Belimo GM24 US User manual

GM24-SR US
Proportional damper actuator, non-spring return, direct coupled,
24 V for 2 to 10 VDC and 4 to 20 mA control signal.
G20492-IG-Subject to change. © Belimo Aircontrols (USA), Inc.
®
Torque min. 266 in-lb, for control of air dampers
Application
For proportional modulation of dampers in HVAC systems.
Actuator sizing should be done in accordance with the damper
manufacturer’s specifications.
The actuator mounts directly to the damper operating shaft
with a universal V-bolt clamp assembly.
Operation
The actuator operates in response to a 2 to 10 VDC or, with
the addition of a 500Ωresistor, 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.
The anti-rotation strap supplied with the actuator will prevent lat-
eral movement of the actuator. The angle of rotation is mechan-
ically limited to 95°. When reaching the damper or actuator end
position, the motor stops automatically. The gears can be man-
ually disengaged by simply pressing down the spring loaded but-
ton on the actuator cover. When this button is pressed down,
the damper blades can be adjusted by hand. The position of the
actuator is indicated by means of a scale reading 0 to 1.
The GM uses a brushless DC motor which is controlled by an
Application Specific Integrated Circuit (ASIC). The ASIC moni-
tors and controls the actuator’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 nor-
mal rotation without the need of mechanical end switches.
Dimensions [All numbers in brackets are in millimeters.]
Technical Data GM24-SR US
Power supply 24VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power consumption running: 3 W; holding: 2W
Transformer sizing 7 VA (class 2 power source)
Electrical connection 3 ft, 18 GA appliance cable
1/2”conduit connector
Overload protection Electronic throughout 0 to 95°rotation
Operating range Y 2to10VDC, 4 to 20 mA
Input impedance 100 kΩ(0.1 mA), 500Ω
Feedback output U 2 to 10 VDC, 0.5 mA max
Angle of rotation mechanically limited to 95°
Torque min 266 in-lb [30 Nm]
Direction of rotation reversible with switch A/B
A = CW with an increase in voltage
B = CCW with an increase in voltage
Position indication 0 to 1 and reversible indicator
Running time 135 sec. independent of load
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
Housing rating UL94V-0 (flammability rating)
Agency listings UL873 listed, CSA C22.2 No.24 certified, CE
Noise level max. 45 dB (A)
Servicing maintenance free
Quality standard ISO 9001
Weight 4.2 lbs (1.9 kg.)
LISTED
94D5
TEMP. IND &
REG. EQUIP.
UL

104
2.12"
[54] 1.02" [26]
3.15"
[80]
4.88"
[124]
1.18" [30]
8.43" [214]
9.49" [241]
15/32" to 3/4" [12 to 20]
3/8" to 5/8" [9.5 to 16]
D012
©

GM
105
G20492-Subject to change. © Belimo Aircontrols (USA), Inc.
®
Accessories
IRM-100 Input scaling module
KH8 Universal crankarm
KG10 Ball Joint
NSV24 Battery back-up module
P…Feedback potentiometer
PTA-250 Pulse width modulation interface
SGA24 Min. and/or manual positioner in NEMA 4 housing
SGF24 Min. and/or man. positioner for flush panel mount
S1,S2 Auxiliary switch
Tool-06 8mm and 10 mm wrench
ZAD24 Digital position indication
ZDB-GM Angle of rotation limiter (Series 2)
ZG-H2 Actuator operator handle
ZG-GM2 Crankarm adaptor kit
ZG-R01 500Ωresistor for 4 to 20 mA
ZG-100 Universal mounting bracket
ZG-101 Universal mounting bracket
ZG-102 Multiple actuator mounting bracket
ZG-103 Universal mounting bracket
ZG-104 Universal mounting bracket
ZS-100 Weather shield (metal)
ZS-150 Weather shield (polycarbonate)
ZS-260 Explosion-proof housing
ZS-300 NEMA 4X housing
NOTE: When using GM24-SR US actuators, use only
the accessories listed on this page.
Wiring diagrams
GM24-SR US - Typical Specification:
Control damper actuators shall be electronic direct coupled
type which require no crankarm and linkage. Actuators shall
be UL listed and CSA certified, have a 2 year warranty, and
be manufactured under ISO 9001 International Quality Control
Standards. Actuators shall have reversing switch and gear
disengagement button on the cover. Actuators shall use a
brushless DC motor and be protected from overload at all
angles of rotation. Run time shall be constant and independ-
ent of torque. The actuator must provide proportional damper
control in response to a 2 to 10 VDC or, with the addition of a
500Ωresistor, a 4 to 20 mA control input from an electronic
controller or positioner. A 2 to 10 VDC feedback signal shall
be provided for position indication or master-slave applica-
tions. Actuators shall be as manufactured by Belimo.
2
1Provide overload protection and disconnect as required.
Actuators may be connected in parallel. Power con-
sumption and input impedance must be observed.
4 to 20 mA control of GM24-SR US with 2 to 10 VDC feed-
back output.
0 to 10 VDC control of GM24-SR US
2
1
3
Provide overload protection and disconnect as required.
Connect actuator common (wire 1) to negative (–) leg
of control circuits only.
Up to 4 actuators may be connected in parallel. With 4
actuators wired to one 500Ωresistor, a +2% shift of
control signal may be required. Power consumption
must be observed.
The 500Ωresistor converts the 4 to 20 mA control sig-
nal to 2 to 10 VDC.
Actuator may also be powered by 24 VDC.
4
5
GM24-SR US
Proportional damper actuator, non-spring return, direct coupled,
24 V for 2 to 10 VDC and 4 to 20 mA control signal.
Multiple actuators mounted to shaft
Model Maximum quantity per shaft
GM24 US 2
GM24-SR US 2
Control Signal (+)
2 to 10VDC
(–)
1 Common
2 + Hot
3 Y Input, 2 to 10V
5 U Output 2 to 10V
1
2
24 VAC Transformer
A
BGM24-SR US
Line
Volts
1
1 Common
2 + Hot
3 Y Input, 2 to 10V
5 U Output 2 to 10V
124 VAC Transformer
2
5
4
3A
BGM24-SR US
Control Signal (+)
0 to 20 mA
(–)
Feedback Signal (+)
2 to 10VDC
(–)
Ω
500Ω
To other
actuators
Line
Volts
1
W072
W073