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Power Supply and Cooling System

The vEdge 5000 router ships with two AC power supplies installed. Read this article to learn more about the AC power supply in the router as well as about the cooling system and airflow through the router chassis.

AC Power Supply in vEdge 5000 Router

The vEdge 5000 router ships with two AC power supplies installed. The second power supply is for redundancy and load-balancing. If one of the AC power supplies fails due to device failure or input power line failure, a single unit is sufficient to power the entire router.

The AC power supply in a vEdge 5000 router is a hot-insertable and hot-removable field replacement unit (FRU). You can remove and replace the power supply in the rear of the chassis without powering off the router or disrupting normal functioning.

Table 1 describes the AC power supply specifications for the vEdge 5000 router.

Table 1: vEdge 5000 Router AC Power Supply Specifications

Item

Specification

AC input voltage

110/230 Vrms

AC input line frequency

60/50 Hz

Maximum output power

300 Watts

Maximum power consumption

285 Watts

AC Power Supply LEDs

The vEdge 5000 AC power supply has an LED faceplate that displays information about the status of the power supply. Table 2 describes the LEDs on an AC power supply in a vEdge 5000 router.

Table 2: Power Supply LEDs on a vEdge 5000 Router

LED State

Description

OFF

No AC power to all or any Power Supply Unit (PSU) in the system

0.5Hz Flashing Red

No AC power to this PSU only

1Hz Flashing Green

AC present but only standby output on

Green Power supply DC output ON and OK

Red

Power supply has failed

0.5Hz Flashing Red*/Green*

Power supply warning

*Flashing frequency: 1Hz (0.5 seconds Red/0.5 seconds Green)

AC Power Cord Specifications

The vEdge 5000 router ships with a detachable AC power cord. The power cord has a C13 connector at one end and the other end is specific to the country/locality to which the product is shipped.

Cooling System and Airflow in a vEdge 5000 Router

The cooling system in a vEdge 5000 router consists of four individual fan trays, each comprising a double-stacked fan module (see Figure 1). The fan trays cool the router itself, except the power supply units, which have their own fans for cooling.

The fan tray is a hot-insertable and hot-removable field-replaceable unit (FRU). The fan trays  provide front-to-back cooling, as shown in Figure 2. If one of the fans in a fan tray fails, you can remove the specific fan tray and replace it with a spare fan tray module without powering off the router or disrupting normal functions.  Also, if one of the fans fails, the rest of the working fans will keep the system running indefinitely.

Figure 1: Fan Tray in a vEdge 5000 Router

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The fan tray installs horizontally in the rear of the chassis. It has two thumbscrews that serve as handles and also as a mechanism to secure the fan tray to the main chassis.

The air intake to cool the chassis flows through the perforations in the front of the chassis. Hot air exits from the rear of the chassis via the vents provided near the fans. See Figure 2.

Figure 2: vEdge 5000 Router Airflow

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Temperature sensors in the chassis monitor the internal chassis temperature. When a single fan/fan tray fails at room temperature, the system can still provide sufficient cooling.

If a fan/fan tray fails or if the ambient temperature inside the chassis rises above the acceptable range, the router raises an alarm. If the temperature inside the chassis rises above the maximum threshold temperature, the router shuts down automatically.

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