Omni L1A-DC 鈥?Speed control for DC fans
S
1.69
(42.9)
1.31
(33.4)
0.19
(4.8)
0.88
(22.4)
martFan Omni L1A
is a medium power DC
control designed to be used with 12 or 24
VDC fans with power ratings up to 38
Watts. It operates in a linear mode applying a
smooth DC voltage to the fans for minimum
noise. Omni L1A is available for both Closed-
Loop (temperature regulating) and Open-Loop
(temperature compensating) applications. It
includes a temperature alarm, triggered if the
sensor temperature reaches 10擄C above the
Control Temperature. Omni L1A is compatible
with sensors P1 through P9 shown on page 34.
For additional information see:
page 13 Design Considerations
page 34 Sensors
FEATURES
2.38
(60.4)
2.75
(69.9)
鈥?/div>
Wide supply voltage range (11.5 to 30 VDC)
鈥?/div>
Noise reduction 15 dB(A) or more at idle speed
鈥?/div>
Supplied with temperature alarm from transistor
open collector. Will sink at least 20 mA above alarm
trigger temperature
0.156 D(4)
(3.96)
鈥?/div>
70擄C maximum operating temperature
SPECIFICATIONS
Supply
Voltage
Range
11.5-30 VDC
11.5-30
Maximum Watts
to Fans
3
200 ft/Min
Still Air
38 Watts
38
20 Watts
20
Control Temperature
Air
P3 Surface
Sensor
Sensor
35擄C
74擄C
40
80
N/A
N/A
Full Speed/
Idle Speed
Temperatures
NA
35擄C/23擄C
Part No.
018L135A
018L140A
018L135PA
H104
1
Type
Closed-Loop
1
Open-Loop
2
Hardware Pack
For sensor installed near equipment exhaust.
For sensor installed at equipment air inlet.
3
Air Temperature of 70擄C or less. See page 13 for derating above 70擄C.
U.S. Patents 4,659,290, 4,722,699 and 5,364,026
2
CONTROL
RESOURCES
30
INCORPORATED
E-mail: sales@controlres.com
s
Web: www.controlres.com
1
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