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參數(shù)資料
| 型號： | 018W135P |
| 英文描述： | WISP FAN SPEED CONTROLLER |
| 中文描述： | WISP的風(fēng)扇調(diào)速器 |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 82K |
| 代理商： | 018W135P |
OPERATION
Fan Speed vs. Sensor Temperature
The relationship between fan speed, as a per-
centage of full speed, and sensed temperature
is shown in Figure 4. Full speed occurs at the
Control Temperature (Tc). Minimum speed tem-
perature (approx. 50% of full speed) depends
on part number. For closed loop units, the “X”
in Figure 4 is equal to 4. For open loop units the
“X” in Figure 4 is equal to 12.
Voltage Regulator and Limiter
Part Nos. 048W0XXX are intended to cover
telecommunications applications using supply
voltages ranging from 38 to 75 VDC. Wisp II
regulates minimum (idle) voltage at 26 VDC.
Maximum voltage applied to the fans is limited
to 50 VDC. For supply voltages above 50 VDC,
power is linearly derated based on the curve
shown in Figure 5.
40
50
60
70
20 W
Power Rating vs. Supply Voltage
10 W
VDC
29
CONTROL
RESOURCES
INCORPORATED
E-mail: sales@controlres.com s Web: www.controlres.com
Wisp II — Installation & Operation
INSTALLATION
Mounting
Mount Wisp II in a moving air stream using the
cable clamp supplied. Avoid placing the sensor
(located at the tip) near a hot component as this
may result in heating by radiation. To minimize
heating of the sensor by the Wisp II circuits,
avoid mounting the unit vertically with the
sensor at the top.
Location
Install a closed-loop unit at or near the equip-
ment exhaust where it can sense any upstream
event that could affect cabinet temperature.
Install an open-loop (P suffix) unit at or near
the equipment inlet.
Temperature Alarm Output
For Part Nos. 018W1XXX, a temperature alarm
signal is available through the yellow and black
wires. An alarm can be indicated using an
external LED (Figure 1) or logic circuit (Figure 2).
Alarm Type:
Non-Isolated Open-Collector
Trigger:
10°C Above Control Temperature
Alarm States:
Conducting (Closed), Above Trigger
Cut-Off (Open), Below Trigger
Max. Voltage:
30 VDC
Max. Current
4 mA DC at 0.4 VDC (Logic Circuit),
10 mA DC (LED Circuit)
T C
C
T
50%
100%
Fan Speed vs. Sensor Temperature
- XC
Resistor (R1) = (Vs -2)/ 10, kOhms
BLACK
WHITE
YELLOW
RED
LED
R1
Vs
Supply
Voltage
+
-
BLACK
YELLOW
WHITE
RED
Vs
Supply
Votlage
V1
Logic
Voltage
R2
VA
R2 >= V1 / 4, kOhms
+
-
Above Trigger: Va <= 0.4VDC
Below Trigger: Va = V1
Vs
Supply
Voltage
RED
BLACK
WHITE
+
-
Figure 4
Fan speed vs
sensor temperature
Figure 5
Power derating curve
Figure 1
Connection diagram for P/N 018W0XX with
LED temperature alarm indication.
Figure 2
Connection diagram for P/N 018W0XX with
logic circuit temperature alarm indication.
Figure 3
Connection diagram for P/N 048W0XX and P/N 018W1XX when
the temperature alarm output is not used.
Connections
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