LightStream 1010 ATM Switch Power Supply Configuration Note

Product Number: L1010-PWR-1=, LS1010-PWR-DC=

This document contains instructions for installing and configuring the LightStream 1010 ATM switch AC and DC power supplies. For complete hardware configuration and maintenance procedures, refer to the LightStream 1010 ATM Switch Hardware Installation Guide publication.

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Sections in this document include the following:

• What is the LightStream 1010 ATM Switch?

• Obtaining Service and Support

• Cisco Connection Online

• Power Supplies

• Power Supply LEDs

• Site Requirements

• Safety Recommendations

• Repacking the System

• Removing and Installing Power Supplies

• Cisco Connection Online

Warning Only trained and qualified personnel should install or replace the LightStream 1010 ATM switch, chassis, power supplies, fan assembly, or modules. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

What is the LightStream 1010 ATM Switch?

The LightStream 1010 uses a five-slot, modular chassis featuring the option of dual, fault-tolerant, load-sharing power supplies. (See Figure 1.) The central slot in the LightStream 1010 is dedicated to a single, field-replaceable ATM switch processor (ASP) module that supports both the 5-Gbps shared memory and the fully nonblocking switch fabric. The ASP also supports the feature card and high performance reduced instruction set (RISC) processor that provides the central intelligence for the device. The remaining slots support up to four hot-swappable Carrier Modules (CMs). Each CM supports up to two hot-swappable Port Adapter Modules (PAMs) for a maximum of eight PAMs per switch, supporting a wide variety of desktop, backbone, and wide-area interfaces.

Figure 2 shows an example of a network configuration using the LightStream 1010 ATM switch in a high-performance workgroup.

Figure 3 shows an example of a network configuration using the LightStream 1010 ATM switch for a campus backbone.

Power Supplies

The LightStream 1010 ATM switch comes equipped with one power supply. This power supply may be either an AC or DC input version. An identical, optional, second power supply is also available for fault-tolerant power. Dual power supplies are automatically load-sharing and redundant, which means that a second power supply can be installed or replaced without interrupting system operation.

Fault-Tolerant Power

When two power supplies are installed and both are turned on, each concurrently provides about half of the required power to the system. If one of the power supplies fails, the second power supply immediately ramps up to full power to maintain uninterrupted system operation. Load-sharing and fault-tolerance are automatically enabled when the second power supply is installed; no software configuration is required.

Each power supply should be connected to a separate AC or DC sources so that, in case of an input power line or power supply failure, the second power supply maintains uninterrupted system power.

Specifications

Table 1 lists the LightStream 1010 ATM switch and power supply specifications:

Power Supply LEDs

Each power supply has one LED. The LED is green when the power supply is powered on and operating within tolerances. The LED is off when the power supply is powered off, the power cord is disconnected, or if the power supply has malfunctioned.

See the following section for a description of the PS0 and PS1 LEDs on the ASP.

ATM Switch Processor Power Supply LEDs

On the ATM switch processor front panel, the PS0 LED goes on when the power supply in the left bay, labeled Power Supply 0, is installed and supplying power to the system. The PS1 LED goes on when the power supply in the right bay, labeled Power Supply 1, is installed and supplying power to the system. Both the LEDs should be on in systems with redundant power. The ATM switch processor LEDs are shown in Figure 4 and described in Table 2.

Power Supply LED

The green LED (see Figure 5) indicates the status of the power supply and internal DC voltages. The LED stays on when the power supply is on and receiving source power, providing +5, +12, and +24 VDC to internal components, and ensuring all internal voltages are within tolerance.

If the source power or any of the internal DC voltages exceed allowable tolerances, the LED goes off and the system environmental monitor messages indicate the out-of-tolerance line. Because the system requires all three output voltages for operation, the system will probably malfunction or shut down if any of the internal DC voltages reach an out-of-tolerance state.

Overvoltage and Overtemperature Protection

The power supply monitors its own temperature and internal voltages. If the supply detects an overvoltage or overtemperature condition, it shuts down to avoid damage to the power supply or other system components.

Installing and removing either AC or DC power supplies is described in the following sections:

• Removing and Installing AC Power Supplies

• Removing and Installing DC Power Supplies

Power Supply Monitoring

The power supplies are self-monitoring. Each power supply monitors its own temperature and internal voltages.

Environmental Monitoring and Reporting Functions

The environmental monitoring and reporting functions enable you to maintain normal system operation by identifying and resolving adverse conditions before the system fails. Environmental monitoring functions constantly monitor the internal chassis air temperature. Each power supply monitors its own voltage and shuts itself down if it detects a critical condition within the power supply. The reporting functions enable you to retrieve and display the present values of measured parameters, and the reporting functions display alarms on the console if any of the monitored parameters exceed defined thresholds.

Environmental Monitoring

The environmental monitoring functions use three levels of status conditions to monitor the system: normal, alarm, and critical. The processor monitors the temperature inside the module compartment, and the power supplies use the normal and critical levels to monitor DC voltages. Table 3 lists temperature thresholds for the processor-monitored levels. Table 4 lists the DC power thresholds for the normal and critical power-supply-monitored levels.

The power supply monitors its own internal temperature and voltages. The power supply is either within tolerance (normal) or out of tolerance (alarm level), as shown in Table 4. If an internal-power-supply temperature or voltage reaches a critical level, the power supply shuts down without any interaction with the processor.

Site Requirements

This section discusses the site environment requirements for the switch chassis.

AC and DC Power

The 376W, AC-input power supply contains an input autoranging circuit that allows it to operate on input voltage and current within the ranges of 100 to 240 VAC and 47 to 63 Hz. It also features a power factor correction (PFC) which keeps input circuits and harmonics low.

The 376W, DC-input power supply operates over the full DC range in both domestic and international applications.

A second, identical power supply is also present in chassis configured with the redundant power option. Redundant power ensures that power to the chassis continues uninterrupted in the event that one power supply fails. It also provides uninterrupted power in the event that one power line fails; the redundant power supply operates only if the power supplies are connected to separate input lines. Table 1, "LightStream 1010 ATM Switch and Power Supply Specifications" lists system power specifications, including input voltage and operating-frequency ranges.

Caution To avoid problems or damage to the switch, do not mix DC input power supplies with AC input power supplies in individual switches.

The following warning applies to AC power supplies:

Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the phase conductors (all current-carrying conductors). To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

The following warning applies to DC power supplies:

Warning Before installing a DC-input power supply, ensure that all power is off to the DC input circuit. Locate the circuit breaker on the panel board that services the DC circuit and switch it to the off position. Tape the circuit breaker switch handle in the off position to prevent accidental closing of the circuit. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Warning Care must be given to connecting units to the supply circuit so that wiring is not overloaded.To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Note the power consumption rating inTable 1, "LightStream 1010 ATM Switch and Power Supply Specifications" for each unit before it is connected.

Caution The power outlet must be installed near the equipment and must be easily accessible. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings."

Warning  This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Safety Recommendations

The following guidelines help ensure your safety and protect the equipment. This list is not inclusive of all potentially hazardous situations that you may be exposed to as you install the module, so be alert.

• Never try to lift the chassis by yourself; two people are required to lift the switch.

• Always turn off all power supplies and unplug all power cords before removing the chassis front panel.

• Always unplug all power cords before installing or removing a chassis.

• Keep the chassis area clear and dust free during and after installation.

• Keep tools and chassis components away from walk areas.

• Do not wear loose clothing, jewelry (including rings and chains), or other items that could get caught in the chassis. Fasten your tie or scarf and sleeves.

Warning Metal objects heat up when connected to power and ground, and can cause serious burns. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Safety with Electricity

The port adapter modules (PAMs), carrier modules (CMs), power supplies, and fan assembly are designed to be removed and replaced while the system is operating without presenting an electrical hazard or damage to the system.

Before removing a redundant power supply, ensure that the first supply is powered on. However, you must shut down the system before removing or replacing any of the replaceable components inside the front panel, for example, the backplane. Never install equipment that appears damaged.

Follow these basic guidelines when working with any electrical equipment:

• Before beginning any procedures requiring access to the chassis interior, locate the emergency power-off switch for the room in which you are working.

• Disconnect all power and external cables before installing or removing a chassis.

• Do not work alone when potentially hazardous conditions exist.

• Never assume that power has been disconnected from a circuit; always check.

• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

• Carefully examine your work area for possible hazards such as moist floors, ungrounded power extension cables, and missing safety grounds.

In addition, use the guidelines that follow when working with any equipment that is disconnected from a power source but still connected to telephone wiring or other network cabling.

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

• Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.

• Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.

• Use caution when installing or modifying telephone lines.

Unpacking the Power Supply

Unpacking instructions are provided in the document Unpacking Instructions, which is attached to the outside of the shipping container. If you have already read the unpacking instructions and followed the procedures to unpack your LightStream 1010 ATM switch, proceed to the next section "Checking the Contents" to verify that you have received all the required components.

Checking the Contents

Perform the following steps to check the contents of your LightStream 1010 ATM switch component package:

Step 1 Check the contents of the box against the packing slip and verify that you received all listed equipment, including the following:

• Switch hardware and software documentation, if ordered

• Optional equipment that you ordered, such as network interface cables, transceivers, or special connectors

Step 2 Proceed to the chapter "Removing and Installing Power Supplies" to begin installation.

Repacking the System

If you need to return the LightStream 1010 ATM switch, follow these instructions to repack the switch using the original packaging material:

Step 1 Place the power supply in the anti-static bag.

Step 2 Place the antistatic bag with the power supply in the container between the padding.

Step 3 Seal the container with shipping tape and return it as described by your customer service representative.

Removing and Installing Power Supplies

The switch is configured to your order and is ready for installation and startup when it leaves the factory. As your communication requirements change, you may want to upgrade your system and add or replace a power supply.

The LightStream 1010 ATM switch supports both AC and DC power inputs by using that appropriate power supply.

Caution To avoid problems or damage to the switch, do not mix DC input power supplies with AC input power supplies in individual switches.

The DC input power supply is required by many telcos because their installations are equipped with battery-backed DC power distribution. From an operational perspective, the DC input power supply has the same characteristics as the AC input version.

The following caution applies to DC input power supplies:

Caution To be installed only in restricted access area (dedicated equipment rooms, equipment closets, or the like) in accordance with articles 110-16, 110-17 and 110-18 of the National Electrical Code, ANSI/NFPA 70.

Before performing any of the following procedures, confirm the power supply is turned off. See the section "Power Supply LEDs" to confirm the power supply is powered off.

This section describes the following:

• Removing and Installing AC Power Supplies

• Removing and Installing DC Power Supplies

Removing and Installing AC Power Supplies

The 376W power supplies (AC-input) that are used in the switch, support redundant hot swapping. When two power supplies are installed, you can install, remove, or replace one of the supplies without affecting system operation. When power is removed from one supply, the redundant power feature causes the second supply to ramp up to full power and maintain uninterrupted system operation. In systems with dual power supplies, connect each power supply to separate input lines so that, in case of a line failure, the second source will most likely still be available and can maintain maximum overcurrent protection for each power connection.

A modular power cord connects each AC power supply to the separate site power sources.

Warning Use both hands to remove and install power supplies. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Warning Keep hands and fingers out of the power supply bays. Voltage is present on the switch backplane when the system is operating. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

The AC power supply installation and removal section is separated into the following sections:

• Tools Required

• Removing AC Power Supplies

• Replacing the AC Power Supply

• Installing the AC Power Supply

• Connecting AC Power

• Connecting Redundant AC Power

Tools Required

You will need a 1/4-inch flat-blade screwdriver to remove and install filler plates and to loosen or tighten the captive installation screws on the AC power-supply.

Removing AC Power Supplies

Always install a filler plate over an empty power supply bay to protect the connectors from contamination.

Take the following steps to remove an AC power supply:

Step 1 Turn OFF the power switch on the power supply you are removing. (See Figure 6.)

Caution Failure to turn off the AC power supply could result in equipment damage.

Step 4 Use a screwdriver to loosen and remove the captive installation screws on the sides of the supply. (See Figure 7.)

Caution Turn the captive installation screw simultaneously to avoid skewing the power supply.

Step 5 Grasp the AC power-supply handle with one hand and place your other hand underneath to support the bottom of the supply, as shown in Figure 8.

Step 6 Pull the supply out of the bay and put it aside.

Replacing the AC Power Supply

Replace the AC power supply by following Step 1 through Step 5 in the section "Removing AC Power Supplies" by reversing your steps, beginning with Step 5.

Installing the AC Power Supply

Take the following steps to install an AC power supply:

To avoid problems or damage to the switch, do not mix DC input power supplies with AC input power supplies in individual switches.

Step 1 Grasp the AC power-supply handle with one hand and place your other hand underneath to support the bottom of the supply, as shown in Figure 8.

Step 2 Place the AC power supply into the power-supply bay and push the AC power supply into the bay until the power supply faceplate is flush with the cover.

Step 3 Tighten each of the two captive installation screws by turning them clockwise.

Keep hands and fingers out of the power supply bays. Voltage is present on the switch backplane when the system is operating. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Connecting AC Power

This section describes the procedures to apply AC power to the LightStream 1010 ATM switch at your site. Connect an AC-input power supply as follows:

Step 1 On one AC power supply, plug in the power cord.

Step 2 Connect the AC power-supply cord to an input line. (See Figure 9.)

Connecting Redundant AC Power

Connect the redundant AC power supply to a separate input line. Connect the redundant AC-input power supply as follows:

Step 1 On the redundant AC power supply, plug in the AC power cord.

Step 2 Connect the redundant AC power supply cord to an input line other than the initial AC power supply line. (See Figure 9.)

Removing and Installing DC Power Supplies

This section provides a removal and replacement procedure for DC power supplies. The LightStream 1010 ATM switch is configured to your order and is ready for installation and startup when it leaves the factory. As your communication requirements change, you might want to upgrade your system and add or replace a power supply.

The LightStream 1010 ATM switch DC input power supplies support redundant hot-swapping. When two power supplies are installed, you can install, remove, or replace one of the supplies without affecting system operation. When power is removed from one supply, the redundant power feature causes the second supply to ramp up to full power and maintain uninterrupted system operation. In systems with dual power supplies, connect each power supply to separate DC input lines; in the event of a line failure, the second source is still available.

The DC input power supply is required by many telcos because their installations are equipped with batty-backed DC power distribution. From an operational perspective, the DC input power supply has the same characteristics as the AC input version.

The following caution applies to DC input power supplies:

Caution To be installed only in restricted access area (dedicated equipment rooms, equipment closets, or the like) in accordance with articles 110-16, 110-17 and 110-18 of the National Electrical Code, ANSI/NFPA 70.

Figure 10 shows the location of the DC power supplies in a redundant configuration. In a nonredundant configuration the power supply goes in the slot labelled Power Supply 0.

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide."

Warning Use both hands to remove and install power supplies. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings."

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Note Each AC power supply weighs 10 pounds (4.54 kilograms).

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Warning Keep hands and fingers out of the power supply bays. Voltage is present on the switch backplane when the system is operating. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Caution Always install a filler plate over an empty power supply bay to protect the connectors from contamination.

The DC power supply installation and removal section is separated into the following sections:

• Tools Required

• Removing DC Power Supplies

• Replacing the DC Power Supply

• Installing the DC Power Supply

• Connecting DC Power

Tools Required

You will need a 1/4-inch flat-blade screwdriver to remove and install filler plates and to loosen or tighten the captive installation screws on the DC power-supply.

Removing DC Power Supplies

Always install a filler plate over an empty power supply bay to protect the connectors from contamination.

Follow these steps to remove a power supply:

Caution To prevent problems with the switch, do not mix DC input power supplies with AC input power supplies in individual switches.

Step 1 Verify that power is off to the DC input circuit supplying power to the power supply being removed.

Step 2 Turn the power switch to the off (0) position on the power supply you are removing.

Step 4 Disconnect the DC input wires from the terminal block (see Figure 11).

Caution Disconnect the ground wire last.

Step 5 Use a screwdriver to loosen and remove the captive screws on the sides of the power supply (see Figure 11).

Caution Turn the captive installation screw simultaneously to avoid skewing the power supply.

Step 6 Grasp the power supply handle with one hand and place your other hand underneath as you pull the power supply out of the bay (see Figure 12).

Step 7 If the power supply bay is to remain empty, install a blank power-supply filler plate over the opening and secure it with the mounting screws. This protects the inner chassis from dust and prevents accidental contact with live voltage at the rear of the bay.

Replacing the DC Power Supply

Replace the DC power supply by following Step 1 through Step 4 in the section "Replacing the DC Power Supply."

Installing the DC Power Supply

Take the following steps to replace a DC power supply:

Caution To avoid problems or damage to the switch, do not mix DC input power supplies with AC input power supplies in individual switches.

Step 1 Grasp the DC power-supply handle with one hand and place your other hand underneath to support the bottom of the supply, as shown in Figure 12.

Step 2 Place the DC power supply into the power-supply bay and push the power supply into the bay until the power supply faceplate is flush with the cover.

Step 3 Tighten each of the two captive installation screws by turning them clockwise.

Caution Turn screws simultaneously to avoid skewing the power supply.

Warning  Keep hands and fingers out of the power supply bays. Voltage is present on the switch backplane when the system is operating. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Step 4 Continue with the following section "Connecting DC Power."

Connecting DC Power

Warning Before performing the procedure, ensure that all power is off to the DC circuit. Locate the circuit breaker on the panel board that services the DC circuit and switch it to the off position. Tape the circuit breaker switch handle in the off position to prevent accidental closing of the circuit. To see translated versions of this warning, refer to the appendix "Translated Safety Warnings" in the LightStream 1010 ATM Switch Hardware Installation Guide.

Follow these steps to connect the DC power supply to the DC voltage source:

Step 1 Verify that power is off to the DC input circuit.

Step 2 Ensure that the power switch is in the off (0) position on the power supply. (See Figure 13.)

Step 3 Remove the terminal block cover by depressing the two plastic levers on each side of the terminal block.

Step 4 Attach the appropriate lugs to the DC input wires.

Caution Connect the ground wire first.

Step 5 From the top of the terminal block, wire the DC input power supply to the terminal block as follows (see Figure 13):

• Ground wire to ground connector

• Return wire to "+" connector

• Battery wire to "-"connector

Step 6 After ensuring that all wire connections are secure, reinstall the terminal block cover.

Step 7 If there is a redundant power supply installed, use Step 1 through Step 6 to connect it to a different DC input line than the initial power supply.

Step 8 The LightStream 1010 ATM switch must be connected to the central office (CO) ground through the CO ground connector shown in Figure 14. Use the following guidelines when connecting the switch to CO ground.

Step 11 Verify that the green LED on the power supply front panel is on. This indicates that the power supply is on and receiving DC source power, providing +5, +12, and +24 VDC to internal components, and ensuring that all internal voltages are within tolerance.

Switch#show environment
Temperature:                        OK
Fan:                                OK
Voltage:                            OK
Power Supply#0 type: Astec,  status:    OK
Switch#

If the LEDs or show environment command indicate a power problem or other system problem, refer to the LightStream 1010 ATM Switch Hardware Installation Guide document and chapter "Confirming the Installation" for troubleshooting information.

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