Technical \Specification

&
Operation Manual

SFL2 & RTIL

Sequence Flashing Light
&
Runway End Identification Light

Specification & Operation Manual

SFL & RTIL

Contents
1. System General
2. System Description
3. System Composition
4. System Function Description
5. Composition of Communication
6. System Problem and Solution

YOUYANG

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

>> PRECAUTION <<

Even though the power switch is placed at off position, the remaining of voltages in this control
circuit may cause the fatal damage for human body.
Therefore must do work after cutting off the power at a full discharge state. (on earth)

1. System general
SFL(Sequence Flashing Light) consists of main transformer, flash head(flashing light),
junction box, master timer unit and power supply unit installed on the approach area in
order to inform the landing air-craft of landing direction. According to the regulation of
FAA CAT-I, FAA CAT-II, and ICAO this system is manufactured.

2. System Description
2-1 SFL composition diagram
SFL(Sequence Flashing Light) consists of main transformer, flash head(flashing light),
junction box, master timer unit and power supply unit.

2-2 MSASTER TIMER

SFL system Control, observation, monitoring and communication power supply are
operated in master timer.
Mater timer consists of power supply part, CPU & setting part, Drive part and Elapsed
time meter.

YOUYANG

Value Creating Partner

Specification & Operation Manual

MASTER TIMER

POWER

CONTROL
POSITION

POWER

INTENSITY
CONTROL

LOCAL

LOW

REMOTE

MEDIUM

SERIAL

HIGH

RTIL
CONTROL

MODE
SELECTION

RTIL ON

SFL 30

B2

RTIL
FAULT

RTIL

30

SEC

2
SFL
ALARM

5
21

LAMP
TEST
1

SFL
ALARM

ON
OFF

LAMP TEST
& SETTING

ON

SFL 5

B3

MODE SW.

ELAPSED TIME METER

DRIVER

SFL
MONITORING

SFL 21

B1

SFL & RTIL

SFL
WARNING

SFL
WARNING

LAMP STATUS
31
1

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
32
RESET

RESET

2-2-1 Power supply part

Picture 4-2

Power supply part supplies DC power for master timer. C(communication), R(Remote) or
L(Local) is selected as Control Position by mode switch. In case of Local, 0(OFF), B1(LOW
intensity), B2(MEDIUM intensity) or B3(HIGH intensity) can be selected by mode switch.

2-2-1-1 LOCAL
Intensity is changed according to input of mode switch - 0(OFF), B1(LOW),
B2(MEDIUM) or B3(HIGH)

YOUYANG

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

1) 0 : OFF status
Control position -> Local LED ON / Remote LED OFF/Serial LED OFF
Intensity Control-> All LED OFF
2) B1 : Intensity step becomes LOW status
Recharging one condenser
Control position -> Local LED ON /Remote LED OFF/Serial LED OFF
Intensity Control-> LOW LED ON/OFF(flickering)
MIDIUM LED OFF/HIGH LED OFF
3) B2 : Intensity step becomes MEDIUM status
Recharging two condensers
Control position -> Local LED ON /Remote LED OFF/Serial LED OFF
Intensity Control-> LOW LED OFF
MIDIUM LED OFF/ON (flickering)
HIGH LED OFF

4) B2 : Intensity step becomes HIGH status

Recharging three condensers
Control position -> Local LED ON /Remote LED OFF/Serial LED OFF
Intensity Control-> LOW LED OFF
MIDIUM LED OFF
HIGH LED ON/OFF (flickering)

2-2-1-2 REMOTE
When R is selected by mode switch, mode is changed to Remote.
Signal of Remote control uses AC120V. In this case, master timer is operated
according to received signal of ON/OFF of SFL & RTIL(REIL) or intensity step from
Control tower or remote distance.
Intensity is changed as 0(OFF), B1(LOW), B2(MEDIUM) or B3(HIGH)

YOUYANG

Value Creating Partner

Specification & Operation Manual

1)

SFL & RTIL

R- 0 : OFF status
In this case, setting of master timer can be changed by remote input.
Control position -> Remote LED ON/Local LED OFF /Serial LED OFF
Intensity Control-> All LED OFF

2)

R-B1 : Intensity step becomes LOW status.

On selecting both of R on mode switch and BI on remote operation
switch.
Recharging one condenser
Control position -> Remote LED ON /Local LED OFF /Serial LED OFF
Intensity Control-> LOW LED ON/OFF(flickering)
MIDIUM LED OFF/HIGH LED OFF

3)

R-B2 : Intensity step becomes MEDIUM status

On selecting both of R on mode switch and B2 on remote operation
switch.
Recharging two condensers
Control position -> Remote LED ON /Local LED OFF /Serial LED OFF
Intensity Control-> LOW LED OFF
MIDIUM LED OFF/ON (flickering)
HIGH LED OFF

4)

R-B3 : Intensity step becomes HIGH status

On selecting both of R on mode switch and B3 on remote operation
switch.
Recharging three condensers
Control position -> Remote LED ON /Local LED OFF /Serial LED OFF
Intensity Control-> LOW LED OFF
MIDIUM LED OFF
HIGH LED ON/OFF (flickering)

YOUYANG

Value Creating Partner

Specification & Operation Manual

5)

SFL & RTIL

SFL 0N/0FF
On Remote mode, working of power supply unit which is set in Mode selection is
determined.

6)

RTIL ON/OFF
On Remote mode, working of RTIL(REIL) which is set in RTIL control is

determined.

2-2-1-3 Serial
When S is selected by mode switch, mode is changed to Serial. In this case,
master timer is operated according to received signal of ON/OFF of SFL &
RTIL(REIL) or intensity step from computer of Control tower. Communication of
Mater timer uses RS-485 communication and converter of computer on control
tower changes RS-485 to RS-232.
Intensity is changed as 0(OFF), B1(LOW), B2(MEDIUM) or B3(HIGH)

1) S- 0 : OFF status
In this case, setting of master timer can be changed by computer RS485
communication input.
Control position ->Serial LED ON/ Remote LED OFF /Local LED OFF
Intensity Control-> All LED OFF
2) S-B1 : Intensity step becomes LOW status
On selecting both of C on mode switch and receiving LOW data
Recharging one condenser
Control position -> Serial LED ON/ Remote LED OFF /Local LED OFF
Intensity Control-> LOW LED ON/OFF(flickering)
MIDIUM LED OFF/HIGH LED OFF
3) S-B2 : Intensity step becomes Medium status

YOUYANG

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

On selecting both of C on mode switch and receiving Medium data

Recharging two condensers
Control position -> Serial LED ON/ Remote LED OFF /Local LED OFF
Intensity Control-> LOW LED OFF
MIDIUM LED OFF/ON (flickering)
HIGH LED OFF
4) S-B3 : Intensity step becomes High status
On selecting both of C on mode switch and receiving High data
Recharging three condensers
Control position -> Serial LED ON/ Remote LED OFF /Local LED OFF
Intensity Control-> LOW LED OFF
MIDIUM LED OFF
HIGH LED ON/OFF (flickering)

-. Reception status information on communication of SFL system

Start signal of
communication

SFL/RTIL ON/OFF

Intensity

00

01

0F

02

F0

03

FF

04

02

1 FRAME

02

- > Start signal of communication

2 FRAME

00

- > 0 - SFL OFF, 0 - RTIL OFF

Detection signal of
error

CHK_SUM

0F - > 0 - SFL OFF, F - RTIL ON

3 FRAME

4 FRAME

YOUYANG

F0

- > 0 - SFL ON , F - RTIL OFF

FF

- > F - SFL ON, F - RTIL ON

01 - > No intensity

02

- > Low Intensity

03

- > Medium Intensity

04

- > High Intensity

CHK _ SUM

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

- Transmission status information on communication of SFL system

1-8

9 - 16

17 - 24

25 - 32

Status

Status

Status

Status

SFL

02 information information information information

start of lamp of of lamp of
power

of lamp of

of lamp of

power

power

supply unit

supply unit

power

supply unit supply unit

SFL

Operation STATUS
information

BIT

CHK _
SUM

4-2

1 FRAME

02

- > Start signal of communication

2 FRAME

00

- > SFL ON

FF - > SFL OFF

3 FRAME

LAMP 0

4 FRAME

LAMP 1

5 FRAME

LAMP 2

6 FRAME

LAMP 3

7 FRAME

SFL Operation information

8 FRAME

9 FRAME

SFL STATUS BIT

:

CHK _ SUM

-.SFL informaton
0

L/M/H

RTIL ON

SEC

Number of fault one

L / M / H : step of intensity
RTIL ON : Yes/No of RTIL setting
SEC

: number of flashing per second

-.SFL STATUS BIT

0

SFL

RTIL

ON/OFF FAULT

YOUYANG

ALARM

WARNING

5
C / R /L

5 / 21 / 30

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

SFL ON/OFF : Yes/No of SFLworking

RTIL FAULT : Information of RTIL FAULT
ALARM

: Yes/No of number of fault lamp which is set for Alarm.

WARNING

: Yes/No of number of fault lamp which is set for Warning.

C/R/L

: Operation mode of SFL

5 / 21 / 30

: Information of SFL formation (number of SFL).

2-2-2 CPU & setting part

Setting, Control, observation and monitoring of SFL system is processed by using
microprocessor.
2-2-2-1 CPU part
1) This part receives input from setting part.
To control configuration formation, intensity step, number of flashing per sec
of SFL and working RTIL.
2) To supply, after receipt of lamp fault information of power supply unit, the
information for setting part.
2-2-2-2 Setting part
1) Setting and indication of SFL
2) To all information of setting part board is sent to CPU part and is transmitted to
power supply unit. Information on lamp status of power supply unit is shown
through LED of `Lamp Status`.
3) Showing present SFL operation status

MASTER TIMER
CONTROL
POSITION

INTENSITY
CONTROL

LOCAL

RTIL
CONTROL

MODE
SELECTION

RTIL ON

SFL 30

LOW

SFL
MONITORING

LAMP
TEST

ON

SFL 21
RTIL
FAULT

MEDIUM

REMOTE

SERIAL

HIGH

SEC
SFL
ALARM

SFL 5

30

RTIL

OFF

5
21

2
SFL
ALARM

ON

LAMP TEST
& SETTING

SFL
WARNING

SFL
WARNING

LAMP STATUS
31
1

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
32

RESET

YOUYANG

10

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

Control Position: Showing operation mode through LED

-

LOCAL: ON on Local operation

REMOTE: ON on Remote operation

SERIAL: ON on Serial operation

Intensity Control: Showing intensity step through LED

- LOW / MERIUM / HIGH - flickering

RTIL Control
-

RTIL ON: ON on setting RTIL

RTIL FAULT : LED ON 8 times consecutive defect

RTIL: ON connecting with SFL configuration

OFF not connecting with SFL configuration

Mode Selection: Change of System configuration formation(5/21/30) is fixed by

using BCD switch. The change can be set on Intensity step 0.
-

SFL 30: input of BCD switch 30

SFL 21: input of BCD switch 21

SFL 5: input of BCD switch 5

BCD SWITCH: 0 -> SETTING 0 CONFIGURATION

Except RTIL, All power supply unit is excluded in setting
configuration.
5 -> SETTING 5 CONFIGURATIONS
Except RTIL, Working 1-5 SFL, the rest power supply is
excluded in setting configuration.
21 -> SETTING 21 CONFIGURATIONS
Except RTIL, Working 1-21 SFL, the rest power supply is
excluded in setting configuration.
30 -> SETTING 30 CONFIGURATIONS
Except RTIL, Working 1-30 SFL, the rest power supply is
excluded in setting configuration.

SFL Monitoring: Yes /No of operation status of SFL system

Visual indication of alarm & warning of power supply unit by
LED
-

ON: Yes or No of operation

Flickering ON LED-> showing on communication

SFL ALARM: In case the actual no. of defective power supply unit is more
than fixed No. of power supply unit for alarm, the LED becomes ON.

SFL WARNING: In case the actual no. of defective power supply unit is more
than fixed No. of power supply unit for warning, the LED becomes ON.

YOUYANG

11

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

Lamp Test & Setting

-

SFL ALARM: Fixing Alarm value by BCD switch

SFL WARNING: Fixing Warning value by BCD switch

LAMP TEST: Determining whether whole power supply unit connected withL
system is out of order or not.
Operation on Intensity step: 0
On starting operation, master timer orders high intensity with 2 flashing per
second. After 10 flashing, in case there is some problem, the status is
shown on LED of `Lamp Status` board.

SEC: Setting Number of flashing per sec of SFL and RTIL(REIL).

1 -> 1 flashing per sec
2 -> 2 flashing per sec

Lamp Status
- Showing information from LAMP TEST result
- Indication ON/OFF status of power supply unit which power supply unit
transmits in operating (B1, B2 & B3).

2-2-3 Drive part

1) Transmission of controlled communication signal in CPU part to Power supply
unit
2) Supply of lamp status information, which is sent from power supply unit, to
CPU part

SCR2

Input

SCR1

Control
Information
(SCR)

SCR 1

SCR 2

Output
Power Supply
unit 1

Power Supply
unit 15

Power Supply
unit 32

2-2-4 Elapsed Time meter

Regardless of operation mode, this displays using time of each intensity step after
receipt of intensity information.

YOUYANG

12

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

ELAPSED TIME METER

RESET

H STEP: 0000.00 HOUR

-> HIGH INTENSITY

M STEP: 0000.00 HOUR

-> MEDIUM INTENSITY

L STEP: 0000.00 HOUR

-> LOW INTENSITY

T STEP: 0000.00 HOUR

-> TOTAL INTENSITY

2-2-5 MATER PCB

To connect power supply unit, CPU board and elapsed time meter.

2-2-6 Transformer

2-2-6-1 Transformer for supplying power

This receives AC 110V/220/240V/380V and supplies power with changed AC
voltage, which fits each DC, to power supply part.

YOUYANG

13

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

2-2-6-2 Transformer for power control

1) To supply power for control of SFL
2) Power
AC36V : For communication
AC120V : For REMOTE
AC120V : For detecting lamp fault
AC220V : For driving MC

2- 2-7 FRONT PANEL

This receives whole power of SFL system. Input power is sent to TB1 and the
power becomes on/off by MCCB. Mater timer is protected from input power by
fuse(F1).

YOUYANG

14

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

-. Input power: AC110V, AC220V, AC230V, AC380V

-. Frequency: 50HZ, 60HZ
-. Phase

: Single

-. Designed power: 6KW

-. Output voltage: AC220V, AC380V

2 -2- 8 REAR PANEL1

To input and output signals of POWER SUPPLY and REMOTE, SERIAL .

2-2-8-1. Terminal of REMOTE

On REMOTE operation, this receives signals of intensity step and ON/OFF of
RTIL & SFL.
-. T701 -> COM
-. T702 -> B1
-. T704 -> B2
-. T705 -> B3
-. T706 -> SFL ON
-. T707 -> RTIL ON
-. T703 -> N
2-2-8-2. Terminal of COMMONITOR
-. T301 -> RS422 communication with Computer
-. T302 -> RS422 communication with Computer

YOUYANG

15

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

-. T401 -> communication line of POWER SUPPLY UNIT -1

-. T402 -> communication line of POWER SUPPLY UNIT -2
-. T403 -> line for lamp fault of POWER SUPPLY UNIT -1
-. T404 -> line for lamp fault of POWER SUPPLY UNIT -2
2_2_8_3. Terminal of SFL STATUS
-. T801 -> SFL ON/OFF
-. T802 -> RTIL FAULT
-. T803 -> ALARM
-. T804 -> WARNING
-. T805 -> C / R / L
-. T806 -> C / R / L
-. T807 -> 5 / 21 / 30
-. T808 -> 5 / 21 / 30
-. T809 -> COM
-. T810 -> COM
-. T811 -> Output of control of MC contact
-. T812 -> Output of control of MC contact
2-2-9. REAR PANEL2
1) This controls and outputs secondary power of MAIN TRANSFORMER.
2) To keep safety by using fuse(F2, F3)
3) To connect a grounding by using arrestor.
4) AC220V for heater power
5) AC380V for power supply unit is controlled by MC (on/off)

-. Input power: AC220V, AC380V

-. Frequency: 50HZ, 60HZ
-. Phase: single
-. Designed power: 6KW
-. Output voltage: AC 220V, AC380V

YOUYANG

16

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

2-3 Power Supply Unit

Control board / Power board / Controllers of temperature and humidity /
Heating/TNR board

CONTROL BOARD

TR1

TH1

POWER BOARD

TH2

2_3_1. CONTRIL BOARD

1) To Use communication information of master timer
2) To Determine Yes or No of operation & intensity step
3) To Control Power supply unit

DC 12V
SMPS
DC 5V
SMPS

LAMP
FAULT

TEST

COMMAND OFF

ACTION

POWER

Transmission
Part
Lamp fault
information

Detection
Part
Communication
Signal

Address Input s/w

BCD 1 BCD 2

MICRO PROCESSOR

Power
Control Signal of
Power Supply
TEST

YOUYANG

17

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

2-3-1-1 Input of self address by BCD switch

2-3-1-2 Lamp test
Having no connection with mater timer, when Power Supply Unit check
lamp operation status by turning on TEST switch, Lamp flashes 2 times
per second with high intensity.
2-3-1-3 Self check on operation by master timer
All status of operation which is controlled by master timer is displayed
by LED
Power LED / Working LED / Order OFF LED / Lamp fault LED /
Lamp test LED
2-3-1-4 Detect of defective lamp
To send Defective Lamp information to master timer by using SSR

2-3-2 Power board

1) Recharging condenser by control boards order
2) Discharging recharged voltage through lamp when trigger signal is
inputted.
3) After discharging, sending lamp fault information to control board

DOOR S/W Discharge resistance

DC 500V Recharge resistance

AC 360V

Recharge
signal

12V

12V

Recharge
signal

12V

Trigger
Signal

12V

Recharge
signal

12V

12V

Detection Signal
Defective Lamp

YOUYANG

Prevention Signal
of over recharge

18

perception
signal
of over
recharge

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

2-3-2-1 Power supply of DC500V

This part receive AC 360V and change to DC 500V using hi-voltage diode. This
voltage is used for recharging condenser.

Picture 4-13

2-3-2-2 Recharging condenser

Control board -> recharging signal -> pulse transformer -> SCR working
-> Recharging condenser
2-3-2-3 Discharging lamp
1) When fixed address of control board is same as number of cycle,
discharging signal comes.
2) Discharging signal -> trigger coil -> high voltage pulse more than
10,000 V ->supplying to trigger terminal -> discharging lamp
2-3-2-4 Detect of discharging by checking residual voltage of condenser
2-3-2-5 Prevention of over voltage
To turn off SCR when over voltage more than standard is rescharged.

In case recharge signal

come in, recharge voltage
is not increased.
Standard voltage of
detection of over recharge

recharge voltage of condenser.

Recharge signal

YOUYANG

19

Recharge signal

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

2-3-2-6 Resistance of discharge

For safety, when door is opened, recharged voltage is discharged
within 10 second through resistance of discharge.
2-3-2-7 Resistance of recharge
To insert input resistance in order to control input AC360V.

2-3-4 TNR PCB

To prevent damage of power supply unit by sending external impact noise
to earth.
2-3-5 Controllers of temperature and humidity
2-3-5-1 Controllers of temperature
To prevent wrong working owing to extreme temperature
Temperature controller is adjustable between +15C ~+30C.
2-3-5-2 Controllers of humidity
To prevent wrong working owing to extreme humidity
Humidity controller is adjustable between +30% ~ +80%.
2-3-6 Heater
To receive power from Controllers of temperature and humidity and work.
To work (80W 100W) by AC220V on under setting temperature degree or
over setting humidity degree.

2-4-1 Flash Head

This receives DC500V from power supply unit and when trigger signal comes,
this is discharged through lamp.
* High Intensity
=================================================
Main beam

Intensity

=================================================
Horizontal

30

15,000CD+-50%

Vertical

10

15,000CD +-50%

=================================================
2-1-4-1 Trigger PCB
1) This receives DC 500V from Power board and supplies for lamp.
2) This receives control board signal from Power board and make trigger pulse
through trigger coil. After that, the trigger pulse is supplied for trigger
terminal of lamp.
3) Xenon Lamp / 40J - When the lamp receive trigger signal that discharges.

YOUYANG

20

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

2-4-2 Interlock Switch

When the cover of flash head is opened, power with AC360V, which is supplied to
power supply unit, is stopped by interlock switch for safety of worker.

3. SFL System composition

Various system composition and operation is possible bysetting part of master timer.
3-1 5 configuration
3-1-1 Setting SFL 5 configuration
When switch of `Light Configuration` on Indication board of master timer is in
position 5, 5 configuration is set. The address of each power supply unit should
be fixed in sequence. The LED lamp from 6 to 30 is OFF.
Together with above configuration, RTIL can be set according to customer
requirement.

MASTER TIMER
CONTROL
POSITION

INTENSITY
CONTROL

LOCAL

RTIL
CONTROL

LOW

MODE
SELECTION

RTIL ON

SFL 30

SFL
MONITORING

RTIL
FAULT

MEDIUM

HIGH

SEC
SFL
ALARM

SFL 5

2
SFL
ALARM

ON
SERIAL

LAMP
TEST

ON

SFL 21
REMOTE

LAMP TEST
& SETTING

RTIL

OFF

30

SFL
WARNING

SFL
WARNING

21

LAMP STATUS
31
1

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
32

RESET

SFL WORK
SFL NO WORK

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

32

YOUYANG

21

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

3-1-2 Operation of SFL 5 configuration 3 modes

1) Mode 1: SFL 5 configuration (ON) + RTIL(OFF)
2) Mode 2: SFL 5 configuration (ON) + RTIL(ON)
3) Mode 2: SFL 5 configuration (OFF) + RTIL(ON) SFL switch 0
(SFL switch0)
31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

32

MODE 1

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

32

MODE 2

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

32

MODE 3
: SFL Light on
: SFL Light off
: RTIL Light on
: RTIL Light off
Picture 2-5

YOUYANG

22

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

3-2 21 configuration
3-2-1 Setting SFL 21 configuration
When switch of `Light Configuration` on Indication board of master timer is in
position 21, 21 configuration is set. The address of each power supply unit
should be fixed in sequence. The LED lamp from 22 to 30 is OFF.
Together with above configuration, RTIL can be set according to customer
requirement.

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

21

20

32

3-2-2 Operation of SFL 21 configuration 5 modes

1) Mode 1: SFL 21 configuration (ON) + RTIL(OFF)
2) Mode 2: SFL 21 configuration (ON) + RTIL(ON)
3) Mode 3: SFL 5 configuration (ON) + RTIL(OFF)
4) Mode 4: SFL 5 configuration (ON) + RTIL(ON)
5) Mode 5: SFL 5 configuration (OFF) + RTIL(ON)
(SFL switch0)

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

21

20

19

32

MODE 1

YOUYANG

23

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

21

20

19

32

MODE 2

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

21

20

19

19

32

MODE 3

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

21

20

32

MODE 4

YOUYANG

24

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

31

THRESHOLD

RTIL
SFL

300m

Final 300m of Approach

without Flashlights

21

20

19

32

MODE 5
: SFL Light on
: SFL Light off
: RTIL Light on
: RTIL Light off

3-3 30 configuration

3-3-1 Setting SFL 30 configuration

When switch of `Light Configuration` on Indication board of master timer is in
position 30, 30 configuration is set. The address of each power supply unit
should be fixed in sequence.
Together with above configuration, RTIL can be set according to customer
requirement.

31

THRESHOLD

RTIL
SFL

30

29

32

YOUYANG

25

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

3-3-2 Operation of SFL 30 configuration 7 modes

1) Mode 1: SFL 30 configuration (ON) + RTIL(OFF)
2) Mode 2: SFL 30 configuration (ON) + RTIL(ON)
3) Mode 3: SFL 21 configuration (ON) + RTIL(OFF)
4) Mode 4: SFL 21 configuration (ON) + RTIL(ON)
5) Mode 5: SFL 5 configuration (ON) + RTIL(OFF)
6) Mode 6: SFL 5 configuration (ON) + RTIL(ON)
7) Mode 7: SFL 5 configuration (OFF) + RTIL(ON)
(SFL switch0)
31

THRESHOLD

RTIL
SFL

30

28

29

32

MODE 1

31

THRESHOLD

RTIL
SFL

30

29

28

32

MODE 2

31

THRESHOLD

RTIL
SFL

30

29

21

20

32

MODE 3

YOUYANG

26

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

31

THRESHOLD

RTIL
SFL

30

29

21

20

32

MODE 4

31

THRESHOLD

RTIL
SFL

30

29

21

20

32

MODE 5

31

THRESHOLD

RTIL
SFL

30

29

21

20

32

MODE 6

YOUYANG

27

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

31

THRESHOLD

RTIL
SFL

30

29

21

20

32

MODE 7
: SFL Light on
: SFL Light off
: RTIL Light on
: RTIL Light off

3-4 RTIL(REIL)
3-4-1Setting RTIL(REIL) configuration
When switch of `RTIL Control` on Indication board of master timer is in position
ON,

RTIL(1set 2 EA) works. RTIL is linked with 30th power supply unit and

RTIL ( 31st & 32nd) flash at once on 31st cycle.

THRESHOLD

RTIL

32

Picture 2-4

3-4-1 Operation of RTIL(REIL)

Without any SFL, Only RTIL is operated.

YOUYANG

28

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

31

THRESHOLD

RTIL

32

: REIL Light on
: RTIL Light off

4. System function description

4-1 Control signal
SFL system uses control signal with AC and communicates. The signal is composed of
synchronizing signal, order signal and data signal
Signals is classified according to the number of AC signal by SCR

YOUYANG

29

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

4-1-1 Synchronizing signal

Input Signal

SCR Control
Signal

SCR 1

SCR 2

Output Signal

Synchronizing Signal
Detect Signal Of
Power Suppiy Unit

Above picture shows wave of synchronizing signal. Synchronizing signal makes

communication line about Zero Voltage status by preventing supplying power for
communication line through instant short circuit of AC 36V power.
1) On supplying AC 36V 60Hz period of short circuit: 16.666ms
2) On supplying AC 36V 50Hz period of short circuit: 20ms

4-1-2 Order signal

Input Signal

SCR Control
Signal

SCR 1

SCR 2

SCR 1

SCR 2

Output Signal

Detect Signal Of
Power Suppiy Unit

Communication Signal

Above picture shows wave of order signal. Order signal makes communication
line
about Zero Voltage status by preventing supplying power for communication line
through instant short circuit of AC 36V power.
1) On supplying AC 36V 60Hz period of short circuit: 33.333ms
2) On supplying AC 36V 50Hz period of short circuit: 40ms

YOUYANG

30

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

4-1-3 Data signal

1 Cycle
Data 1
Detect Signal Of
Power Suppiy Unit

2 Cycle
Data 2
Detect Signal Of
Power Suppiy Unit

3 Cycle
Data 3
Detect Signal Of
Power Suppiy Unit

4 Cycle

Data 4
Detect Signal Of
Power Suppiy Unit

Above picture shows wave of data signal. Data signal makes communication line
about Zero Voltage status by preventing supplying power for communication line
through instant short circuit of AC 36V power.
2) On supplying AC 36V 60Hz period of short circuit
-

1 cycle : 16.666ms

2 cycle : 33.333ms

3 cycle : 49.999ms

4 cycle : 66.666ms

3) On supplying AC 36V 50Hz period of short circuit

-

1 cycle : 20ms

2 cycle : 40ms

3 cycle : 60ms

4 cycle: 80ms

4-2 Communication signal

Communication signal is composed of 4 frames (system configuration, flash
intensity, RTIL On/Off and number of flashing per second).

4-2-1 System configuration information transmission

System configuration information is transmitted. One cycle is broken so fixed
configuration becomes 0.

YOUYANG

31

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

Order

Data

Detect Signal Of
Power Suppiy Unit

1) In case of supplying AC 36V 50Hz period of short circuit

-

1 cycle : 20ms -> fixed 0 configuration. SFL 1 ~ 30 OFF

2 cycle : 40ms-> fixed 5 configuration. SFL 6 ~ 30 OFF

3 cycle : 60ms-> fixed 21 configuration. SFL 22 ~ 30 OFF

4 cycle: 80ms-> fixed 30 configuration. SFL 1 ~ 30 ON

4-2-2 RTIL ON/OFF control information transmission

RTIL ON/OFF control information is transmitted. One cycle is broken and RTIL
ON/OFF order is determined according to cycle after transmission of order.

Communication
Signal

Detect Signal Of
Power Suppiy Unit

Communication Signal

Data

1) In case of supplying AC 36V 50Hz period of short circuit

-

1 cycle : 20ms -> RTIL OFF

2 cycle : 40ms-> RTIL ON

4-2-3 Flash intensity transmission

Flash intensity information is transmitted.

Communication
Signal
Communication Signal

Data

Detect Signal Of
Power Suppiy Unit

Above picture shows medium intensity after two cycles are broken.

1) In case of supplying AC 36V 50Hz period of short circuit

-

YOUYANG

1 cycle : 20ms -> transmission of Low intensity information

32

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

2 cycle : 40ms-> transmission of Medium intensity information

3 cycle : 80ms-> transmission of High intensity information

4-2-4 flashing sequence of 1 or 2 per second of SFL & RTIL information transmission
A flashing sequence of 1 or 2 per second of SFL & RTIL information is
transmitted.

Communication
Signal
Communication Signal

Data

Detect Signal Of
Power Suppiy Unit

Above picture shows a flash sequence of 1 per second after one cycle is broken.
A flashing sequence of 1 or 2 per second is determined according to cycle after
transmission of order.

1) In case of supplying AC 36V 50Hz period of short circuit

-

1 cycle : 20ms -> A flashing sequence of 1 per second

1 cycle : 20ms -> A flashing sequence of 2 per second

4-3 Flash Intensity

Indication board of Master time sets flash intensity by mode switch. On each position
of Local , Remote and Communication, setting of flash intensity is possible.

YOUYANG

33

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

LOW -> Discharging lamp by using one condenser in power supply unit

MIDIUM -> Discharging lamp by using two condensers in power supply unit

YOUYANG

34

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

HIGH -> Discharging lamp by using three condensers in power supply unit

4-4 Flash Sequence

SFL + RTIL are operated from 1 to 32 in sequence.

31

THRESHOLD

RTIL
SFL

30

29

28

32

Direction of sequence flashing

(From farthest light from Runway)

Number of flashing: 1 or 2 per second

1 ~ 30 : SFL

31 ~ 32: RTIL

RTIL (2 light) flashes at once.

* Flashing sequence two per second
31 X 20ms+ 20ms(Synchronized signal) + 20ms(Starting signal) = 680ms

YOUYANG

35

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

4-5 RTIL(REIL)
The address of RTIL is 31 & 32. In case one of two RTIL lights is out or order and turns
off, master timer transmits OFF order and makes the other RTIL OFF also.
Two lights of RTIL flash at once but defective information of RTIL- two lights( address
31 & 32) is transmitted respectively.
When a light more than number 8 is detected as ON signal, RTIL transmits OFF signal.
Setting of 1 or 2 flash per second of RTIL & SFL is possible.

Cycle

30

31

32

31.32Simultaneous
Flashing

Flashing Light

Lamp status
Output Of
Information

31

32

4-6 Detection of defective SFL

Power supply unit measures residual voltage of low intensity condenser. In case voltage
more than standard voltage does not remain after trigger signal generates, Power supply
unit determine that discharge by flash tube happened and transmits ON information of
light to master timer.
Master timer shows status of power supply unit by making LED of Lamp Status on
Indication board OFF after receipt of ON information of light. When power supply unit is
out of order, ON signal of light is not detected so OFF of light is shown.

Recharge Voltate Of Condenser

Stundard Voltage
Detected By
Condenser
Detection Of Flashing

YOUYANG

36

Detection Of Flashing

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

4-7 Heating
Power supply unit operate ON/OFF of heating using contact of controllers of
temperature and humidity.
Heating works when temperature is less than setting value by temperature controller
which is adjustable between +15C ~+30C.
Heating works when humidity is more than setting value by humidity controller which
is adjustable between +30% ~ +80%.

5. Composition of Communication
On remote mode, between Control tower and master timer and between Master timer
and power supply, the communication uses AC power so when communication cable is
connected, a worker need to pay attention to polarity.

5.1 Polarity connection of supply power

0V cable should be connected at 0V end and the each power should be divided by
resistive tube on final work.

5.2 Communication cable connection between Master timer and Junction box
1) Connection quantity: Same quantity as number of power supply unit on Parallel
connection
2) Input power 4 cables, communication 2 cables & Lamp fault -2 cables
3) Output (2 parts) Power supply unit and next junction box

YOUYANG

37

Value Creating Partner

Specification & Operation Manual

M A STER TIMER

SFL & RTIL

J UNC TIO N BO X

REA R PA NEL1

REA R PA NEL2

5.3 Connection between Power supply timer and Junction box

1) Pay attention to polarity
2) Two terminal blocks (2P)
Bigger one for power
Small one

- for communication and detection of lamp fault

PO WER SUPPLY UNIT

YOUYANG

J UNC TIO N BO X

38

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

5.3 Connection between Master time and Remote

The connection is done between remote control and master time. The master timer
receive SFL On/Off, intensity and RTIL On/Off communication signal on AC120V

M A STER TIEM R
REMO TE

REA R PA NEL2

6. System problem and solution

6.1 MASTER TIMER
Symptom

Expected cause
MAIN power
Fuse F1, F2, F3

Problem on supplying
power

Transformer for supplying

power
Power supply part
Bad connection of SUB-RACK
Power switch

Solution
Check of Front Panel input
power
Replacement
Replacement
Replacement
Check connection situation

No working on mode

Bad connection between

change and intensity

power supply part and switch

change

DC power

Check DC 12V

Power

Check AC 220V

LED Lamp OFF on Fron

panel

Connection of PCB

No working master timer

Connection of PCB

YOUYANG

39

Check connection situation

Check Assembly and

connection situation
Check Assembly and
connection situation

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

6.2 POWER SUPPLY UNIT

Symptom

Problem

Expected cause

Solution

Power

Check AC 360V

Fuse

Check Fuse

on supplyingINTER-LOCK switch

Replacement

power

Check ouput voltage of T1

Defective T1(Transformer)

(AC9V, AC15V)
Check LAMP FAULT LED of Control part.

Defective lamp
No flashing

Replacement

Bad connection

Check Connector.

Defective trigger COIL

Replacement of PCB(SFL-4089)

Cable between control part and

power supply part
No control.

No
recharging.

Check cable connection.

Replacement

Defective CPU

CPU(SFL-4087

internal

CPU)

Defective recharging resistance

Replacement(R1,R2)

Defective recharging circuit

Replacement of power BOARD(SFL-4088)

6.3 SYTEM connection

Symptom

Expected cause

Solution

Bad connection of communication

cable

Check ACTION LED of control

part
Check communication line
Check

No communication

voltage

of

both

Problem on communication

ends(AC36V)

voltage

Replacement of Drive PCB and

TRANSFORMER of control part.

Opposite connection of

Check `ON` time of ACTION LED

Communication cable
Bad
No detection of lamp
fault

connection

of

Lamp

detection cable

fault

Check connection status,

Check the power (AC120V)

Problem of power

Replacement of Drive PCB and

TRANSFORMER of control part

YOUYANG

40

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

7. Technical Data
System capacity
Supply Voltage: 110V, 220V, 240V
Frequency: 50Hz/60Hz
Output voltage: 220V, 360V
Phase: Single
Operation capacity: 3KW (on 23 lights operation, heater operation)
Designed capacity: 6KW
Power consumption on working high intensity: 45W
Heater: 80W
Operation temperature: 0C ~+55C
Relative humidity: 99% (no condensation)

5-1 MAIN TRANSFORMER

Supply Voltage: 110V, 220V, 240V
Frequency: 50Hz/60Hz
Output voltage: 220V, 360V
Operation temperature: -0C ~+55C
Relative humidity: 99% (no condensation)

5-2 Master timer

Supply Voltage: 110V, 220V, 240V
Frequency: 50Hz/60Hz
Control voltage of Communication: AC36V
Control voltage of Remote: AC120V
Internal used voltage: DC24V, DC+ - 12V, DC5V
Operation temperature: -0C ~+55C
Relative humidity: 99% (no condensation)

5-3 Power supply unit

Supply Voltage: AC220V, AC360V
Internal used voltage: DC12V, DC5V
Control voltage of controllers of temperature and humidity
: AC220V
Supply voltage of heater: AC220V
Power consumption of heating: 80W
5-4 Flash head

YOUYANG

41

Value Creating Partner

Specification & Operation Manual

SFL & RTIL

Input power: DC500V

Trigger voltage: 10,000V
Reflector & body: aluminum

YOUYANG

42

Value Creating Partner