VP-1405A Advanced Power
Chapter 2 - System Overview
V-PM1000 Series, Veesta Power Module Product Series
48V Power Supply & Charger Instructions & User's Manual
Page 13 of 46
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When the load requires a large inrush current and exceeds the
maximum current supplied by the power supply, the power supply will
be protected and turned off by itself. Then the load current is
completely provided by the battery. When the load current is less
than the maximum current supplied by the power supply, the power
supply automatically starts working.
For more information please see the internal circuit of VP-1405A on
the bellow picture:
Figure 2-1: VP-1405A Design Principal
L
LOAD
19, 20
-
+
Isolated
RS485
Modbus RTU
48V System
21, 22
VO+
VO-
N
FG
Alarm Outputs
A+ (D+)
B- (D-)
Battery Pack
48V
1 2
3
6
Input
EMC Fi
lt
e
r
High Voltage
Rec
tifica
tion Filte
r
P.W.M
Contro
ll
e
r
Se
cti
on
Out
pu
t
Re
cti
ficat
ion F
ilter
Out
pu
t
De
tec
ti
on
and
Protec
ti
on
Key Function
Status Display
Volt & Current
Adjustment
Centralized
Processing
Controller
Battery
Input/Output
Protection
6
A+ (D+)
B- (D-)
RJ-45
Connector
Alarm: 1 2 3 4
7
8
9
5
10
C1 C2 C3
Ba
tt
ery
Disc
harge
Manage
men
t
Ba
tt
ery
C
harge
Manage
men
t
System Monitoring
and Supervisory
Battery
Activation
Management
Isolation
Barrier
P
P
o
o
w
w
e
e
r
r
C
C
o
o
n
n
v
v
e
e
r
r
s
s
i
i
o
o
n
n
220VAC
Input
1
2
3
11
12
14
15, 16
17, 18
