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CRI
Catalog and Design Guide Section |
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on drawing to view
large scale version |
| Omni
SD Speed control for DC fans |
|
SmartFan
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.
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Control
Temperature is set by means of a jumper on
the circuit board. Omni SD is supplied with an
optically
isolated temperature alarm, triggered if sensor
temperature reaches 10°C above Control
Temperature or if cooling system power is lost.
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| For
Application and Design Information See: |
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| Sensors |
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| Features |
- 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)
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| Specifications |
| Part
Number
|
Supply
Voltage Range |
Maximum
Watts to Fans1
|
| 200
ft/min |
Still
Air |
| 012D440
|
10-15VDC
|
60
Watts/5.0 Amps |
48
Watts/4.0 Amps |
| 024D440
|
20-30
VDC |
120
Watts/5.0 Amps |
96
Watts/4.0 Amps |
| 048D440
|
42-58
VDC |
240
Watts/5.0 Amps |
192
Watts/4.0 Amps |
| H104
|
Hardware
Pack |
1Air
Temperature of 55°C or less. See Derating Curves
page for derating above 55°C.
U.S. Patents 4,659,920, 4,722,699 and 5,364,026.
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Control Resources Incorporated
11 Beaver Brook Road
Littleton MA, 01460 USA
Tel: 978-486-4160
Fax: 978-486-4772
email: sales@controlres.com
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