HANYOUNGNUX LF4N Instruction Manual Download Page 1

LCD Timer

LF4N

Thank you for purchasing Hanyoung Nux products. Please read the instruction 

manual carefully before using this product, and use the product correctly. 

Also, please keep this instruction manual where you can view it any time.  

MD0305KE190430

INSTRUCTION MANUAL

Safety information

   

DANGER

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury

   

WARNING

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury

   

CAUTION

Indicates a potentially hazardous situation which, if not avoided, may result in minor injury or property damage

Please read the safety information carefully before the use, and use the product correctly.

The alerts declared in the manual are classified into 

Danger, Warning

 and 

Caution

 according to their importance

• The input/output terminals are subject to electric shock

   risk. Never let the input/output  terminals come in contact

   with  your body  or conductive substances.

DANGER

• Please make sure that the product specifications are the 

  same as you ordered. 

• Please use the product in places where corrosive gases

  (especially harmful gases, ammonia, etc.) and flammable 

   gases are not generated.

• Please use the product in places without liquids, oils, 

  chemicals, steam, dust, salt, iron, etc. (pollution degree 1 or 2).

• Please avoid places where large inductive interference, 

  static electricity,magnetic noise are generated.

• Please avoid places with heat accumulation caused by 

   direct sunlight, radiant heat, etc.

• When water enters, short circuit or fire may occur, so please 

  inspect the product carefully.

• Do not connect anything to the unused terminals.

• For DC types, please wire correctly, after checking the polarity 

  of the terminals.  

• After checking polarity of terminal, connect wires to the right 

  position.

• When this product is connected to a panel, use a circuit 

  breaker or switch approved by IEC947-1 or IEC947-3.

• Install the circuit breaker or switch at near place for 

  convenient use.

• Write down on a label that the operation of circuit breaker or 

  switch disconnects the power since the devise is installed.

• For the continuous and safe use of this product, the periodic 

  maintenance is recommended.

• Some parts of this product have limited life span, and others 

  are changed by their usage.

• The warranty period of this product including parts is one year 

  if this product is properly used.

• When power is on, the preparation period of contact output 

  is required. In case of using signals of external interlock circuit, 

  use a delay Relay.

• Please read the safety information carefully before the use, 

   and use the product correctly.

•  If there is a possibility that a malfunction or abnormality  of 

    this product may lead to a serious accident, install an 

    appropriate protection circuit on the outside and plan to 

    prevent accidents. 

•  Please supply the rated power voltage, in order to prevent 

    product breakdowns or malfunctions. 

• To prevent electric shocks and malfunctions, do not supply 

   power until the wiring is completed.

• Please disassemble the product after turning OFF the power. 

• Any use of the product other than those specified by the

  manufacturer may result in personal injury or property 

  damage.

• Please use this product after installing it to a panel, 

   because there is a risk of electric shock. 

WARNING

CAUTION

▍Initial mode

LF4N-A, LF4N-D

LF4N-B, LF4N-C

UP/ DOWN

Up Mode

Up Mode

Operation mode

SIGNAL ON DELAY 

Output 

( A MODE)

POWER ON DELAY 

Output 

( A MODE Fix)

Time range

1s ~ 999s

1s ~ 999s

Model

Code

Content

LF4N-

LCD Timer

Options

A

Time limit 1c

START, RESET, INHIBIT

8 Pin socket

B

Time limit 1c, Instantaneous 1c

POWER ON START

C

Time limit 2c

D

Time limit 1c

START, RESET, INHIBIT

11 Pin socket

Model

LF4N-A

LF4N-D

LF4N-B

LF4N-C

Power voltage

24 - 240 VDC / AC 50-60 Hz

Display

LCD display (character height : 8㎜)

Voltage regulation

±10 % of power voltage

Power consumption

1.5 W (240 VDC),  2.5 VA (240 VAC 60 Hz)

 2.1 W (240 VDC),  2.9 VA (240 VAC 60 Hz)

Resetting time

Max. 0.1 sec

Minimum 

Signal Time

START, RESET, 

INHIBIT

 Min. 20 ㎳

-

Input Type Non voltage input

Impedance in a short circuit : Max. 1 ㏀

-

Residual voltage in a short circuit : Max. 0.7 V

Impedance in open : Min. 100 ㏀

Time error

Repeated error

In case of Power-on Start

(Max. ±0.01 % ±0.05 % sec)

In case of Signal-on Start

(Max. ±0.005 % ±0.03 % sec)

In case of Power-on Start

(Max. ±0.01 % ±0.05 % sec)

Set error

Voltage error

Temperature error

Control 

output

Contact type

Time limit SPDT (1c)

Time limit SPDT(1c), 

Instantaneous SPDT(1c) Time limit SPDT (2c)

Contact capacity

NO Contact: 250 VAC 5A resistive load, NC Contact: 250 VAC 2A resistive load. 

Insulation resistance

Min. 100 ㏁ (500 VDC Mega base on, Between current-carrying terminal and exposed 

non-current carrying metal parts) 

Dielectric strength 

Dielectric strength 2000 VAC 50 / 60 Hz for 1 min (Between current-carrying terminal and 

exposed non-current carrying metal parts)

Noise immunity

Square wave noise due to the noise simulator (Pulse gap = 1μs), 

±2 kV(within each operating power terminal)

Vibration Vibration resistance

10 - 55 ㎐ (For 1min) double amplitude 0.75 ㎜ X, Y, Z each direction 1hour Malfunction

Malfunction

10 - 55 ㎐ (For 1 min) double amplitude 0.5 ㎜ X, Y, Z each direction 10 minutes Shock resistance 

Shock

Shock resistance 

300 

㎨, 

3 times  X, Y,  Z each direction

Malfunction

100 

㎨, 

3 times X, Y,  Z each direction

Life

expectancy

Mechanical

Over 1,000 million (Open & Short frequency : 180 / min)

Electrical

Over 10 million (250 V a.c 3 A load Resistance)

Ambient temperature

-10 ~ 55 ℃ (No condensation)

Storage temperature

-20 ~ 65 ℃ (No condensation)

Ambient humidity

35 ~ 85 %R.H.

Weight(g)

80

86

82

▍Suffix code

▍Specification

※ t : Set time, t - a : Within set time

48.0

60.2

15.3

45.0

60.0 

»

45 

+0.6

-0

45 

+0.6

-0

60.0 

»

6.0

48.0

▍Part names and functions

▍Connection diagrams

● Front panel

48.0

60.2

15.3

45.0

60.0 

»

45 

+0.6

-0

45 

+0.6

-0

60.0 

»

6.0

48.0

Time process status

Inhibit status

Reset status

Output-on status

Elapsed time

h - hour

m - minute

s - second

Elapsed time 

with Bar graph

Selection of Time range

Selection of operation mode

Time setting (001 ~ 999) 

● Selection of operation mode

• To select operation mode, please push dip switch in the left 

  side of front panel.

• LF4N has 10 kinds of operation modes and selected mode is 

  displayed in front of panel as like A, B, C, D, E, F, G, H, I, J.

Display window of

operation mode

Mode

Function of operation

A

SIGNAL ON- DELAY

B

FLICKER ON START

C

SIGNAL ON/OFF DELAY

D

SIGNAL OFF DELAY

E

INTERVAL

F

ONE SHOT & FLICKER

G

INTEGRATION

H

INTERVAL DELAY

I

FLICKER ONE-SHOT

J

POWER ON-START

● Time setup

48.0

60.2

15.3

45.0

60.0 

»

45 

+0.6

-0

45 

+0.6

-0

60.0 

»

6.0

48.0

Dip switches for time 

setup (001 ~ 009)

After 99.9 seconds

● Selection of time unit

• To select time unit, please push dip switch in the right side  

   of front panel.

• LF4N has 10 kinds of time units and selected time unit is 

   displayed in front of panel as like 0.01s, 0.1s, s, 0.1m, m, 

   0.1h, h, 10 h, S, M.

48.0

60.2

15.3

45.0

60.0 

»

45 

+0.6

-0

45 

+0.6

-0

60.0 

»

6.0

48.0

Display window 

for the time unit

Time unit

Time range

.01 s

0.01 s ~ 9.99 s

0.1 s

0.1 s ~ 99.9 s

s

1 s ~ 999 s

0.1 m

0.1 m ~ 99.9 m

m

1 m ~ 999 m

0.1 h

0.1 h ~ 99.9 h

h

1 h ~ 999 h

10 h

10 h ~ 9990 h

S

0 m 01 s ~ 9 m 59 s

M

0 h 01 m ~ 9 h 59 m

▍UP/DOWN mode

According to Up/Down mode, output operates with Up 

mode or Down mode.

① Open case.

② Select Up / Down mode by jumper switch.

UP mode(Initial mode)

DOWN mode

▍Operation mode

A mode : SIGNAL ON-DELAY

B mode : FLICKER ON START

E mode : INTERVAL MODE

F mode : ONE-SHOT & FLICKER

G mode : INTEGRATION

H mode : INTERVAL DELAY

.

I mode : FLICKER-ONE SHOT

J mode : POWER ON START

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

Power

Start

Reset

Time limit contact NO

Process time (UP)

Process time (DOWN)

Output display 

② LF4N-B (Time limit 1c, Instantaneous 1c)

③ LF4N-C (Time limit 2c)

① LF4N-A, LF4N-D (Time limit 1c)

※ t : Set time, Rt : Resetting time (Over 100 ms)

Power

Time limit contact NC

Time limit contact NO

Instantaneous Contact NC

Instantaneous Contact NO

Power

Time limit contact NC

Time limit contact NO

▍Dimensions

[Unit : mm]

48.0

60.2

15.3

45.0

More than 60

45

 

+0.6

-0

45 

+0.6

-0

Mor

e than 60

6.0

48.0

48.0

60.2

15.3

45.0

More than 60

45

 

+0.6

-0

45 

+0.6

-0

Mor

e than 60

6.0

48.0

48.0

60.2

15.3

45.0

More than 60

45

 

+0.6

-0

45 

+0.6

-0

Mor

e than 60

6.0

48.0

▍Case open

Please turn off power when you open case.

① Please widen the lock of product with 

    driver or tweezers

② Push it toward the front panel

A mode : POWER ON DELAY

A mode : POWER ON DELAY

■ LF4N-A

■ LF4N-B

■ LF4N-C

■ LF4N-D

FRONT

FRONT

BACK

BACK

FRONT

FRONT

BACK

BACK

• When the INHIBIT signal is applied, the time process is stopped (Hold). 

• When the RESET signal is applied, the display value and output are initialized. 

C mode : SIGNAL ON/OFF DELAY

D mode : SIGNAL OFF DELAY

28, Gilpa-ro 71beon-gil,  Michuhol-gu, 

Incheon, Korea TEL : +82-32-876-4697 

http://www.hynux.com

HANYOUNGNUX CO.,LTD

Jl. Jangari RT.003/002 Hegarmanah Sukaluyu 

Cianjur Jawa Barat Indonesia 43284

TEL : +62-21-5060-7210

PT. HANYOUNG ELECTRONIC INDONESIA

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