Juniper EX9214 Hardware Manual
Download Hardware manual of Juniper EX9214 Network Router, Switch for Free or View it Online on All-Guides.com.
Brand: Juniper
Category: Network Router , Switch
Type: Hardware manual for Juniper EX9214
Pages: 372
CHAPTER 4
Power Supplies
•
AC Power Supply in an EX9214 Switch on page 45
•
AC Power Supply LEDs in an EX9214 Switch on page 47
•
DC Power Supply in an EX9214 Switch on page 49
•
DC Power Supply LEDs in an EX9214 Switch on page 51
AC Power Supply in an EX9214 Switch
An EX9214 switch is configurable with two or four AC power supplies. The power supplies
connect to the midplane, which distributes the different output voltages produced by
the power supplies to the switch components, depending on their voltage requirements.
Each power supply is cooled by its own internal cooling system.
CAUTION: EX9214 switches use either AC or DC power supplies. Do not mix
AC and DC power supplies in a switch.The firsttype of powersupplydetected
by the switch when it is initially powered on determines the type of power
supply the switch will operate with. All installed power supplies of the other
type are disabled by the switch. If you install a power supply of the other type
while the switch is operating with one type of power supply, the switch
disables the power supply you installed and generates an alarm.
This topic describes the AC power supplies in EX9214 switches.
•
AC Power Supply Description on page 45
•
AC Power Supply Configurations on page 47
AC Power Supply Description
The AC power supplies in EX9214 switches are hot-insertable and hot-removable
field-replaceable units (FRUs).
You can install either two or four AC power supplies in an EX9214 switch. Power supplies
are installed at the rear of the chassis in slots PEM0 through PEM3 (left to right). Four
power supplies provide full redundancy.
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