Mean Well LAD Series, Руководство пользователя, Страница: 13 / 26

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5. UART Communication Function(U version only) 2
The various fault signals, power supply working status, single LAD
battery voltage, main voltage, output voltage and output current to the
controller through the UART, and changes the power supply working
status according to the controller instructions. For details. please refer
to the 5.4.
5.2.1Forced Start & Remote UPS Control(U version only)
BAT. CHARGER
+V
BAT+
-V
BAT-
UPS
FUNCTION
Remote UPS Control
Force Start
UPS Mode
RELAY
S.W
~
Both "forced start" and " "can force the power remote UPS control
supply ( ) . Both can be used to operate in battery back UPS mode
separately or simultaneously. When at the same time, implemented
the priority of "Forced Start" is higher than " UPS Control" remote .
5.2.1.1 Force start UPS mode:
According to fire safety regulation, UPS power supply must equip with
force start UPS function. In case of emergency, maintenance or testing,
Operators can active the UPS mode by shorting PIN1 and PIN2 of LAD-
360/600xU to ensure
supply to the loads. When battery power
operating under UPS mode, the BAT. UVP alarm is still active, but the
BAT. UVP protection
invalid, therefore, the battery will be fully dis is
charged until system shuts down.
16 15
2
1
PIN1 2 &
5
Short
Open
Status
Forced start
Normal
20
●
Description of orce f start UPS mode
(1) In the case of no AC input power supply, when the backup power
switch is OFF, PIN 1 and 2 need to be short-circuited all the time, to
force the UPS function to start, and keep the battery powered; when
PIN 1, 2 is open, the battery power supply is disconnected.
(2) In the case of no AC input power supply, when the backup power
switch is ON, PIN 1 and 2 need to be short-circuited , to force the UPS
function to start, powered by battery. When PIN1, 2 are shorted and
disconnected after a few seconds, the battery power is still maintained.
5.2.1. Remote UPS mode 2
PIN3 4 &
Short
Open
Status
Romote UPS control
Normal
Remote UPS mode:
According to fire safety regulation, UPS power supply must equip with
remote UPS function. So the power supply unit can be linked to the fire
alarm system, user's system will be able to detect the status of PIN3 and
PIN4 LAD-360xU with UART communication. When PIN 3 and PIN 4 is
shorted, the power supply will enter remote UPS mode. Therefore, the
UPS mode will be active and the status signal will also send to the fire
alarm system for indication. Personal or the system can use the signal as
trigger threshold for other alarm systems to decide when and how to
enter the emergency sequence. Under this condition, BAT. UVP alarm
and protection are still active.
Pin 5 & 6
Short
Open
Battery Type
Li-ion batteries
Lead-acid (Pb) batteries
5.2. Charging curves of different batteries 2
4
3
16 15
16 15
6
5
5
Two different charging curves can be determined through the short
circuit and open circuit of pin 5&6.