Belimo TRANE TAF Series, Technical Documentation Manual

Page: 78 / 168

78
I20683 - Subject to change.
TGMB24-SR
Proportional Control, Non-Spring Return, Direct Coupled, 24V, for 2 to 10 VDC and 4 to 20 mA
Technical Data TGMB24-SR
Power Supply 24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power Consumption 4.5 W (2W)
Transformer Sizing 6.5 VA (Class 2 power source)
Electrical Connection 3 ft, 18 GA plenum rated cable
1/2” conduit connector
Overload Protection electronic throughout 0° to 95° rotation
Operating Range Y 2 to 10 VDC, 4 to 20 mA
Input Impedance 100k
Ω
(0.1 mA), 500
Ω
Feedback Output U 2 to 10 VDC (max 0.5 mA)
Angle of Rotation max. 95°, adjust. with mechanical stop
Torque 360 in-lb [40 Nm]
Direction of Rotation reversible with switch. Actuator will move:
= CCW with decreasing control signal (10
➞
2V)
= CW with decreasing control signal (10
➞
2V)
Position Indication reflective visual indicator (snap-on)
Manual Override external push button
Running Time 150 seconds, constant independent of load
Humidity 5 to 95% RH non condensing
(EN 60730-1)
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 2/IP54
Housing Material UL94-5VA
Agency Listings cULus acc. to UL 60730-1/-2-14 and
CAN/CSA C22.2 No.24, CE according
to 73 / 23 / EEC
Noise Level <45dB(A)
Servicing maintenance free
Quality Standard ISO 9001
Weight 3.4 lbs [1.55 Kg]
Torque min. 360 in-lb for control of damper
surfaces up to 90 sq ft.
Application
For proportional modulation 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 crankarm 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
Ω
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 or
master-slave applications.
Operation
The actuator is not provided with and does not require any
limit switches, but is electronically protected against overload.
The anti-rotation strap supplied with the actuator will prevent
lateral movement.
The TGMB series provides 95° of rotation and a visual indicator
indicates position of the actuator. When reaching the damper or
actuator end position, the actuator automatically stops. The gears
can be manually disengaged with a button on the actuator cover.
The TGMB24-SR… actuators use a sensorless brushless DC
motor, which is controlled by an Application Specific
Integrated Circuit (ASIC). The ASIC monitors and controls the
actuator’s rotation and provides a digital rotation sensing
(DRS) function to prevent damage to the actuator in a stall
condition. Power consumption is reduced in holding mode.
Add on auxiliary switches or feedback potentiometers are
easily fastened directly onto the actuator body for signaling
and switching functions
For all accessories, see pages 110 and 132.
Dimensions
(All numbers in brackets are in millimeters.)
2.9
”
[72.9]
4.55
”
[115.6]
7.02” [178.4]
1.42”
[36]
5.6” [142.4]
2” [50.8]
5/8” to 1” [16 to 25]
1" Centered
7/16” to 11/16” [11 to 17]
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