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MX204 AC Power System

 

MX204 Power System Description

The MX204 is powered using either AC or DC power. It supports two power supply modules (PSMs) located at the rear of the chassis in slots 0 and 1. Figure 1 and Figure 2 show the MX204 PSMs. The AC or DC power supply modules directly plug on to main board and are placed on the right side of the rear chassis. Each power supply has a handle, an ejector lever, and status LEDs. The power supply modules connect to the PSM board, which distributes the different output voltages produced by the power supply modules to the router components, depending on their voltage requirements. When both the power supply modules are present, they share power almost equally within a fully populated system. If the first power supply in a redundant configuration fails or is removed, the second power supply assumes the entire electrical load without interruption. A single power supply provides the maximum configuration with full power for as long as the router is operational. A second power supply can be installed for redundancy. The chassis is designed to support 1+1 feed redundancy.

Redundant power supply is hot-removable and hot-insertable. If you remove a power supply from a router that uses only one power supply, then the router shuts down.

Caution

Do not mix AC and DC power supply modules in the same chassis.

Note

Routers configured with only one power supply are shipped with a blank panel installed over the power supply slot that is not populated.

The power supply modules are cooled by its own internal cooling system. A fan present in the power supply module monitors and maintains the temperature inside.

AC Power Supply Description

Each AC power supply weighs approximately 2.2 lb (1 kg) and consists of a handle, an ejector lever, an AC appliance inlet, a fan, and status LEDs to monitor the status of the power supply. Figure 1 shows the AC power supply.

Each inlet requires a dedicated AC power feed and a dedicated customer-site circuit breaker. We recommend that you use a minimum 20 A (110 VAC) or 16 A (220 VAC) customer-site circuit breaker, or as required by local code.

Warning

The router is pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal (sized for 10–32 screws) provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earthing terminal must be permanently connected to earth.

Figure 1: AC Power Supply
AC Power Supply

DC Power Supply Description

Each DC power supply weighs approximately 2.2 lb (1 kg) and consists of a handle, an ejection lever, status LEDs, and a terminal block that provides a single DC input (–48 VDC and return) that requires a dedicated customer site circuit breaker. We recommend that you use a dedicated customer-site circuit breaker rated for 25 A (–48 VDC) minimum, or as required by local code.

Figure 2 shows the DC power supply.

Figure 2: DC Power Supply
DC Power Supply

MX204 Power Supply Module LEDs

AC Power Supply Module LEDs

Figure 3 shows the AC power supply module components along with the status LEDs.

Figure 3: AC Power Supply Module LEDs and Components
AC Power Supply Module
LEDs and Components
  1
Input status LED
  4
Ejector lever
  2
Output status LED
  5
AC power cord retainer port
  3
Fault LED
 

Figure 4 shows the AC power supply module components with the AC power cord retainer along with the status LEDs.

Figure 4: AC Power Supply Module LEDs and Components––with the AC Power Cord Retainer
AC
Power Supply Module LEDs and Components––with the AC Power
Cord Retainer
  1
Input status LED
  4
AC power cord retainer installed
  2
Output status LED
  5
Ejector lever
  3
Fault LED
 

Table 1 describes the LEDs on the AC power supply modules.

Table 1: AC Power Supply Module LEDs

Label

Color

State

Description

AC OK

Unlit

Off

The power supply is disconnected from power source, or the power supply is not receiving power.

Green

On steadily

Power supply is receiving power.

DC OK

Unlit

Off

Power supply output is off.

Green

On steadily

The power supply is sending out power correctly.

! (Fault)

Amber

On steadily

An error has been detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

Note

If the AC OK LED and the DC OK LED are unlit, either the AC power cord is not installed properly or the power supply fuse has failed. If the AC OK LED is lit and the DC OK LED is unlit, the AC power supply is installed properly, but the power supply has an internal failure.

DC Power Supply Module LEDs

Figure 5 shows the DC power supply modules status LEDs.

Figure 5: DC Power Suppy Module LEDs
DC Power Suppy Module
LEDs
  1
Input LED
  3
Fault LED
  2
Output LED
 
Caution

On the DC power supply, the V+ terminals are shunted internally together, as are the V– terminals. The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.

Table 2 describes the LEDs on the DC power supply modules.

Table 2: DC Power Supply Module LEDs

Label

Color

State

Description

IN (Input)

Unlit

Off

The power supply is disconnected from power source, or the power supply is not receiving power.

Green

On steadily

Power supply is receiving power.

OUT (Output)

Unlit

Off

Power supply output is off.

Green

On steadily

The power supply is sending out power correctly.

! (Fault)

Amber

On steadily

An error has been detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

MX204 Router AC Power Specifications

Table 3 lists the AC power system electrical specifications.

Table 3: AC Power System Electrical Specifications

Item

Specification

AC input voltage

Operating range: 100 through 240 VAC

AC input line frequency

50 through 60 Hz (nominal)

AC system current rating

3.2 A @ 100 VAC

1.37 A @ 240 VAC

AC system input power

312 W

Table 4 lists the AC power supply electrical specifications.

Table 4: AC Power Supply Electrical Specifications

Item

Specification

Maximum output power

650 W

AC input voltage

Operating range:

100 through 127 VAC

200 through 240 VAC

AC input line frequency

50 to 60 Hz (nominal)

AC input current rating

7.8 A @ 100 VAC

3.8 A @ 240 VAC

AC Power Circuit Breaker Requirements for the MX204 Router

We recommend that you use a dedicated customer-site circuit breaker rated for 20 A (110 VAC) minimum or 16 A (220 VAC) minimum for each AC power feed, or as required by local code. Doing so enables you to operate the router in any configuration without upgrading the power infrastructure.

AC Power Cord Specifications for MX204 Routers

A detachable AC power cord is supplied with the AC power supply modules. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug at the male end of the power cord fits into the power source outlet that is standard for your geographical location.

Caution

The AC power cord provided with each power supply is intended for use with that power supply only and not for any other use.

Note

In North America, AC power cords must not exceed 4.5 meters (approximately 14.75 feet) in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52 and Canadian Electrical Code (CEC) Section 4-010(3). The cords supplied with the switch are in compliance.

Table 5 gives the AC power cord specifications for the countries and regions listed in the table.

Table 5: AC Power Cord Specifications

Country/Region

Electrical Specifications

Plug Standards

Juniper Model Number

Argentina

250 VAC, 10 A, 50 Hz

IRAM 2073 Type RA/3

CBL-EX-PWR-C13-AR

Australia

250 VAC, 10 A, 50 Hz

AS/NZZS 3112 Type SAA/3

CBL-EX-PWR-C13-AU

Brazil

250 VAC, 10 A, 50 Hz

NBR 14136 Type BR/3

CBL-EX-PWR-C13-BR

China

250 VAC, 10 A, 50 Hz

GB 1002-1996 Type PRC/3

CBL-EX-PWR-C13-CH

Europe (except Italy, Switzerland, and United Kingdom)

250 VAC, 10 A, 50 Hz

CEE (7) VII Type VIIG

CBL-EX-PWR-C13-EU

India

250 VAC, 10 A, 50 Hz

IS 1293 Type IND/3

CBL-EX-PWR-C13-IN

Israel

250 VAC, 10 A, 50 Hz

SI 32/1971 Type IL/3G

CBL-EX-PWR-C13-IL

Italy

250 VAC, 10 A, 50 Hz

CEI 23-16 Type I/3G

CBL-EX-PWR-C13-IT

Japan

125 VAC, 12 A, 50 Hz or 60 Hz

SS-00259 Type VCTF

CBL-EX-PWR-C13-JP

Korea

250 VAC, 10 A, 50 Hz or 60 Hz

CEE (7) VII Type VIIGK

CBL-EX-PWR-C13-KR

North America

125 VAC, 13 A, 60 Hz

NEMA 5-15 Type N5-15

CBL-EX-PWR-C13-US

South Africa

250 VAC, 10 A, 50 Hz

SABS 164/1:1992 Type ZA/13

CBL-EX-PWR-C13-SA

Switzerland

250 VAC, 10 A, 50 Hz

SEV 6534-2 Type 12G

CBL-EX-PWR-C13-SZ

Taiwan

125 VAC, 11 A and 15 A, 50 Hz

NEMA 5-15P Type N5-15P

CBL-EX-PWR-C13-TW

United Kingdom

250 VAC, 10 A, 50 Hz

BS 1363/A Type BS89/13

CBL-EX-PWR-C13-UK

Figure 6 illustrates the plug on the power cord for some of the countries or regions listed in Table 5.

Figure 6: AC Plug Types
AC Plug Types