Cisco Cisco ONS 15310-MA SONET Multiservice Platform Guía De Instalación
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Installing the Fan-Tray Assembly in the
Cisco ONS 15310-MA
Cisco ONS 15310-MA
Product Name: 15310-MA-FTA
This document explains how to install the fan-tray assembly in the Cisco ONS 15310-MA. It also
contains a description of the fan-tray assembly, installation equipment and procedures, and a list of
specifications. As appropriate, use this document in conjunction with the Cisco ONS 15310-CL and
Cisco ONS 15310-MA Procedure Guide, the Cisco ONS 15310-CL and Cisco ONS 15310-MA
Reference Manual, and the Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide
when working with the fan-tray assembly.
contains a description of the fan-tray assembly, installation equipment and procedures, and a list of
specifications. As appropriate, use this document in conjunction with the Cisco ONS 15310-CL and
Cisco ONS 15310-MA Procedure Guide, the Cisco ONS 15310-CL and Cisco ONS 15310-MA
Reference Manual, and the Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide
when working with the fan-tray assembly.
This document contains the following sections:
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Fan-Tray Assembly Description
The fan-tray assembly is located at the top of the ONS 15310-MA shelf assembly, under the air filter,
rear exhaust, and air inlet. The fan tray is a removable drawer that holds four fans, the fan-control
circuitry, and the fuse-control circuitry for the ONS 15310-MA. After you install the fan tray, you should
only need to access it if a fan failure occurs.
rear exhaust, and air inlet. The fan tray is a removable drawer that holds four fans, the fan-control
circuitry, and the fuse-control circuitry for the ONS 15310-MA. After you install the fan tray, you should
only need to access it if a fan failure occurs.
The new fan-tray assembly (FTA2) has a fuse-control circuitry that is capable of blowing a low-current
fuse (1/4-A to 1/2-A). This is useful when you are using power distribution equipment that has a low
current fuse connected in parallel with the main fuse to help detect any failures in the main fuse. The
fuse-control circuitry independently draws a short current (approximately 900 mA) for about 0.7 seconds
every 15 minutes (at 24 degrees Celsius or 75.2 degrees Fahrenheit), alternating between power supply
inputs A and B. This allows the ONS 15310-MA to blow the low current fuse when there is a failure or
loss of the main fuse and report an alarm (FAN alarm).
fuse (1/4-A to 1/2-A). This is useful when you are using power distribution equipment that has a low
current fuse connected in parallel with the main fuse to help detect any failures in the main fuse. The
fuse-control circuitry independently draws a short current (approximately 900 mA) for about 0.7 seconds
every 15 minutes (at 24 degrees Celsius or 75.2 degrees Fahrenheit), alternating between power supply
inputs A and B. This allows the ONS 15310-MA to blow the low current fuse when there is a failure or
loss of the main fuse and report an alarm (FAN alarm).