S8FS-G15024CD-R datasheet(31/34 Pages) OMRON

31 / 34 page

S8FS-G

Overcurrent Protection

• Internal parts may possibly deteriorate or be damaged if a short-

circuited, 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.

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.

Series Operation

Two Power Supplies can be connected in series operation.

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.

2. Although Power Supply having different specifications can

be connected in series, the current flowing through

connected in series, the current flowing through the load

must not exceed the smaller rated output current.

• The outputs are floating outputs (i.e., the primary circuits and

secondary circuits are separated). You can therefore make

positive/negative outputs by using two Power Supplies. You can

make positive/negative outputs with any of the models. If you use

positive/negative outputs, connect two Power Supplies of the same

model as shown below. You can combine models with different

output capacities and output voltages. However, use the lower of

the two rated rated output currents as the current to the loads.

• 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.

• Use the following information as a guide to the diode type, dialectic

strength, and current.

Parallel Operation

Parallel operation is used when the output current from one Power

Supply is insufficient for the load. Power Supplies are connected in

parallel to increase the output current.

Parallel operation is not possible.

Up to five Power Supplies can be connected in parallel operation.

You must meet the following conditions to use parallel operation.

• The internal parts may occasionally deteriorate or be damaged. To

operate in parallel, set the switch to the "PARALLEL" side.

• For parallel operation, always use Power Supplies with the same

model number.

• Use the output voltage adjusters (V. ADJ) to adjust the difference

in the output voltages to 50 mV or less between Power Supplies

that are used in parallel operation.

• The length and thickness of each wire connected to the load must

be the same so that there is no difference in the voltage drop value

between the load and the output terminals of each Power Supply.

• Drastic fluctuations in the load (including fluctuations that occur

when starting and starting the load) may reduce the output voltage.

If fluctuations in the output voltage that result from drastic

fluctuations in the load would be a problem, connect external

diodes as shown in the following diagram.

• Use the following information as a guide to the diode type, dialectic

strength, and current.

Type

Schottky Barrier diode

Dielectric strength (VRRM) Twice the output voltage or above

Forward current (IF)

Twice the rated output current or above

INPUT

-V

INPUT

-V

INPUT

-V

Type

Schottky Barrier diode

Dielectric strength (VRRM) Twice the output voltage or above

Forward current (IF)

Twice the rated output current or above

Power Supplies without the Parallel Operation Option

S8FS-G60024

@-W@

(Models with the Parallel Operation Option)

Type

Schottky Barrier diode

Dielectric strength (VRRM) Twice the output voltage or above

Forward current (IF)

Twice the rated output current or above

-V

INPUT

S8FS-G

-V

INPUT

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