S8JXG05012CD Datasheet, PDF (44/59 Pages) Omron Electronics LLC – Switch Mode Power Supply

S8JX
Remote sensing function
This function is used when compensating the voltage drop of the load
line.
The remote sensing function is operated by connecting +S terminal (2
pin on CN) to +side of the load terminal and -S terminal (4 pin on CN)
to -side of the load terminal.
When the remote sensing function is not used, using a connector
provided as standard enables the connection between +S and +V
terminals (1 pin on CN) and between -S and -V terminals (3 pin on
CN) respectively.
+V
*2
S8JX
+
CN
–V
+V +S –V –S
*1
Note: 1. Use a two-core shield wire for connection line (*1).
2. If the voltage drop on a load line (*2) is large, the output
voltage of the power supply may rise by the voltage drop
amount and activate the overvoltage protection. Therefore,
be sure to use as thick a wire as possible.
3. Be sure to use the voltage drop at 0.3 V or less.
4. If the load line is long, be sure to use an electrolytic
capacitor between the load terminals. As the used
electrolytic capacitor may be heated by ripple current due to
the connected load, be sure to use an electrolytic capacitor
having an allowable ripple current exceeding the used ripple
current.
5. Opening status of +S and -S terminals may deteriorate the
output stability and accuracy. Therefore, be sure to connect
+S and -S terminals.
6. Remove a connector provided as standard and prepare a
harness separately.
Remote control function
This function is to turn ON/OFF the output by an external signal using
+RC terminal (7 pin on CN) and -RC terminal (8 pin on CN) while input
voltage remains applied. To use this function, connect a switch or a
transistor to +RC and -RC terminals.
When not in use, use the standard supplied connector to short-circuit
+RC and -RC terminals.
S8JX
+RC
CN
–RC
SW TR
Alarm detection function
When output voltage drops due to overcurrent protection, overvoltage
protection, or overheat protection in operation or input voltage drop,
when the built-in fan stops, or when the Power Supply goes standby
by remote control, the alarm indicator (LED: red) lights up to indicate
the output voltage trouble. In addition, the transistor outputs that
outside.
Transistor output: 30 VDC max., 50 mA max.
Residual voltage when the function is ON: 2 V max., leakage current
when the function is OFF: 0.1 mA max.
Detection voltage: approximately 80% of the output voltage setting
value
When trouble is detected, the transistor output is turned OFF
(nonconductive pins 11-12 on CN) and the LED (red) lights up.
S8JX
CN ALMC
ALME
Vce max : DC30V
Ic max : 50mA
Note: 1. The alarm detection function monitors the voltage at the
Power Supply output end. To check an accurate voltage,
measure a voltage at the load end.
2. Remove the standard supplied connector and prepare a
connector separately.
Overload Protection
The Power Supply is provided with an overload protection function
that protects the power supply from possible damage by overcurrent.
When the output current rises above 105% to 160% min. of the rated
current, the protection function is triggered, decreasing the output
voltage. When the output current falls within the rated range, the
overload protection function is automatically cleared.
Note: 1. When a load is connected that has a built-in DC-DC
converter, the overload protection may operate at startup
and the power supply may not start.
2. Internal parts may occasionally deteriorate or be damaged
if a short-circuited or overcurrent state continues during
operation.
3. 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.
(Reference value)
50-W Models
Level
Output voltage
Built-in fan
Short or L (0-0.8 V)
ON
Rotation
Open or H (2.4-12 V)
OFF
Stop
Max. applied voltage: 12 V max., Counter voltage: -1 V max.,
Sink current: 3.5 mA
Note: 1. If counter voltage is applied to remote control terminals,
output voltage cannot be turned ON/OFF.
Please remember this when wiring.
2. Use a twist wire or a two-core shield wire for connection line.
3. Remote control circuit is disconnected from input and output
circuits.
4. Remove a connector provided as standard and prepare a
harness separately.
Intermittent operation
0
50
100
Load rate (%)
100-/150-W Models
300-/600-W Models
0
50
100
Load rate (%)
Intermittent operation
0
50
100
Load rate (%)
44