Omron S82J - Page 22

S82J
S82J
22
Generating Output Voltage (±)
An output of ± can be generated by using two Power Supplies as
shown below, because the Power Supply produces a floating out-
put.
INPUT
INPUT
+V
–V
+V
–V
Load
Load
+V
0 V
–V
If operation amplifiers as loads are connected in series, connect a
diode between the positive and negative output terminals of each
Switching
Power Supplies as shown in the illustration below . With -
out these diodes, the Power Supplies may not start when power is
turned on, possibly damaging internal circuits over a period of time.
Use Schottky barrier diodes with a low forward voltage (V
F
). Other
types of diodes will not be ef fective.
Guidelines for the dielectric strength and current of the diodes are
as follows:
Dielectric strength: At least twice the rated output voltage of the
Power
Supply
Forward current: At least twice the rated output current
No diodes are required for models that allow series operation.
INPUT
+ V
– V
+ V
– V
INPUT
D
1
D
2
Load
Load
Load
Series Operation
Only models with power ratings of 50 (24 V)/100/150/300/600 W al -
low
series operation.
As shown in the following diagram, the output voltage from each
Switching
Power Supply can be added.
INPUT
+V
–V
+V
–V
INPUT
Load
D
1
D
2
With the S82J-05024j or S82J-10024j, if the load is shorted a
reverse
voltage may result in the Power Supply causing deteriora -
tion
and damage. It is recommended that diodes are connected as
shown in the previous diagram (D
1
, D
2
).
Parallel Operation
Only 300- and 600-W models can be in parallel operation. Do not
operate any other models in parallel. The output of the models in
parallel
operation is a maximum of 80% of the rated output.
Set the parallel operation selector to P ARALLEL if the Units are in
parallel operation and make sure that the thickness and the length
of all wires connected to the load are the same to ensure that the
wires
will have no voltage drop dif ferences.
Fan Replacement
The service life of the fan is approximately 50,000 hours (at 25 °C).
The
service life varies, however , depending on the ambient temper -
ature
or other surrounding environmental conditions such as dust.
As a preventive maintenance measure, replace the fan within two
years
if it is used at an ambient temperature of 40 °C.
Fans are available as replacements.
Model: S82Y -JFAN
Fan Set:
Fan (above), four M4 x 35 sems screws, instruction sheet, and
packing case
Replace the fan as shown in the following illustration.