S
8
JX
47
S8JX-G
S8JX-P
Common Precautions
Overvoltage Protection
Consider the possibility of an overvoltage and design the system so
that the load will not be subjected to an excessive voltage even if the
feedback circuit in the power supply fails. When an excessive voltage
that is approximately 130% of the rated voltage or more is output, the
output voltage is shut OFF, preventing damage to the load due to
overvoltage. Reset the input power by turning it OFF for at least three
minutes and then turning it back ON again.
Consider the possibility of an overvoltage and design the system so
that the load will not be subjected to an excessive voltage even if the
feedback circuit in the Power Supply fails. When an excessive voltage
that is approximately 130% of the rated voltage or more is output, the
output voltage is shut OFF, preventing damage to the load due to
overvoltage and simultaneously the alarm indicator will be lit. Reset
the input power by turning it OFF for at least three minute and then
turning it back ON again.
(Reference value)
Note:
Do not turn ON the power again until the cause of the
overvoltage has been removed.
Output peak current (300-W 24V, 600-W 24V
Models)
The following conditions should be satisfied for the peak current
value.
Note: 1.
Do not hold peak load current over 10 seconds.
In addition, you should not use duty cycle under conditions
beyond above figure.
It may cause damage in its power supply.
2.
Please derate peak load current depending on ambient
temperature and mounting orientation.
3.
Please keep the average current of peak load cycle from
becoming more than the rated value.
Overheat Protection
If the internal temperature rises excessively as a result of fan failure
or any other reason, the overheat protection circuit will be triggered to
shut OFF the output voltage.
The alarm indicator lights at the same time. Reset the input power by
turning it OFF for at least three minutes and then turning it back ON
again.
Inrush Current, Startup Time, Output Hold Time
Note:
A maximum startup time of 1,000 ms is required. Construct a
system configuration that considers the startup time of other
devices.
50-/100-/150-W Models
300-/600-W Models
O
u
tp
u
t
v
oltage (
V
)
O
v
er
v
oltage protection
Operating
V
aria
b
le range
Rated o
u
tp
u
t
V
oltage
0
V
[A]
•
t1
•
Ip
•
la
v
e
≤
10 s
≤
rated peak c
u
rrent
≤
rated c
u
rrent
Ip: peak c
u
rrent
la
v
e: a
v
erage c
u
rrent
t2
t1
D
u
ty=
t1+t2
t1
×100 [
%
]
≤
35
%
(1
8
0 to 240
V
AC)
o
u
tp
u
t c
u
rrent
300-/600-W Models
Start
u
p time
Hold time (20 ms min.)
AC inp
u
t
v
oltage
AC inp
u
t
c
u
rrent
O
u
tp
u
t
v
oltage
Inr
u
sh c
u
rrent on inp
u
t application
90
%
96.5
%
Inp
u
t O
N
Inp
u
t OFF
Summary of Contents for S8JX-G Series
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