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PAC-4010 User Manual V1.0 Copyright 2016 Advantech Co. Ltd. All rights reserved. Page
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2.9 Cooling and Thermal Management
2.9.1 Fan Control Board
The cooling system of PAC-4010 includes two key parts – Fan control board (2 units
per system) and Fan module (6 units per system). ShMC receives thermal information
from all sensors of PAC-4010, and communicates with the control IC on the fan control
board through I2C Bus, then the IC will send corresponding PWM signal to add/reduce
fan speed.
Figure 2-13: FAN Control Board Block Diagram
The hardware monitor IC is used to be the fan controller of the system, each controls
three fan modules – includes fan speed and LED behavior. Besides, watchdog
mechanism is supported by this hardware monitor IC. If ShMC fails to access the fan
controller periodically, watchdog function will be triggered and do power-on reset the
fan controller = restore default fan level = 60%
Summary of Contents for PAC-4010
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