Omni SD-DC — Speed control for DC fans
S
2.40
(61.0)
2.00
(50.8)
0.20
(5.1)
1.10 MAX
(27.9)
martFan Omni SD
is a versatile switching
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.
For additional information see:
page 13 Design Considerations
page 34 Sensors
FEATURES
2.850
(72.4)
3.250
(82.6)
•
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)
0.156 D(4)
(3.96)
SPECIFICATIONS
Part Number
Supply Voltage
Range
10-15 VDC
Maximum Watts to Fans
1
200 ft/Min
60 Watts/5.0 Amps
Still Air
48 Watts/4.0 Amps
012D440
024D440
048D440
H104
1
20-30 VDC
42-58 VDC
Hardware Pack
120 Watts/5.0 Amps
240 Watts/5.0 Amps
96 Watts/4.0 Amps
192Watts/4.0 Amps
Air 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
CONTROL
RESOURCES
32
INCORPORATED
E-mail: sales@controlres.com
s
Web: www.controlres.com
ETC [ ETC ]
