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2 – General Description
Power Supplies and Fans
2-10 59096-04 A
S
2.5
Power Supplies and Fans
The model 5200/5600 switch has a single power supply that converts 100–240
VAC to DC voltages for the various switch circuits. Four internal fans provide
cooling. The switch monitors internal air temperature, and therefore does not
monitor or report fan operational status. Air flow is front-to-back. To energize the
switch, plug the power cord into the switch AC receptacle and into a 100–240 VAC
power source.
The model 5202/5602 switch has two, hot pluggable power supplies that convert
standard 100–240 VAC to DC voltages for the various switch circuits. Each power
supply has an AC power receptacle and two status LEDs as shown in Figure 2-8:
The Power Supply Status LED (green) illuminates to indicate that the power
supply is receiving AC voltage and producing the proper DC voltages.
The Power Supply Fault LED (amber) illuminates to indicate that a power
supply fault exists and requires attention.
Figure 2-8. Model 5202/5602 Switch Power Supplies
Each power supply is capable of providing all of the switch’s power needs. During
normal operation, each power supply provides half of the demand. If one power
supply goes offline, the second power supply steps up and provides the
difference.
The power supplies are hot swappable and interchangeable. Hot pluggable
means that you can remove and replace one power supply while the switch is in
operation without disrupting service. Refer to Section 6 for information about
replacing the power supplies.
Connecting a power supply to an AC voltage source energizes the switch logic
circuitry. Internal fans provide cooling. Air flow is front-to-back.
Status LED (Green)
Fault LED (Amber)
AC Power
Receptacle
Power Supply 1 Power Supply 2