Product Description MA5603T Fan Tray(FMCA) A fan tray functions heat dissipation, monitoring, and fan speed adjustment, which ensures that the device works at a stable temperature. Appearance Six fans are configured in the fan tray (FMCA) of the MA5603T. Specification Item Specification Dimensions (W x D x H) 53.0 mm x 272.5 mm x 245.7 mm Weight 2.0 kg Power consumption (including FMCA board) Static: 30 W Maximum: 72 W Function The functions of the fan tray are as follows: Heat dissipation The fan tray is at the left of the service subrack and blows air for heat dissipation of the service subrack. The cool air flows to the subrack from the left of the subrack and then is exhausted from the right of the subrack after passing the boards. Monitoring The fan tray is configured with a fan monitoring board. The fan monitoring board transmits speed adjustment signals to the fan tray, collects the rotating speed signals of the fans, and reports the rotating speed signals to the control board. Speed adjustment The rotating speed of the fans can be adjusted according to the detected temperature automatically or be adjusted by software manually. LED Indicator Status Meaning Operation Description STATUS Yellow: blinks every 0.3s The fan tray is not registered or is being loaded. No action is required. The communication between the host and the fan tray is interrupted. Check communication between the fan tray and device. Green: blinks The fan tray works in the normal state. No action is required. Yellow: blinks every 1s The fan tray generates alarms that do not affect services. Handle it based on the corresponding alarm. Red: blinks The fan tray is faulty or the fan tray generates an over-temperature alarm. Increase the fan speed to lower the temperature. Replace the faulty fan tray. DIP Switches The fan tray uses the FMCA monitoring board, which supports the -48 V / -60 V input voltage, which provides a set of DIP switches S1. Table 1 describes the settings of S1. Table 1 Settings of S1 DIP Switch Indication Default Settings S1-1 It is used to set the subnode address of the fan tray that maps the data configuration. ON: The address bit is 0. OFF: The address bit is 1. By default, the address bit is 1. OFF S1-2 ON S1-3 ON S1-4 ON The baud rate of the communication between the fan tray and the control board is 19200 bit/s. ON OFF The baud rate of the communication between the fan tray and the control board is 9600 bit/s. S1-5 It is used to set the quantity of fans. ON S1-6 ON S1-7 It is used to set the mode of adjusting the fan speed. ON S1-8 ON Table 2, Table 3, and Table 4 describe the settings of the DIP switches of S1. Table 2 Settings of S1-1, S1-2, and S1-3 S1-3 S1-2 S1-1 Address Value ON ON ON 0 ON ON OFF 1 ON OFF ON 2 ON OFF OFF 3 OFF ON ON 4 OFF ON OFF 5 OFF OFF ON 6 OFF OFF OFF 7 NOTE: When S1-1, S1-2, and W1-3 are used to set the subnode address, make sure that the DIP switch settings are consistent with the data configuration. But the subnode address value cannot be the same as that of the environment monitoring board. Table 3 Settings of S1-5 and S1-6 S1-6 S1-5 Fan Quantity ON ON 6 ON OFF 8 OFF ON 4 OFF OFF 10 Table 4 Settings of S1-7 and S1-8 S1-8 S1-7 Speed Adjustment Mode Adjustment Strategy ON ON Temperature measurement at the air intake vent (reserved) Strategy 1 ON OFF Temperature measurement at the air exhaust vent Strategy 2 OFF ON Temperature measurement at the air intake vent Strategy 3 OFF OFF Temperature measurement at the air intake vent (the fan stops rotating) Strategy 4 NOTE: The fan tray (FMCA) of the MA5603T must use speed adjustment policy 1. Fan Speed Adjustment Set the fan speed adjustment mode to automatic or manual in the command line interface (CLI). After the fans are installed, they work in automatic mode by default. Automatic mode Control-system-triggering: The control system automatically adjusts fan speed according to the board temperatures for energy conservation. Monitoring-board-triggering: The speed is automatically adjusted based on the temperature which is detected by a temperature sensor. NOTE: The automatic mode has two variants (automatically selected by the system): control-system-triggering and monitoring-board-triggering. Manual mode Commands are executed to adjust fan speed. The levels range from 0 to 6, level 0 being the lowest speed and level 6 being the highest speed.
