Installation guide

3-1
Chapter 3
9C214-2 Power Supply Operation
The 9C214-2 Power Supply can operate with input voltages ranging from
36 – 72 positive or negative Volts Direct Current (VDC). Each 9C214-2 provides a
maximum of 1000 watts of power to the SmartSwitch 9000.
When two or more power supplies are installed, the system uses a current sharing
scheme where under all load conditions each supply provides power equally.
Each 9C214-2 Power Supply converts the 36 – 72 VDC to three different DC
outputs for use by the power buses within the SmartSwitch 9000. Each of these
outputs is described below.
• 57 volts are supplied to the 48 volt DC System Power Bus for use throughout
the chassis for each installed module and the Environmental Module system
fans.
• 5 volts are supplied to the Diagnostic Power Bus used by the diagnostic
controllers and the Environmental Module.
• 3.3 volts are supplied to the INB Termination Power Bus.
Operating Functions
The 9C214-2 Power Supply includes the following functions:
• System Diagnostic Controller
• Temperature Sensor
• Power Supply Cooling
• LANVIEW LEDs
• Load Sharing