Daitron HFS150 Series Instruction Manual - Page 2

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2．Function explanation

2-1

Input voltage

・ Input voltage range is single phase alternating

current. 85～264Vac(47～63Hz).

・ We recommend that you do not use this power

supply unit outside of it's normal intended use in

order to avoid any damage or malfunctions.

2-2

Output voltage setting

・ You can adjust +Vout by using Output Voltage

Adjustment Potentiometer that is next to the

connector (CN501).

・ You can increase output voltage by turning clockwise.

If you need decrease, you can turn it the other way.

・ Please use it within the following range when you

adjust the output voltage.

・Within +/- 10% lated output voltage.

・Do not use maximum output power.

・ Do not exceed rated output current.

2-3

Inrush Current

・ The inrush current limiting circuit is built-in

・ The inrush current limiting circuit is built-in.

・ The inrush current limiting circuit might released it

when the input re-turning on time is short, because

SCR is used for the inrush current limiting. So turn it

on again enough after time.

・ The first inrush current and the second inrush

current flow because it adopts SCR method for the

inrush current limiting circuit.

2-4

Over-current Protection(OCP)

・ The over-current protection works and the output is

intercepted when becoming 110% or more of the

output current ratings.

・ Remove the factor of the overload, and turn on the

input again after a few minutes of cutting when

resetting it.

・ Please avoid operation in the over-current state

for 10 seconds or more.

It will cause damage or isolation failure.

2-5

Over-Voltage Protection(OVP)

・ It is detected when the output voltage rises by some

causes, and the output is intercepted at once.

・ When it works once, the over-voltage protection

continues the output interception while the input is

supplied.

・ Turn it on again after a few minutes after intercepting

the input when resetting it.

・ Note that the output voltage might be abnormal when

you turn it on again. (In this case, the over voltage

protection works again. )

2-6

Remote On/Off circuit

・ The remote control function is built-in.

・ You can control the output in On/Off by applying

the voltage.

・ You can control it by applying the external voltage

to the RC Connector, which is secondary circuit of

power supply. It can't be used in primary side circuit.

Connector(CN501)

1kΩ

⑦ +R

⑧ -R

Power Supply

Voltage level -Pin #7 & #8.

SW OFF

Less than 0.8V, or Open

SW ON

4.5V～12.5V

Please connect external resistor R when using

6.5V or more in an impressed voltage.

External Voltage level:E

4.5～12.5VDC

12.5V～24.5VDC

E－(1.1＋1000×0.005）

R Ω ＝

2-7

Remote Sensing

・ The remote sensing function is built-in.

・ Line drop between the top (the load device side)

and power supply terminal of the sensing line use it

by 0.3V or less. Please note that power supply

terminal voltage does not become out of a rating

range.

・ The sensing wire is done in the twist. And it uses it

along the load wire.

Power Supply

Load wire

Switch

（SW501）

Connector

③ -S

（CN501）

① +S

・ Please confirm that the switch is "0", in the case

that it does not use remote sensing.

When the factory is shipped, the switch is "0", and

the power supply can be used as it is when the

remote sensing is not used.

OFF

Output

OFF

External Resistor:R

No Required

* Refer to the following

0.005

Load