Emerson R48-1800A Rectifier Module

Model: R48-1800A

Brand: Emerson

Input: 200-250v 12a 50 / 60Hz

Output: - 48V 1740w Max

Main protection functions of R48-1800A Emerson high frequency switching power supply module

1. Input over / under voltage protection

When the input voltage is less than 80vac ± 5vac or greater than 305vac ± 5vac, the protection indicator (yellow light) will be on, and the module will stop working without output. When the input voltage returns to 97.5 ~ 295vac, the rectifier module automatically returns to normal operation.

When the overvoltage protection event occurs, the module will report to the monitoring module.

2. Output overvoltage protection

The rectifier module has output overvoltage hardware protection and output overvoltage software protection. The hardware over-voltage protection point is between 59.5v ± 0.5V. After hardware over-voltage protection, manual intervention is required before starting. The software protection point can be set through the monitoring module. The setting range is 56-59v, which is 0.5V higher than the output voltage. The factory default value is 59V.

The software overvoltage protection mode can be selected by monitoring module

1) Primary overvoltage lock mode

When the software over-voltage occurs in the rectifier module, the rectifier module is shut down and maintained, which can be recovered by manual intervention;

2) Secondary over voltage locking mode

After the software protection of rectifier module, it will restart within 5 seconds after shutdown. If the second over-voltage occurs within the set time (5 minutes by default, which can be set by the monitoring module), the rectifier module will be shut down and maintained, and it can be started only after manual intervention. Manual intervention method: the rectifier module can be reset by monitoring module, or by detaching the rectifier module from the power system.

When the overvoltage fault occurs, the module reports the fault signal to the monitoring module for corresponding processing.

3. Over temperature protection

When the air inlet of the module is blocked, the ambient temperature is too high or the fan failure causes the internal temperature of the module to reach 98 ℃, the protection indicator light (yellow light) on the module panel will be on, and the module will stop working without output. When the abnormal conditions are cleared and the temperature inside the module returns to normal, the module will automatically return to work and the over temperature alarm will disappear.

When the over temperature protection occurs, the module reports the alarm signal to the monitoring module for corresponding processing.

4. PFC output over / under voltage protection

When the bus voltage inside the module exceeds the over / under voltage protection point, the module will automatically shut down for protection, the module has no output, and the protection indicator light (yellow light) on the module panel will be on.

When the PFC input overvoltage protection occurs, the module reports the alarm signal to the monitoring module for corresponding processing.

5. Fan fault protection

When the fan fails, the module will generate a fan fault alarm, the fault indicator (red light) on the module panel will flash, and the module will shut down without voltage output. After the fault is eliminated, it can return to normal operation automatically.

When the fault event occurs, the module reports the alarm signal to the monitoring module for corresponding processing.

6. Short circuit protection

The rectifier module adopts constant current protection mode. In the case of output short circuit, the output current of the module is kept constant, and the current is ≤ 33A, which effectively protects itself and external equipment; when the short-circuit fault disappears, the module automatically recovers to work.

7. The output current is unbalanced

When multiple rectifier modules are used in parallel in the system, the module with large current sharing error can be identified automatically and the protection indicator light (yellow light) on the module panel can be turned on;

When the average current of the module on the system is greater than 6a and the module current is less than 1a, it is judged as serious uneven current fault, and the red light is on; when there are two or more modules with the same ID on the same system, the red light is on.

If the output current of the module is seriously unbalanced, the module whose current sharing error is greater than 5A and has no output can be automatically identified and the fault indication (red light) on the module panel will be turned on.

After the fault is eliminated, it can return to normal operation automatically.

When the fault occurs, it will be reported to the monitoring module for processing.

8. The background communication is interrupted

After the communication interruption of the module, the protection indicator light (yellow light) on the module panel flashes. When the module communication is restored, the protection indicator (yellow light) of the module panel will return to normal. When the communication of the module is normal, the module will resume working automatically.

In order to protect the battery, when the module communication failure, the output voltage of the module changes to 53.5v (different voltages can be set in advance according to the actual needs).