Fan Control Circuit - Veichi AC310 Service Manual

2.6 Fan Control Circuit

1. Circuit configuration:
According to the received DSP drive signal, through the optocoupler output, drive
MOS tube control fan 24V power output.
Compared with the previous fan drive, if the fan of AC310 AC drive is short-circuited,
the software will reboot itself twice, combined with the fail-safe function F10.14, it will
report the fault E.040, and other switching power supply voltages will not be affected.
2. Types of faults
Over-temperature failure, keyboard no display, power hiccups, fan uncontrolled
3. Method of overhaul
Static detection
The CPU outputs the FANOUT signal at a high level (5V) after normal power-on, and
the FANOUT signal is low (0.5V or less) when the fan is running.
⚫ Check the fan for damage and replace the damaged fan.
AC310 Universal AC Drive Service Manual
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