S8VS-03024 Datasheet, PDF (34/38 Pages) Omron Electronics LLC – Switch Mode Power Supply

S8VS
Output Voltage Adjuster (V.ADJ)
• The output voltage adjuster (V.ADJ) may possibly be damaged if it
is turned with unnecessary force. Do not turn the adjuster with
excessive force.
• After completing output voltage adjustment, be sure that the output
capacity or output current does not exceed the rated output
capacity or rated output current.
15-W, 30-W Models
• If the output voltage is set to a value less than −10%, the
undervoltage alarm function may operate.
60-W, 90-W, 120-W, 180-W, 240-W, and 480-W Models
• If the detection voltage of the undervoltage alarm function is at the
factory setting and the output voltage is set to a value of 20 V or
less, the undervoltage alarm function may operate.
DIN Rail Mounting
To mount the Block on a DIN Rail, hook portion (A) of the Block onto
the rail and press the Block in direction (B).
(A)
(B)
To dismount the Block, pull down portion (C) with a flat-blade
screwdriver and pull out the Block.
30 mm min.
(C)
Track stopper
Series Operation
(24-V Model)
Two power supplies can be connected in series.
Correct
AC (L)
+V
AC (N)
−V
AC (L)
+V
AC (N)
−V
Note: 1. The diode is connected as shown in the figure. If the load is
short-circuited, a reverse voltage will be generated inside
the Power Supply. If this occurs the Power Supply may
possibly deteriorate or be damaged. Always connect a
diode as shown in the figure.
Select a diode having the following ratings.
Type
Schottky Barrier diode
Dielectric strength (VRRM) Twice the rated output voltage or above
Forward current (IF)
Twice the rated output current or above
2. Although Products having different specifications can be
connected in series, the current flowing through the load
must not exceed the smaller rated output current.
3. Serial operation is not possible with 5-V and 12-V models.
Making Positive/Negative Outputs
• The outputs are floating outputs (i.e., the primary circuits and
secondary circuits are separated). You can therefore make
positive and negative outputs by using two Power Supplies.
You can make positive and negative outputs with any of the
models.
If positive and negative outputs are used, connect Power Supplies
of the same model as in the following figure. (Combinations with
different output capacities or output voltages can be made.
34
However, use the lower of the two maximum rated output currents
as the current to the loads.)
+V
+V
INPUT
−V
0V
+V
INPUT
−V
−V
• Depending on the model, internal circuits may be damaged due to
startup failure when the power is turned ON if loads such as a
servomotor or operational amplifier may operate in series.
Therefore, connect bypass diodes (D1, D2) as shown in the
following figure.
If the list of models that support series connection of outputs says
that an external diode is not required, an external diode is also not
required for positive/negative outputs.
+V
INPUT
D1
−V
+V
INPUT
D2
−V
• Use the following information as a guide to the diode type, dialectic
strength, and current.
• Type: Schottky barrier diode
• Dielectric strength (VRRM): Twice the rated Power Supply output
voltage or higher
• Forward current (IF): Twice the rated Power Supply output
current or higher
Parallel Operation
The Product is not designed for parallel operation.
Incorrect
AC (L)
+V
AC (N)
−V
AC (L)
+V
AC (N)
−V
Backup Operation
• Backup operation can be performed. Backup operation provides
protection by using an extra Power Supply even if the output
current is sufficient with one Power Supply. If one of the Power
Supplies fails, the second Power Supply still provides sufficient
power.
A
D1
+V
−V
B
D2
+V
−V
Use the same model for Power Supplies A and B.
• Use a load capacity that can be supplied by either Power Supply A
or Power Supply B alone.
• If backup operation is used, be sure to connect a diode to both
Power Supply A and Power Supply B as shown in the above figure
so that the backup Power Supply is not affected by a failed Power
Supply.
Use the following information as a guide to the diode type, dialectic
strength, and current.