PDP-5000EX
168
1234
1234
C
D
F
A
B
E
10.4 SPECIFICATIONS ON TEMPERATURE SENSOR DETECTION AND DRIV-
ING OF THE FAN
60
59
58
57
56
55
54
12
53
52
51
10
50
49
48
8
47
46
45
6
44
43
42
4
41
40
39
2
38
TEMP2 temperature
FAN voltage
37
36
0
35
34
33
32
31
30
STOP LOW STOP LOW MIDDLE HIGH
FAN_STATUS
REG
Vref=2.64V
H: on/L :off
MAIN UCOM
76P
TEMP2 (AD value)
149P
PWM
5kHz
17P
FAN_VCC
MM1522XU
Specifications on temperature sensor detection and driving of the fan
• The power must be turned on or off with hysteresis.
• The measured value of the sensor inside the panel is indicated.
According to where and how the unit is installed, there may be a difference between the measured sensor temperature
and the ambient temperature.
FAN voltage (V)
Integrator
[System block diagram]
[Conversion formulae]
TEMP2 (Celsius: C) = 0.32258 x A/D value (10 bit_data) - 52
TEMP2 (Fahrenheit: F) = 1.8 x TEMP2 (Celsius: C) + 32
[FAN_CONT operation]
OFF to ON: If the A/D value of the detected temperature is more than 275, the fan is turned on.
ON to OFF: If the A/D value of the detected temperature is less than 261, the fan is turned off.
[FAN_STATUS operation]
STOP: The fan is not activated if the A/D value of the detected temperature is less than 276.
The fan stops rotating if the A/D value of the detected temperature falls to below 261.
LOW: The fan starts rotating at a low speed if the A/D value of the detected temperature becomes 276 or more but 309 or less.
The rotation speed becomes low if the A/D value of the detected temperature falls to 261 or more but 309 or less.
MIDDLE: The fan starts rotating at a medium speed if the A/D value of the detected temperature becomes 310 or more but 319 or less.
HIGH: The fan starts rotating at a high speed if the A/D value of the detected temperature becomes 320 or more but 344 or less.
[Reading of the sensor and driving of the fan]
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