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Installing the CPU 41x-2 PCI and the Software
Assigning the Connector
Contact
Inner
Outer
For more information on the backup battery, refer to Removing the Passivation
Layer of the Backup Battery.
2.5
Connecting the Fan
If you connect the CPU 41x-2 PCI to an external 24 VDC supply, you should feed
the fan connection through the CPU 41x-2 PCI to ensure that it is adequately
cooled even in the event the PC power supply fails:
•
If the PC supply voltage is switched on, the fan will operate, regulated by the
PC. The fan rotation is regulated by the PC motherboard according to the
temperature in the PC case (if the PC supports this mode).
•
If the PC supply voltage fails or you switch off the PC, the CPU 41x-2 PCI will
take over the fan operation to prevent overheating. In this case, the fan is
always operated at maximum rotation.
Approved PC Fans
Only UL-/CSA-approved fans within the technical specifications are permitted.
38
Assignment
Battery, positive
Battery, negative (M)
Hardware Installation and Operating Manual, Edition 02/2006, A5E00273194-02
Windows Automation Center, WinAC Slot Version 4.0
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