2 fan connectors – Kontron CP-ADAP-P47-PB (6U) User Manual

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CPCI Backplane

PD17: CP-ADAP-P47-PB (6U)

RID 24229 PD17, Rev. 01

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4.2

Fan Connectors

The backplane is equipped with four connectors for supplying power for fan(s) and for con-
necting a fan speed control device. JP21/23 (FAN1/2), are 3-contact male connectors which
supply +12V for fan operation as well as the possibility to connect to a speed control device
for regulating air flow within the system sub-rack. JP22/24 (NTC1/2), are 2-contact male con-
nectors which provide a separate connection for a speed control device and are designed to
be used in conjunction with JP21/23.

For fans that have their own speed control or where no control is required, pins 1 and 2 of
JP21/23 can be used. For external speed control of fans, pins 2 and 3 of JP21/23 and pins 1
and 2 of JP22/24 are used. Pin 3 of JP21/23 and pin 2 of JP22/24 are connected internally on
the board side to each other.

External air flow regulation can be accomplished using a negative thermal coefficient (NTC)
device connected to JP22/24

Figure 4:

Orientation and Pinouts of Connectors JP21/23 and JP22/24

JP21/23

JP22/24

Table 4: Pinout of JP21/23 Connectors

Pin

Function

GND

+12V

NTC1

Table 5: Pinout of JP22/24 Connectors

Pin

Function

GND

NTC1