Noise filter
Fuse
*
GR
FG
AC (L)
AC (N)
Input
100/200 V
Inrush current
prevention
Rectifier Rectifier
Drive
Detection
Overvoltage
detection
Low-voltage
detection
Fan alarm circuit
Remote control
circuit
Control circuit
Overload
detection
Auxiliary
power
circuit
+ V
– V
+ S
– S
CB
FAN ALM
+ RC
– RC
FAN ALM
DC Output
Remote sensing
Current balance
Fan alarm
Remote control
* Fuse capacity:
Short bar
300 W: 8 A
600 W: 15 A
J BLOCK DIAGRAM
6
Switching Power Supply S82D
O
eration
J REMOTE SENSING FUNCTION
This function corrects a voltage drop in the load wiring. When
using the remote sensing function, remove the short bars from
the remote sensing terminals as shown in the following diagram.
Remote sensing connection
(2-wire shielded cable)
Load
Load wiring
Remove the
short bar
Note: 1. When the voltage drop in the load wiring is large, the
overvoltage protection function might engage just from
the increase in voltage to correct the voltage drop, so
be sure to use high capacity wiring.
2. If the +S and +V terminals are left unconnected, the
high voltage protection function will engage and the
output voltage will be cut off. If the -S and -V terminals
are left unconnected, the output voltage will increase
about 5%.
J REMOTE CONTROL FUNCTION
This function allows the output voltage to be turned on and off
with an external signal (as long as the input voltage is being
applied). When using the remote control function, remove the
short bar from the remote control terminals and connect a switch
or transistor as shown in the diagram below. The remote control
circuit is insulated from input, output, and GR.
Remove the
short bar
Tr
*
*
Use a transistor with V
CE
> 20 V and I
c
> 5 mA.
Voltage level Output voltage
Low: (0.8 V max.) ON
High: (2 V min.) OFF
J FAN ALARM
When the speed of the internal fan drops, the fan alarm output
(SPST-NO) will turn ON (shorted).
Normal condition
Alarm condition
