Fan-Tray Assembly - Cisco ONS 15454 Hardware Installation Manual

Fan-Tray Assembly

Figure 157: DC Power Modules Installed in the ONS 15454 M2 Shelf
Step 4
Return to your originating procedure (NTP).
Fan-Tray Assembly
The fan-trays supported on the Cisco ONS 15454 M2 shelf are 15454-M2-FTA and 15454-M2-FTA2. The
15454-M2-FTA2 fan-tray provides increased airflow when compared to the 15454-M2-FTA fan-tray. The
15454-M2-FTA2 is compatible with R9.2.0 and later releases.
The fan-tray assembly is installed on the left side of the ONS 15454 M2 shelf. The fan-tray assembly is
removable and holds the fan-control circuitry and the fans for the ONS 15454 M2 shelf.
There are four LEDs on the fan-tray assembly:
• Three alarm LEDs (CRIT, MAJ, and MIN) that indicate whether a critical, major, or minor alarm is
• One fan fail LED that indicates fan failure.
When the fan-tray assembly is not functioning and the power line is not connected, the LED is OFF. A red
LED indicates an alarm in the fan-tray assembly. A green LED indicates that the fan-tray assembly is
functioning, the power line is connected, and the power module is functioning properly, the LED is green.
When the power line is connected and if there is no TNC, TNCE, TSC, TNCS-2, TNCS-2O, or TSCE card
installed in the ONS 15454 M2 shelf, then the LED is OFF.
The shelf controller card controls the conditions that result in triggering the LEDs. The LED can be overwritten
by the shelf controller card (TNC, TNCE, TSC, TNCS-2, TNCS-2O, or TSCE) in all the three states
(OFF/red/green). The fan-tray assembly supports the lamp test procedure.
The fan-tray assembly has an LCD screen that provides slot and port-level information for all card slots, and
the number of critical, major, and minor alarms. The shelf controller card (TSC, TSCE, TNC, TNCS-2,
TNCS-2O, or TNCE) drives the 16 X 2 character LCD screen. The LCD screen displays the shelf name, IP
address, and software version that is currently used. The display contrast is automatically adjusted for clear
view. The three accessible push buttons (SLOT, STATUS, and PORT) on the fan-tray assembly are used to
set the slot and port level parameters.
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present anywhere on the ONS 15454 M2 shelf.
Installing the ONS 15454 M2 Shelf