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The functional version of the PIUA single board of Huawei OSN 2500 equipment is Q1.The Q1 PIUA can be used with the normal and enhanced subracks of the OptiX OSN 2500.The PIUA single board provides the main circuit insurance F1: 250V-20A-0.00355Ω.When replacing the PIUA power board in the high-power subrack of Huawei OSN 2500 equipment, if the power board adopts a 1+1 backup, the backup PIU power board is replaced with no impact on the service.
When replacing a single board, you must first turn off the power switch on the DC power distribution box, and do not allow the interface to have a power plug attached. After the PIU is plugged in, then plug in the power plug, and finally turn on the power switch on the DC distribution box. At the same time, pay attention to the correspondence between the faulty veneer and the air switch of the DC distribution box to avoid misoperation on the spot causing the subrack to drop out or the power supply to be short-circuited.
Operation steps
1. Select spare parts. Select the spare parts with the same parameters as the replaced veneer. For the parameter information of the veneer, see Name and Characteristics.
2. Query and record the current alarm of the veneer.
3. Record the cable connection position of the single board and remove the cable.
4. Replace the veneer.
The Huawei OSN2500 device reports BD_STATUS when the PIU veneer is unplugged, and the alarm is lifted when the new veneer is brought online.
- If the replaced veneer is not configured with protection, the veneer is replaced directly.
- Configure protection to replace the primary and backup boards.
a. Replace the spare board.
b. Verify that the single board is working properly. Query the veneer alarms to verify that the original alarms have been cleared.
c. Restore the cable connections to the replacement veneer board to ensure that the spare board is also being powered.
d. Query the alarms and performance events in the network management, there are no new alarms and performance events, and query the normal operation of the service, indicating that the reversal is successful.
e. Replace the current spare veneer.
f. Verify that the single board is working normally. Query the single board alarms and confirm that the original alarms have been lifted. The corresponding PWRA or PWRB on the SAP veneer board should light green, depending on whether the power is accessed from A or B circuit.
g. Restore the single-board cable connection.
5. Verify thatthe PIU power supply board of theHuaweiOSN2500device works normally. Query the single-board alarms and confirm thatthe original alarms ofthe SDH equipmenthave been lifted.
The PIUA single-board indicators contain mechanical indicators, power consumption, input voltage, and fuse.
Mechanical indicators
The mechanical specifications of the PIUA veneer are as follows:
Veneer size: 73.0mm (W) x 241.2mm (D) x 90.3mm (H)
Weight: 0.8kg
Power consumption
The maximum power consumption of the PIUA veneer is 0W at room temperature (25°C).
Input Voltage
The input voltage range of the PIUA single board is:
If the standard voltage of the input power supply is -48V, the power supply voltage is between -38.4V and -57.6V.
If the standard voltage of the input power supply is -60V, the supply voltage is between -48V and -72V.
The related technical information in this chapter and the SDH equipment troubleshooting process are collected and organized by Shenzhen Optical Transmission Network Technology Company Limited ( www.opticaltrans.com), and are reproduced and retained! Our company specializes in Huawei SDH optical transmission equipment, SDH transmission equipment sales.
