Kontron KTA70M-mITX - Manual (Page 40)

KTD-N0861-B Page 33 Pin Connectors
KTA70M/mITX Users Guide
KTA70M/mITX Users Guide
7.10 CPU/System Fan Connectors (J25, J24)
The CPU Fan connector and the System Fan connector are identical 4 pin type connectors. The type is Tyco
1470947-1 or similar.
Header Pin Signal Description Type
1 PWM PWM output O-3.3
2 TACHO Tacho signal (open drain) I
3 12V Power +12V PWR
4 GND Ground PWR
The CPU Fan is premounted on the KTA70M/mITX.
PN 1052-6341 for R-252F and R-460L versions.
PN TBD for R-460H version.
The fan is a 12V Ball Bearing type.
PWM 0 – 100% control making speed in range 0 – 7000 RPM
(Startup PWM is 30%)
Power consumption up to 2,4W
MTBF 70000 Hours @ 40ºC
Signal Description
PWM PWM is output signal used to control the fan speed (only for 4-wire Fans).
Tacho
Tarcho input signal is used to monitor the rotation speed RPM (Rotation Per Minute).
Prepared for two pulses per turn.