Kontron CP3-BP8-P47-RIO - Manual (Page 8)

PD06: CP3-BP8-P47-RIO CPCI Backplane
Page 8 © 2002 PEP Modular Computers GmbH RID 24229 PD06, Rev. 01
5.2 Fan Connectors
The backplane is equipped with two connectors for supplying power for fan(s) and for con-
necting a fan speed control device. JP21 (FAN1), a 3-contact, male connector, supplies +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 (NTC1), a 2-contact male connector, provides a sep-
arate connection for a speed control device and is designed to be used in conjunction with
JP21.
For fans that have their own speed control or where no control is required, pins 1 and 2 of
JP21 can be used. For external speed control of fans, pins 2 and 3 of JP21 and pins 1 and 2
of JP22 are used. Pin 3 of JP21 and pin 2 of JP22 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
Figure 4: Orientation and Pinouts of CP3-BP8-P47-RIO Connectors JP21 and JP22
JP21
JP22
1
2
3
1
2
Table 4: Pinout of CP3-BP8-P47-RIO
JP21 Connector
Pin Function
1 GND
2 +12V
3 NTC1
Table 5: Pinout of CP3-BP8-P47-RIO
JP22 Connector
Pin Function
1 GND
2 NTC1