Pioneer KRP-500P - Page 66

66
KRP-500P
1
2 3 4
A
B
C
D
E
F
1
2 3 4
Block diagram
Operation specifications
Notes:
Temperature
SD
[2] SPECIFICATION OF THE FAN CONTROL
• The operating temperature of the fan is higher than the ambient temperature, because the sensor temperature is read by the
microcomputer.
• If the critical values for signals are displayed in the address circuit, the fan may be activated or be rotated at higher speed in response
to values lower than the set temperature values shown above.
• Depending on the ventilation conditions behind the unit, the fan may be activated or be rotated at higher speed in response to values
lower than the set temperature values shown above.
• When the temperature rises, the sensor voltage of TEMP3 increases.
• When the voltage of the DAC output from the Panel Main microcomputer decreases, rotation speed of the fan rises.
• Normally, the T1 temperature sensor output is used to control the fan.
The T2 sensor detects the temperature inside the unit and assists T1.
DIGITAL Assy
SENS Assy
MAIN Assy
FAN CH
Assy
FAN Assy
The external fans cool down the whole unit.
External fans
If an emergency signal
is detected, it will be
transmitted.
TEMP3_2
FAN_NG A
FAN_NG B
FAN_VCC
TEMP3_1
0 to 12V
FAN_ON A
FAN_CONT A
FAN_VCC
0 to 12V
FAN_ON B
FAN_CONT B
OR
FAN__REG
A
TEMP3
T1
Panel Main_Ucom
Module_Ucom
R
OR
TEMP3
T2
R
FAN__REG
B
DAC output
DAC2
DAC1
STOP
0xFF
43 45
FAN A: 50 52
FAN B: 51 53
FAN A: 54 56
FAN B: 55 57
67
ºC
External FAN