S8EA
17
Overload Protection
• Internal parts may possibly deteriorate or be damaged if a
shortcircuited, overload or boost load state continues during
operation.
• Internal parts may possibly deteriorate or be damaged if the Power
Supply is used for applications with frequent inrush current or
overloading at the load end. Do not use the Power Supply for such
applications.
Charging Batteries
When connecting a battery at the load, connect an overcurrent-
limiting circuit and overvoltage protection circuit.
In Case There Is No Output Voltage
A possible cause for no output voltage may be that the overcurrent or
overvoltage protection has operated. The internal protection may
operate if a large amount of surge voltage, such as a lightening surge,
is applied to the input.
In case there is no output voltage, please check the following points
before contacting us:
• Checking the Overcurrent Protected Status
Check whether the load is in overcurrent status or is short-
circuited. Remove wires to load when checking.
• Checking overvoltage or internal protection:
Turn the power supply OFF once, and leave it OFF for at least
3 minutes for S8EA series. Then turn it ON again to see if this
clears the condition.
Power Boost Function
• Do not allow the boost current to continue for more than 10
seconds. Also, do not let the duty cycle exceed the following
conditions. This may damage the Power Supply.
• Lessen the load of the boosted load current by adjusting the
ambient temperature and the mounting direction.
• Ensure that the average current of one cycle of the boost current
does not exceed the specified value. This may damage the Power
Supply.
Note:
Make sure that the boost current meets the above conditions.
Consult with your OMRON representative if any other
conditions are required.
Ripple Noise Voltage
The specified standard for the ripple voltage noise was measured with
a measurement circuit that is based on JEITA standard RC-9131B.
Models
Boost current conditions
S8EA-BN05024
@
(50 W)
S8EA-BN07524
@
(75 W)
S8EA-BN10024
@
(100 W)
S8EA-BN15024
@
(150 W)
[A]
la
v
e: A
v
erage c
u
rrent
t1
t2
lp: Boost c
u
rrent
O
u
tp
u
t c
u
rrent
• la
v
e
≤
Rated c
u
rrent
• lp
≤
Rated
b
oost c
u
rrent
• 90 to 132
V
AC
• t1
≤
10 s
•
D
u
ty
t1
t1+t2
=
× 100[
%
]
≤
35
%
S
8
EA
Oscilloscope
fre
qu
ency
b
and:
100 MHz
C1
C2
Load
C1: 100
μ
F
C2: 0.1
μ
F
150 mm
Coaxial ca
b
le
+
V
−
V
