Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

MX240 AC Power System

 

MX240 Power System Description

The MX240 router uses either AC or DC power supplies. Each AC power supply provides power to all components in the router. When two power supplies are present, they share power almost equally within a fully populated system. If one power supply fails or is removed, the remaining power supply assumes the entire electrical load without interruption. One power supply can provide the maximum configuration with full power for as long as the router is operational.

Caution

The router cannot be powered from AC and DC power supplies simultaneously.

The MX240 router is configurable with two, three, or four AC power supplies or one or two DC power supplies. The power supplies connect to the midplane, which distributes the different output voltages produced by the power supplies to the router components, depending on their voltage requirements. Each power supply is cooled by its own internal cooling system.

Redundant power supplies are hot-removable and hot-insertable. When you remove a power supply from a router that uses a nonredundant power supply configuration, the router might shut down depending on your configuration.

Note

Routers configured with DC power supplies are shipped with a blank panel installed over the power distribution modules. Routers configured with AC power supplies have no blank panel.

MX240 AC Power Supply Description

Each AC power supply weighs approximately 5.0 lb (2.3 kg) and consists of one AC appliance inlet, one AC input switch, a fan, and LEDs to monitor the status of the power supply. Figure 1 shows the power supply. For existing power supplies, each inlet requires a dedicated AC power feed and a dedicated 15 A (250 VAC) circuit breaker.

Figure 1: AC Power Supply
AC Power Supply

For high-capacity power supplies, each inlet requires a dedicated AC power feed and a dedicated 16.0 A @ 100 VAC or 11.0 A @ 200 VAC circuit breaker, or as required by local code.

The maximum inrush current for a high-capacity AC power supply is 49A at 264VAC. Figure 2shows the high-capacity power supply.

Figure 2: High-Capacity AC Power Supply
High-Capacity AC Power Supply
Warning

The router is pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal (sized for UNC 1/4-20 ground lugs) 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.

AC Power Supply Configurations

The MX240 high-capacity and normal-capacity power supplies each support either of the following AC power configurations:

  • In the low-line (110 V) AC power configuration, the MX240 router contains either two AC power supplies (nonredundant), located horizontally at the rear of the chassis in slots PEM0 and PEM1 (left to right); or four AC power supplies (redundant), located in slots PEM0 through PEM3 (left to right). The low-line configuration requires two power supplies, and the third and fourth power supplies provide redundancy. Each AC power supply provides power to all components in the router. When two power supplies are present, they share power almost equally within a fully populated system. If one power supply in a redundant configuration fails or is removed, the remaining power supplies assume the entire electrical load without interruption. Two power supplies provide the maximum configuration with full power for as long as the router is operational.

  • In the high-line (220 V) AC power configuration, the MX240 router contains one or two AC power supplies, located horizontally at the rear of the chassis in slots PEM0 and PEM2 (left to right). The high-line configuration requires one power supply, with the second power supply providing redundancy. Each AC power supply provides power to all components in the router. When two power supplies are present, they share power almost equally within a fully populated system. If one power supply fails or is removed, the remaining power supply assumes the entire electrical load without interruption. One power supply can provide the maximum configuration with full power for as long as the router is operational.

MX240 AC Power Supply LEDs

Each AC power supply faceplate contains three LEDs that indicate the status of the power supply (see Table 1). The power supply status is also reflected in two LEDs on the craft interface (see MX240 Component LEDs on the Craft Interface).In addition, a power supply failure triggers the red alarm LED on the craft interface.

Table 1: AC Power Supply LEDs

Label

Color

State

Description

AC OK

Yellow

Off

AC power input voltage is below 78 VAC.

Green

On

AC power input voltage is within 78–264 VAC.

DC OK

Green

Off

DC power outputs generated by the power supply are not within the normal operating ranges.

On

DC power outputs generated by the power supply are within the normal operating ranges.

PS FAIL

Red

Off

Power supply is functioning normally.

On

Power supply is not functioning normally and its output voltage is out of regulation limits. Check AC OK and DC OK LEDs for more information.

AC Power Supply Electrical Specifications for the MX240 Router

Table 2 lists the AC power supply electrical specifications; Table 3 lists the AC power system specifications.

Table 2: AC Power Supply Electrical Specifications

Item

Specification

Normal-Capacity Power Supplies

Maximum output power

1027 W (low line)

1590 W (high line)

AC input voltage

Operating range: 100–240 VAC (nominal)

AC input line frequency

50 to 60 Hz (nominal)

AC input current rating

11.0 A @ 200 VAC or 14.5 A @ 110 VAC maximum

Efficiency

Note: This value is at full load and nominal voltage.

85% (low line and high line)

High-Capacity Power Supplies

Maximum output power

1167 W (low line)

2050 W (high line)

AC input voltage

Operating range: 100–240 VAC (nominal)

AC input line frequency

50 to 60 Hz (nominal)

AC input current rating

16 A @ 110 VAC maximum

15.1 A @ 200 VAC maximum

Efficiency

Note: This value is at full load and nominal voltage.

84% (low line)

89% (high line)

Table 3: AC Power System Specifications

Item

Normal-Capacity–Low Line

Normal-Capacity–High Line

High-Capacity–Low Line

High-Capacity–High Line

Redundancy

2+2

1+1

2+2

1+1

Output power (maximum) per power supply

1027 W

1590 W

1167 W

2050 W

Output power (maximum) per system

2054 W

1590 W

2334 W

2050 W

AC Power Circuit Breaker Requirements for the MX240 Router

We recommend that you use a dedicated customer site circuit breaker rated for 15 A (250 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 the MX240 Router

Each AC power supply has a single AC appliance inlet located on the power supply that requires a dedicated AC power feed. Most sites distribute power through a main conduit that leads to frame-mounted power distribution panels, one of which can be located at the top of the rack that houses the router. An AC power cord connects each power supply to the power distribution panel.

You can order detachable AC power cords, each approximately 8 ft (2.5 m) long that supply AC power to the router. The C19 appliance coupler at the female end of the cord inserts into the AC appliance inlet coupler, type C20 (right angle) as described by International Electrotechnical Commission (IEC) standard 60320. The plug at the male end of the power cord fits into the power source receptacle that is standard for your geographical location.

Table 4 provides specifications and Figure 3 depicts the plug on the AC power cord provided for each country or region.

Table 4: AC Power Cord Specifications

Country

Model Number

Electrical Specification

Plug Type

Australia

CBL-M-PWR-RA-AU

240 VAC, 50 Hz AC

SAA/3/15

China

CBL-M-PWR-RA-CH

220 VAC, 50 Hz AC

CH2-16P

Europe (except Denmark, Italy, Switzerland, and United Kingdom)

CBL-M-PWR-RA-EU

220 or 230 VAC, 50 Hz AC

CEE 7/7

Italy

CBL-M-PWR-RA-IT

230 VAC, 50 Hz AC

CEI 23-16/VII

Japan

CBL-PWR-RA-JP15

125 VAC, 50 or 60 Hz AC

JIS 8303

CBL-M-PWR-RA-JP

220 VAC, 50 or 60 Hz AC

NEMA L6-20P

North America

CBL-PWR-RA-US15

125 VAC, 60 Hz AC

NEMA 5-15P

CBL-PWR-RA-TWLK-US15

125 VAC, 60 Hz AC

NEMA L5-15P

CBL-M-PWR-RA-US

250 VAC, 60 Hz AC

NEMA 6-20

CBL-M-PWR-RA-TWLK-US

250 VAC, 60 Hz AC

NEMA L6-20P

United Kingdom

CBL-M-PWR-RA-UK

240 VAC, 50 Hz AC

BS89/13

Figure 3: AC Plug Types
AC Plug Types
Warning

The AC power cord for the router is intended for use with the router only and not for any other use.

Warning

Translation from Japanese: The attached power cable is only for this product. Do not use the cable for another product.

Note

In North America, AC power cords must not exceed 4.5 m (approximately 14.75 ft) 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). You can order AC power cords that are in compliance.

Warning

The router is pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal (sized for UNC 1/4-20 ground lugs) 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.

Caution

Power cords and cables must not block access to device components or drape where people could trip on them.

Errata with the MX240 Router Documentation

This topic lists the outstanding issues with the documentation:

  • In the low-line (110 V) AC power configuration (nonredundant), two AC power supplies should be located horizontally at the rear of the chassis in slots PEM0 and PEM1 (left to right).