H801MPWD-AC power board
The H801MPWD board is an AC power board, consisting of an AC power
unit and a monitoring unit. The board supplies power to the device
and supports the lead-acid battery for power backup. The AC power
unit provides overcurrent protection, output overvoltage
protection, short circuit protection, and over-temperature
protection. The monitoring unit provides comprehensive management
for the power system and storage battery, and also provides certain
environment monitoring functions.
Overview
The H801MPWD board supports the following functions and
specifications:
- Input AC voltage: -100 V to -240 V
- Input AC frequency: 50 Hz to 60 Hz
- Single-phase three-wire AC power input
- Battery port, a 3V3 terminal socket, supporting DC input power
- Lead-acid battery input, reverse polarity protection, and fuse
protection
- Output DC power voltage: -48 V (adjustable from -42 V to -57.6 V)
- Rated output power: 400 W
- Alarm monitoring
- Enabling and disabling of the rectifier module; equalized and float
charging for the rectifier module
- Battery low voltage disconnection; charge and discharge management
of storage batteries
Working Principle
Figure 1 illustrates the working principle of the H801MPWD board.
Figure 1 Working principle of the H801MPWD board
The basic working principle of the H801MPWD board is as follows:
- AC input power is supplied to the board. After AC/DC conversion,
the power is supplied to the system backplane at -48 V
(adjustable).
- The board supports battery input. The monitoring unit manages the
charging and discharging of batteries.
- The board communicates with the system through the backplane,
reporting board hardware and electronic label information to the
backplane.
- The board supports communication with the monitoring unit through
the 485 protocol to adjust voltage and current and report alarm
information.
- The board supplies 3.3 V power from the system to the monitoring
unit.
- The monitoring unit manages lead-acid batteries.
- The optical coupler implements the battery low voltage
disconnection function.
- The board provides power distribution checking and alarm reporting
functions.
Panel Description
Table 1 describes the front panel of the H801MPWD board.
Table 1 Front panel of the H801MPWD board
| |
AC IN: AC input LED |
Green: on | Indicates that the AC input power is normal. |
Off | Indicates that the AC input power is abnormal. |
DC OUT: DC output LED |
Green: on | Indicates that the DC output power is normal. |
Off | Indicates that the DC output power is abnormal. |
BAT: Power input LED |
Green: on | Indicates that the relay is picked up. |
Off | Indicates that the relay drops out. |
PMU: Running status LED |
Green: on for 0.25s and off for 0.25s repeatedly | Indicates that program loading is in progress. |
Green: on for 1s and off for 1s repeatedly | Indicates that the board runs normally. |
Red: on for 0.25s and off for 0.25s repeatedly | Indicating that the board is starting up. |
Red: on | Indicates that a critical alarm is reported. |
Orange: on for 0.25s and off for 0.25s repeatedly | Indicates that a minor alarm is reported. |
Ports
The ports of the H801MPWD board are located on its front panel.
Table 2 describes the ports of the H801MPWD board.
Table 2 Table 1-3 Ports of the H801MPWD board
Port | Function | Connection |
|---|
AC input port | Connected to the power socket and used for AC power input | Cable requirements: low-smoke halogen-free;
brown for L wire; blue for N wire; yellow green for PE wire |
Battery input port | Connected through a 3V3 connector and used for battery input | - |
Port for battery temperature sensor | Connected to the temperature sensor | - |
Specifications
Table 3 lists the specifications of the H801MPWD board.
Table 3 Specifications of the H801MPWD board
Board | Dimensions (W x D x H) | Power Consumption |
|---|
H801MPWD | - Metric: 35.56 mm x 237.00 mm x 134.84 mm
- Imperial: 1.4 in. x 9.33 in. x 4.49 in.
| - Static: 2 W
- Maximum transfer efficiency: 93% (220 V, 100% load, 25°C)
|
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