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This chapter describes each type of power supply, and includes the following sections:
The following power supply specifications to help you plan where to install the Cisco Optical Regenerator. Be sure to plan for close proximity of other devices for easy cabling configuration.
The AC power supply is used most often when the Cisco Optical Regenerator is installed at a remote site that will not require configuration changes or maintenance. The installed AC power supply is located on the far right of the regenerator chassis. The AC power supply automatically detects and adjusts for input voltage levels to either 110/120 or 220/240. Figure 3-1 shows the regenerator with an AC-power supply.
 | Caution Check the power at your site to ensure that you are receiving clean power (free of spikes and noise). Install a power conditioner, if necessary, to ensure proper voltages and power levels in the source voltage for the system. |
Table 3-1 lists the AC-input power supply specifications.
| Description | Design Specification |
|---|---|
Power (input) | 125 watts RMS |
Source voltage range | 90 to 264 VAC |
North America service minimum | 15A |
International service minimum | 10A or 16A |
Power Source Input | 110/120 or 220/240 |
The regenerator includes a system grounding (earth) receptacle that has two screw holes that are located on the front panel above the power switch. The length of the grounding wire depends on the location of your regenerator and the site environment. (See Figure 3-2).
| Caution Install proper grounding at the site to avoid damage from lightning and power surges. |
To ensure that your system grounding connection is adequate, you will need the following parts:
Use Figure 3-4 as a reference for the following procedure.
Perform the following procedure to connect or disconnect the AC power supply:
Step 1 Verify that the power switch on the Cisco Optical Regenerator is in the OFF (0) position. (See Figure 3-4d)
Step 2 Connect the AC power cord to the AC power supply receptacle on the Cisco Optical Regenerator. (See Figure 3-4a).
Step 3 Close the spring clip over the power cord plug. (See Figure 3-4b).
Step 4 Connect the other end of the AC power cord to the source AC receptacle. (See Figure 3-4c).
Step 5 Turn the power switch to ON (|). (See Figure 3-4d).
This completes the instructions to connect or disconnect the AC power supply. Proceed to the section, "Verifying the AC Power Supply Installation."
To complete the installation, check the LEDs on the front of the Cisco Optical Regenerator to verify that the power supply is operating properly. (See Figure 3-5)
Perform the following procedure to verify AC power supply installation:
Step 1 Check the following components to make sure they are secure:
Step 2 Verify the power supply.
Step 3 Verify that the Cisco Optical Regenerator powers ON. Visually check that the green LED light signifies that the power supply is ON. This indicates that the AC voltage source is within the range of 90 to 264 VAC.
Step 4 Check the following areas for possible problems, if the power LED is off:
Step 5 Visually check the LEDs during startup. If a failure occurs upon startup, the red system fail LED will come on, and the green system ready LED will flash to indicate that a failure has occurred.
Step 6 If the system fail LED goes on, turn the power OFF.
The DC power supply is used most often when the Cisco Optical Regenerator is installed in a lab or a populated site with direct configuration access to routers and a PC terminal. If you plan to use a DC-powered regenerator in an onsite network environment, place it near external electrical power devices that the Cisco Optical Regenerator will use as a power source.
| Caution Check the power at your site to ensure that you are receiving clean power (free of spikes and noise). Install a power conditioner, if necessary, to ensure proper voltages and power levels in the source voltage for the system. |
| Caution Install proper grounding at the site to avoid damage from lightning and power surges. |
A DC-powered Cisco Optical Regenerator is equipped with a single -40.5/-75 VDC central office (CO) power supply with redundant inputs from Battery A and Battery B. Table 3-2 lists the DC power supply specifications.
| Description | Design Specification |
|---|---|
Power (input) | 125W |
Input power cable | commensurately-rated wire gauge |
Source voltage range | -40.5V to -75V |
A DC-powered Cisco Optical Regenerator has a system grounding (earth) receptacle that has two screw holes that are located on the front panel above the power switch. The installed DC power supply located on the far right of the regenerator chassis has a grounding screw.
To ground a DC-powered Cisco Optical Regenerator, you must attach the grounding lug with the following parts:
Tie a grounding wire from the DC grounding screw to the grounding lug.The length of the grounding wire depends on the location of your regenerator and the site environment. The wire comes from the source ground.
Perform the following steps to connect the DC power supply as shown in Figure 3-7.
Step 1 Verify that the circuit breaker at the power source for the Cisco Optical Regenerator is in the OFF position.
Step 2 Locate the source wires from the two external electrical power devices that you want to configure with the Cisco Optical Regenerator.
Step 3 Use the wire strippers to strip 3/8 of an inch of the wire cover from each source.
Step 4 Insert the stripped wire from each external electrical power into the appropriate hole in the terminal block.
Step 5 Use the 3/16 flat blade screwdriver to tighten the screws on the DC terminal block.
Step 6 Turn the circuit breaker on the power source to power ON the Cisco Optical Regenerator.
This completes the instructions to connect the DC-power supply. Proceed to the section, "Verifying the DC Power Supply Installation," to verify the installation.
To verify that the power supply is operating properly perform the following procedures:
Step 1 Check the following components to make sure they are secure:
Step 2 Verify that the Cisco Optical Regenerator powers ON. The green power LED indicates that the power supply is ON, and the DC voltage source is within VDC range.
Step 3 If the power LED is OFF, check the following areas for possible problems,:
Step 4 Visually check the LEDs during startup. If a failure occurs upon startup, the red system fail LED will come on, and the green system ready LED will flash to indicate that a failure has occurred.
Step 5 If the system fail LED goes on, turn the power source OFF.
Posted: Fri May 12 11:10:57 PDT 2000
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