Input inrush current surge, Dc-input – Rockwell Automation 1606-XLP50E Power Supply Reference Manual User Manual
Page 5
All parameters are specified at 24V, 2.1A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM034A-EN-P — March 2014
5
Bulletin 1606 Switched Mode Power Supplies
6. Input Inrush Current Surge
A NTC limits the input inrush current after turn-on of the input voltage. The inrush current is input voltage- and
ambient temperature-dependent.
AC 100V
AC 120V
AC 230V
Inrush
current
max.
18A
peak
23A
peak
48A
peak
40°C ambient, cold start
typ.
14A
peak
17A
peak
35A
peak
40°C ambient, cold start
Inrush
energy
typ.
0.3A
2
s 0.4A
2
s 1.5A
2
s
40°C ambient, cold start
Fig. 6-1
Input inrush current, typical behavior
Fig. 6-2
Input inrush current, zoom into the first peak
Input: 230Vac
Output: 24V, 2.1A
Ambient: 40°C
Upper curve: Input current 20A / DIV
Middle curve: Input voltage 1000V / DIV
Lower curve:
Output voltage 20V / DIV
Time scale: 20ms / DIV
Input: 30Vac
Output:
24V, 2.1A
Ambient: 40°C
Input current curve: 10A / DIV, 1ms / DIV
Ipeak 32.4A
The charging current into EMI suppression capacitors is
disregarded in the first microseconds after switch-on.
7. DC-Input
%
0
3
+
/
%
5
2
-
V
0
9
2
-
0
1
1
C
D
.
m
o
n
t
u
p
n
i
C
D
n
o
i
t
a
r
e
p
o
s
u
o
u
n
i
t
n
o
C
c
d
V
5
7
3
-
5
8
.
n
i
m
e
g
n
a
r
t
u
p
n
i
C
D
A
1
.
2
d
n
a
V
4
2
t
a
c
d
V
0
0
3
/
c
d
V
0
1
1
A
9
1
.
0
/
A
0
5
.
0
.
p
y
t
t
n
e
r
r
u
c
t
u
p
n
i
C
D
e
u
l
a
v
e
t
a
t
s
y
d
a
e
t
S
c
d
V
1
8
.
p
y
t
e
g
a
t
l
o
v
n
o
-
n
r
u
T
Shut-down voltage typ.
58Vdc Steady state value
Fig. 7-1
Wiring for DC Input
Fus
e
+
-
Load
L
N
PE
+
-
Power Supply
AC
DC
Battery
internal
fused
Instructions for DC use:
a)
Use a battery or similar DC source.
b)
Connect +pole to L and – pole to N.
c)
Connect the PE terminal to a earth wire or
to the machine ground.
d)
In case the – pole of the battery is not
connected to earth, use an appropriate fuse
to protect the N terminal.