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32
CONTROL
RESOURCES
INCORPORATED
E-mail: sales@controlres.com s Web: www.controlres.com
Maximum Watts to Fans1
Choose 12, 24, or 48 VDC nominal voltage ratings
High power efficiency: typically greater than 90%
Noise reduction: typically 15 dB(A) or more
at idle speed
Constant idle voltage regardless of input voltage
Optically isolated temperature alarm output sinks
up to 1.0 mA (normally closed)
Selectable Control Temperatures of 35°, 40°, or 45°C
(74°, 80°, or 86°C when P3 sensor is used)
Omni SD-DC — Speed control for DC fans
FEATURES
2.00
(50.8)
1.10 MAX
(27.9)
0.20
(5.1)
2.40
(61.0)
2.850
(72.4)
3.250
(82.6)
0.156 D(4)
(3.96)
SmartFanOmniSDisaversatileswitching
DC control which operates at a high-
frequency to achieve maximum power
efficiency at minimum size. Units are available
for nominal 12, 24 and 48 VDC operation.
Omni SD controllers apply a smooth DC voltage
to the air mover for absolute minimum noise.
They are compatible with temperature sensors
P1 through P9 shown on page 34. Control Tem-
perature is set by means of a jumper on the cir-
cuit board. Omni SD is supplied with an optically
isolated temperature alarm, triggered if sensor
temperature reaches 10°C above Control Tem-
perature or if cooling system power is lost.
SPECIFICATIONS
012D440
048D440
10-15 VDC
60 Watts/5.0 Amps
48 Watts/4.0 Amps
240 Watts/5.0 Amps
192Watts/4.0 Amps
42-58 VDC
Supply Voltage
Range
200 ft/Min
Still Air
Part Number
H104
Hardware Pack
1Air Temperature of 55°C or less. See page 13 for derating above 55°C.
U.S. Patents 4,659,290, 4,722,699 and 5,364,026
For additional information see:
page 13 Design Considerations
page 34 Sensors
024D440
120 Watts/5.0 Amps
96 Watts/4.0 Amps
20-30 VDC