Whether the DC Power Board PDIA of the MA5616/MA5610 Supports Reporting an Alarm In Case of Power-off?

The DC power board PADI of the MA5616/MA5610 supports reporting the dying-gasp alarm, but does not report the alarm in case of power-off due to certain causes. After 220 V AC mains supply is converted into -48 V DC power by the 4820, it is input into the PDIA power board to supply power for the control board.

• If the input of 220 V mains supply is cut, it is less probable for the PDIA power board to report an alarm in case of power-off.
• If the 4820 power supply is faulty, that is, if the input of -48 V DC power is cut, the PDIA power board will report an alarm.

The power of the power system is large, but its load (the MA5616/MA5610) consumes little power. After 220 V AC mains supply is cut, the waveform of the lower -48 V DC power is slowly dropped drown. The MA5616/MA5610 reports the dying gasp alarm only after the voltage drops to lower than -42V. At this moment, however, all the system power for reporting the dying gasp alarm is almost consumed, causing a failure in reporting the dying gasp alarm.