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3.3.17 FAN Connector
Depending on the usage model of systems based on CQ7-D03 carrier board, for critical applications/environments it is available a 4-pin dedicated connector for an
external +12V
FAN.
DC
FAN Connector - CN23
Pin
Signal
1
GND
2
FAN_POWER
3
FAN_TACHO_IN
4
FAN_PWM_OUT
FAN_POWER: power rail for FAN, voltage is selected by configuration of jumper JP7; when a 3 wires FAN this is connected this output is managed by PWM signal
FAN_PWM_OUT
JP7 position
FAN Voltage
1-2
+12V_ALW
2-3
+5V_RUN
JP8 position
FAN connector
1-2
3 wires FAN
2-3
4 wires FAN
CQ7-D03
CQ7-D03 - Rev. First Edition: 1.1 - Last Edition: 1.0 - Author: S.O. - Reviewed by M.B. Copyright © 2022 SECO S.p.A.
FAN Connector is a 4-pin single line connector, type MOLEX 47053-3000 or equivalent, with pinout shown
in the table on the left.
Mating connector: MOLEX 22-01-2035 receptacle with MOLEX 4754 and 2759 crimp terminals.
Please be aware that the use of an external fan depends strongly on customer's application/installation.
Please refer to chapter 4.1 for considerations about thermal dissipation.
FAN_TACHO_IN: tachometric input from the fan to the Qseven
FAN_PWM_OUT: PWM signal for direct control of a 4 wires connected FAN, this signal is coming from Qseven
The voltage of the power supplied to the connected FAN can be set to +12V_ALW or +5V_RUN
by using dedicated jumper JP7, which is a standard pin header, P2.54mm, 1x3 pin.
Configurations are shown on the table to the left.
The wires number of the connected FAN can be selected by using a dedicated jumper JP8,
which is a standard pin header, P2.54mm, 1x3 pin.
Configurations are shown on the table to the left.
®
module.
®
connector.
45
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