LNTECH S4 SERIES Setup guide

S4 SERIES PHOTOELECTRIC PROTECTOR
INSTALLATION AND USAGE MANUAL
SHANDONG LAIEN OPTIC-ELECTRONIC TECHNOLOGY CO. ,LTD.
Please read this document carefully and thoroughly before installation and operation,
because the correct and optimum use of this product is important for the personal safety.
Please give the user this document with the photoelectric protector if you are an agent, a
dealer or a machine manufacturer which forms a complete set, because this document is
important to guide the user correctly to install and operate.

Prohibitions:
It's prohibited to reproduce and reprint this installation and usage manual of some or
all of the content without permission.
On the content, it will be modied because of the improved device or other reasons in
the future. Please understand without notication in advance.
This manual is made professionally, but there is still something imperfect. If you have
found the unclear place, wrong pages or missing pages, etc, please notify our local
LNTECH ofce of the nearest distributor.
This operating instruction manual is designed to address the technical personnel of the machine
manufacturer or the machine operator in regards to safe mounting, wiring, commissioning,
operation and maintenance of the photoelectric protector.
The photoelectric protector (herein after called "protector") is electro-sensitive protective equipment
(ESPE); it is also named "safety light curtain".
It is used in a vertical or horizontal position, can be satisfied wherever hazardous points-of-
operation and danger areas require safeguarding.
The protector only protects the rectangular region of the light curtain. If it is installed not to be
correct, either operation is not according to the instruction manual and the correlation security
working rule, or the stamping equipments have faults, or other possible causes, it is unable to exert
the protective function.
Therefore, before installation and operation the protector, please read carefully and understand
fully related items in the instruction manual, in particular apprehend about the items stressed as
"Warning", "Attention" and so on.
In operating, please understand correctly and fully the operating performance about the protector,
operate strictly according to the requests proposed in the instruction manual, stipulate the relevant
security working rule.
Application is only introduced that the protector is used on the press in this instruction manual;
other applications may be consulted this instruction manual.
The contents of this instruction manual are explained by Shandong Laien Optic-electronic
Technology Limited Company, if you have any unclear items, please contact us.
Foreword

List of Contents
1 Important Information
1.1 Summarize.....................................................................................................................................1
1.2 The Makeup of This Manual...........................................................................................................1
1.3 Control Dependability ..............................................................................................................1
1.4 EU Directives Verification..................................................................................................1
1.5 EU Standards Verication..............................................................................................................2
1.6 GB Standards Verication..............................................................................................................3
2 Basic Introduction
2.1 Terminology...................................................................................................................................4
2.2 Usage.........................................................................................................................................5
2.3 Features ....................................................................................................................5
2.4 Relations between Light Axis Pitch and Detection precision...........................................................5
2.5 Technical Parameters......................................................................................................6
2.6 Specications.................................................................................................................................7
2.7 Working schematic drawing.....................................................................................................7
3 User self-service function
3.1 User self-service function introduction.................................................................................8
3.2 The function and operation of the handheld device.......................................................................9
3.3The function and operation of the self-service software.................................................................10
4 Installation
4.1 To Determine a Safety Distance...................................................................................................12
4.2 To Determine Placement Position................................................................................................14
4.3 Installation of multiple protectors.............................................................................15
4.4 Reflecting Surface Influence around the Light Curtain...................................................16
4.5 Accessories..................................................................................................................................17
4.6 Installation tools ......................................................................................................................... 19
5 S4 Series Light Curtain’s installation
5.1 S4 parts’ function description ....................................................................................................19
5.2 Specication sheet and external dimensions...............................................................................20
6 Wiring of S4 Series Sensor
6.1 Wiring of NPN Output Type Protector............................................................................................21
6.2 Wiring of PNP Output Type Protector...........................................................................................22
6.3 The signal table............................................................................................23
6.4 Cascade light cutrain............................................................................................23
6.5 Warning of wiring............................................................................................24

List of Contents
7 Debugging of S4 sensors
7.1 Debugging of emitter and receiver.............................................................................................25
7.2 Operation Test of Entire System....................................................................................................25
8 Operation, Check and Maintenance
8.1 Attention.......................................................................................................................................26
8.2 Check and Maintenance...............................................................................................................27
9 Simple Examination and Repair
9.1 Simple Troubles of System.........................................................................................................28

1
1 Important Information
Summarize
The Makeup of This Manual
Control Dependability
EU Directives Verication
1.1
1.2
1.3
1.4
This manual contains instruction ,operation,installation,wiring,maintenance and troubleshooting of
the S4 series production.
This manual don’t offer the instruction of the machine installed the S4 series.The instruction of
related machine operation may reference the instruction of machinery manufacture.
This manual contains following chapters:
Important information contains emphasis information,the makeup of this manual,control
dependability information,certicate,directive and so on.
Basic introduction contains the usage,features, working schematic drawing and
terminology,technical parameter data and specication of the S4 series photoelectric protector.
Setting and introduction of the user self-service function
Attentions for installation of the protector must be noticed contains calculating a safe distance,
determination of placement position and attentions for neighboring placement.
The function of S4 series parts and shell size.
Wiring contains wiring instruction for controller terminals,wiring for NPN/PNP output.
Ajustment
Check and maintenance
Troubleshooting
The“control dependability”is main indicated that the design ,structure,and connection of the
equipment,system and interface should be fulled with that if the single fault in any of these parts
occurs, it shuld not hinder the implementation of the normal stop action, it should be to prevent the
start up of the follow-up action before troubleshooting.
S4 series incorporate dual-channel redundancy and self-diagnosis function.
This design complys with IEC/EN 61496-1 and IEC/pr EN 61496-2 standards and meets the
requirements for a Type 4 Active Optoelectronic Protective Device, the safest level for safety
products. A single fault or an accumulation of faults in the type 4 device should not lead to the loss of
the safety function.It will keep the safety function for ever.
Directives No.
Machinery Directive 2006/42/EC
Low Voltage Directive 2006/95/EC
EMC Directive 2004/108/EC

2
The installation and usage of the S4 series must comply with applicable EU standards(not all list)
Directives No.
EN ISO 13849-1 Safety of machinery -- Safety-related parts of control systems -- Part 1:
General principles for design
EN 61496-1 Machinery safety-Electro-sensitive protective equipment-Part 1:General
requirements and tests
IEC/pr EN 61496-2 Machinery safety-Electro-sensitive protective equipment-Part 2: Active opto-
electronic protective devices
EN 60204-1 Machinery safety - Machinery electrical equipment
EN ISO 12100-1 Safety of machinery - Basic concepts, general principles for design - Part 1:
Basic terminology, methodology
EN ISO 12100-2 Safety of machinery - Basic concepts, general principles for design - Part 2:
Technical principles
EN ISO 14121-1 Safety of machinery - Risk assessment - Part 1: Principles
IEC 61508-1…-7 Functional safety of electrical/electronic/programmable electronic safety-
related systems
EN 62061 IEC 62061: Safety of machinery - Functional safety of electrical, electronic
and programmable control systems
EN 292 Safety of machinery; basic concepts, general principles for design
EN 999 Safety of machinery - The positioning of protective equipment in respect of
approach speeds of parts of the human body
EN 13857 Safety of machinery -- Safety distances to prevent hazard zones being
reached by upper and lower limbs
EN 692 Machine Security - Mechanical Press
EN 693 Machine Security - Hydraulic Press
EN 201 Injection Molding Machine
EU Standards Verication
1.5
Directives No.
EN 292 Safety of machinery; basic concepts, general principles for design
EN 60204-1 Machinery safety - Machinery electrical equipment
EN ISO 13849-1 Safety of machinery -- Safety-related parts of control systems -- Part
1: General principles for design
IEC/EN 61496-1 Machinery safety-Electro-sensitive protective equipment-Part
1:General requirements and tests
IEC/pr EN 61496-2 Machinery safety-Electro-sensitive protective equipment-Part
2:Active opto-electronic protective devices
The S4 series is designed in compliance with the following EU standards.

3
GB Standards Verication
1.6
The S4 series must comply with the following GB standards
Directives No.
GB 5226.1 Machinery safety - Machinery electrical equipment
GB/T 16855-1 Safety of machinery -- Safety-related parts of control systems -- Part 1:
General principles for design
GB/T 19436-1 Machinery safety-Electro-sensitive protective equipment-Part 1:General
requirements and tests
GB/T 19436-2 Machinery safety-Electro-sensitive protective equipment-Part 2:Active
opto-electronic protective devices
GB 4584-2007 Specication of active opto-electronic protective devices for presses
GB/T 15706-1 Safety of machinery - Basic concepts, general principles for design -
Part 1: Basic terminology, methodology
GB/T 15706-2 Safety of machinery - Basic concepts, general principles for design -
Part 2: Technical principles
GB/T 16856-1 Safety of machinery - Risk assessment - Part 1: Principles
GB/T 20438-1…-7 Functional safety of electrical/electronic/programmable electronic
safety-related systems
GB 27607-2011 Mechanical Press - Safety requirements
GB 28243-2012 Mydrolic plate bender- Safety requirements
GB 28240-2012 Shears—Safety requirements

4
Terminology
Emitter
The emitter consists of emitter units; it can emit the modulated light signal.
Sensor
The sensor consists of emitter units and (or) receiver units. It can emit and (or) accept the modulated
light and form light curtain with a reector (or through reector/mirror). Output a light passing signal
or light intercepting signal to controller. In order to be advantageous for the description, sometimes
also refers to the emitter and (or) the receiver.
Reector
The reector used to reect the modulated light from emitter units to receiver units.
Mirror
The mirror used to change the light direction of transmission from emitter units to receiver units, to
form multi-sides protection light curtain.
Signal cable
The signal cable used to connect the emitter, receiver and the controller, or connect the sensor and
controller.
Light curtain device
All the components that the sensor and the reflector of the reflection type, the emitter and the
receiver of the direct protection type and the reector, the emitter and the receiver of the multi-sides
protection type, produce the light curtain.
Light beam
The emitter unit sends out the infrared light, forms a bunch of parallel light after passing optics part.
Beam center line
It is the middle line of the light beam.
Light axis pitch
The distance of optical axis between the neighboring two bunches of light, uses to express the light
beam density of light curtain, the optical axis spacing is smaller, and the light beam is more crowded.
Detection precision
The light curtains' ability to detect the size of test piece, it means when the light curtain is shaded
anywhere, active opto-electronic protective device can have induction function and when the device
keeps off state, it needs the diameter value of the smallest test piece.
Protective range
The protector can protect length scope.
Light beam number
It is quantity of the light beams that sending out from emitter, the same as the quantity of the emitter
units in the emitter.
Light passing
It is the output state of the protector when the light curtain is not intercepted.
Light intercepting
It is the output state of the protector when the light curtain is intercepted.
2 Basic Introduction
2.1

5
Usage
The Photoelectric Protector is also named Safety Light Curtain, Safety Grating and so on. It is mainly
used for mechanical processing equipment, hazardous work areas, machinery and equipment to
prevent injury to the operator and caused injury or accident by into the dangerous region, to protect
personal safety.
The protector can achieve all trip protection for press which its slide could be stopped by brake at
any place in its slide’s trip, or can achieve protection of the trip between 30°~180° by using cam.
Using the protector in industrial manipulators, mould shapers, packaging equipments, automatic
equipments, jointing pipelining and other operating regions with danger, it can give an alarm after
entering the hazardous area or interlock with the safety system of the equipment, to protect personal
safety.
Features
2.2
2.3
2.4 Relations between Light Axis Pitch and Detection precision
Figure 2-1 Relations between light axis pitch and protection object
Specications Varieties, Application Wide
The protective height of conventional products
is from 113mm to 1493mm;
Pefect self-checking function
Ensure that the photoelectric protector don't
send the mistaken signal to the controlled
electrical equipment when it has faults.
The Self-locking Function
If preset the self-locking function, the press
slide stops moving after interception of light
curtain. But the press can not be restart, when
the light curtain is recovered to passing through
state. It shall be restart by pressing the reset
button.
Immunity
For the electromagnetism signal,the intense
lamplight,the welding and surrounding light
source has better immunity.
Durable life and High reliability
Good Anti-vibration
EDM Function
Auxiliary Focusing Function
Floating Blanking Function
Fixed Blanking Function
Wiring Indicating Function
Troubles Indicating Function
Second Trigger Function
Elective output mode(NPN or PNP)
P is light axis pitch,
R is detection precision,
D is the width of the lens(6.5mm)
R=P+D
R=14mm,protect the gure
R=21mm,protect the hand or ngure,
R=36mm,protect the arm or hand

6
Performance characteristics
Protective range 0～6000mm
Protective height H=(beams-1)×light axis pitch
Detection precision 14mm, 21mm,36mm
Light axis pitch 7.5mm,15mm,30mm
Light source Infrared light, 850nm
EAA Max 2.5°
Resistance to light interference 10000Lux (angle of incidence >=5°)
Electrical properties
Operating power DC24V±15%
Power consumption <10W(without load)
Control output Dual transistor output（PNP or NPN）、load current
100mA，residual voltage below 1.4V
Auxiliary output Single transistor output （PNP）、load current 120mA，
residual voltage below 1.4V
Response time 5～35ms
Status indicator
Emitter light passing(green),light intercepting(red),LED indicator
light;state,fault indicator(LED display)
Receiver light passing(green),light intercepting(red),LED indicator
light;state、fault indicator(LED display)
Noise immunity IEC61000-4-4：level Ⅲ/IEC61000-4-2：level Ⅲ
Insulating resistance ＞100MΩ
Dielectric strength AC1500V，60s
Physical characteristics
Ambient temperature -10℃～55℃
Humidity 20℃,RH≤85%
Vibration
Frequency range: 10 to 55 Hz
Sweep rate: 1 octave/min
Amplitude: 0.35 ± 0.05 mm.
Number of sweeps: 20 for each of three mutually
perpendicular axes
Sealing IP65
Shell material Sensor: Aluminium alloy;
Light lter: PMMA
Technical Parameters
2.5
The protector technical parameters sheet

7
□□ □□ □□□—□—□
Emitter
受光器
Receiver
发光器
2.6 Specications
2.7 Working schematic drawing
The specications of the protector contains ve parts spaced by “- ”; the st part denotes the light curtain;
the second part denotes the detection precision; the third part denotes protection height; the fourth part
denotes the output way; the fth part denotes other information.
For example:
S4-14-113 - P - W S4 series, the detection precision is 14mm, the protection height is 113mm, PNP
output and using the Right-angle bracket.
Additive information:
Y: Integrated steel pipe bracket;
F: Split steel pipe bracket;
Z: Combine bracket;
W: Right-angle bracket;
S: Double rotatable arms steel pipe
bracket;
T: Special request
Output way (one letter):
N: NPN output,
P: PNP output.
Protection height
(three or four letters):
for example,113,1493
Detection precision(two letters):
14: 14mm, 21: 21mm, 36: 36mm
Series(two letters):
S4: S4 series
The protector consists of emitter,receiver,signal cables. The light curtain can form infrared light
curtain, detect the signal of passing or intercepting, transmits the the signal of passing or intercepting
light through the signal cable through .
Figure 2-2 Working schematic drawing of S4 series

8
3 User self-service function
3.1 User self-service function introduction
Shandong laien optic-electronic technology co., ltd. bases on the customer's demand and the
using environment, equips two devices (S4 - H, S4 - U) for the S4 protector, used in advanced
function.
S4's advanced functions: Fixed Blanking Function, Floating Blanking Function, Second Trigger
Function, output way switchover
Fixed Blanking Function:
The user can close S4 pretector's one or more light beams as required.
Floating Blanking Function:
The user closes the light beam is dynamic. For example, open the floating blanking function,
set 2, blank two or less than two light beams, protector is in the condition of light passing. Blank
more than two light beams, protector is in the condition of light intercepting. Set 5 , blank ve or
less than ve light beams, protector is in the condition of light passing. Blank more than ve light
beams, protector is in the condition of light intercepting.
Second Trigger Function:
Obscure the odd times, protector is in the condition of light passing. Obscure even times,
protector is in the condition of light intercepting.
Output way switchover:
Output way can be switched between double road PNP and NPN, can't be switched between
single PNP and NPN. A special CLOCK output is used in controller with our company, other
usage occasion is invalid.
2.8 Technical label

9
3.2 The function and operation of the handheld device
Please make sure the handheld device‘s battery has been installed correctly or power adapter is
connected before power on.
1. Press the power key, device initializing and self-checking, then standby mode
2. Enter the main menu interface, if communication is not successful, Check the cable connection
and power. In the main interface, user can choose "photoelectric information", "function",
"instructions", "about LNTECH" according to their own needs.
Photoelectric Information:
select "photoelectric information" through the cursor and then press the "OK" button. Handheld
devices query the current information. Including: light beams, output condition, number of oating
blanking, whether open droubles indicatingfFunction or not, and the light beams of xed blanking.
just query , cannot be modied.
Function:
1. Select "function" through the cursor, then press "OK" button. Handheld device will enter the
function menu. Including: floating blanking function, fixed blanking function, output way function,
second trigger function.
2. Select "oating blanking function" through the cursor,and then press the button "OK". Handheld
device will enter the menu of "oating blanking function". Pressing the up or down key can increse or
reduce the light beams, press "F1" to save.
3. Select "xed blanking function" through the cursor, and then press the button "OK". The device will
enter the mode of "xed blanking function". Pressing the right or left key can select number of the
light beams .Pressing the up or down key can turn pages, press "F1" to save.
4. Select the output way through the cursor, and then press the button of OK. Pressing the right or
left key can change the output way, press F1 to save.
5. Select "second trigger function" through the cursor, then press ok button,. The device will enter
"second trigger function". Pressing up or down key can open or close the second trigger function,
press F1 to save.
1. Setting xed or oating function, the detection precision becomes low. At this time, take other
protective measures to protect the area, or adjust the safe distance of the light curtain.
2, Set up the second trigger function, trigger time is more than 30 s, reset again.

10
Setting the S4 through S4-H,S4-U, the factory default state will change. According to actual
environment,Users need change carefully to avoid protector's abnormal using and even
happen a dangerous accident.Don't shut off the power or pull out the cable during the process
of setting.If the data written wrong, please write data again. After setting, check again, make
sure that the result is right.
Before using, make sure the PC or notebook has installed S4 special self-help software.
1. Connect USB to USB controlling box and PC. Connect 9 core cable to recever and USB control
box.
2. Open the S4 special self-help software, then enter user name and password.(default user
name:laienkeji password: 00000000). Click the login button, enter the following interface:
3.3 The function and operation of the self-service software
The software user name and password must be modified in the first time,
and there must be a special person responsible for control to prevent
unnecessary amendments .
3. Clicking "open the device" button will open all software functions
Instructions:
Select the "instructions" through the cursor, press OK. The device will enter the interface of
instructions.
About LNTECH:
Select the "about LNTECH" through the cursor, then press OK button. You can get the contact way of
the company.

11
4. Users choose function according to usage
Setting Output mode:
The mouse clicks the PNP output drop-down menu, choose the output
mode, and then click the output mode button,nally click save.
Setting oating blanking function:
The mouse clicks the oating blanking input box, input the light beams as
required, and then click the oating blanking, nally click save.
Setting second trigger function:
The mouse clicks the second trigger function button to open or close the
function.
Setting xed blanking function:
The mouse clicks the xed blanking modication parameter list, changing
"start" switch to "off".
If you need to track the status of equipment, click button.If you need to exit the setup,
click button. If you need to save the Settings, click button.

12
4 Installation
4.1 To Determine a Safety Distance
The safety distance is the minimum distance that must be maintained between the light curtain and
the dangerous parts of the machine, so that the machine can be stopped before a human body or an
object can reach the dangerous parts .
In order to guarantee the operator's personal safety, the light curtain's installment position must meet
the requirements of the safety distance, otherwise a possible accident may occur.
Regarding the press which the slide can stop in the optional position, its safety distance Ds
computational method is given by the formula 1.
Ds = KT + C .............................. Formula 1
In the formula:
Ds---Safety distance, the unit is millimeter (mm);
K---Intrusion velocity of operator’s body or object, the unit is millimeter per second (mm/s);
T---Total response time of equipment, the unit is second (s);
C---Additional distance, the unit is millimeter (mm).
(2) K Value Determination
When the light curtain is installed in a horizontal position, taken as 1600mm/s for calculation.
When the light curtain is installed in a vertical position, and the safety distance is no longer than
500mm, taken as 2000mm/s; if the safety distance is longer than 500mm, then taken as 1600mm/s
for calculation.
(3) T Value Determination
The total response time of equipment T includes two parts, response time of the protector and
maximum halting time of the equipment.
The response time of the protector is given by the supplier.
The maximum halting time of the equipment needs to be measured.
(4) C Value Determination
Additional distance C is determined according to the distance that the operator’s hands enter the
light curtain and extend to hazard point by certain speed, until the protector is able to achieve
protection condition.
When the press is not used the self-lock (start - restart locking) function by the protector, according
to its examination precision, when calculating safety distance, should use the Table 4-1 stipulations
at least.
(1)

13
Table 4-1
Examination precision
Unit: mm
Additional distance C
Unit: mm
Carried on the traveling schedule
start by the photoelectric protector
<=14 0
Be allowed14 to 20 80
20 to 30 130
30 to 40 240
Be not allowed
>40 850
When the press is used the self-lock (start - restart locking) function by the photoelectric protector,
may take as C=0.
A. The safe distance is one of essential conditions that the photoelectric protector ensures to
realize protection function, must calculate the safety distance correctly.
B. Installation must guarantee that minimum distance between light curtain and dangerous
area is bigger than the safety distance.
A. Adopt the emergency stop time of the label on the press if the production date is less than
one year.
B. It is necessary to mensurate the emergency stop time of the machine, compare with the time
of the label on the press and the production date, if the production date is more than one
year, and choose the bigger one.

14
4.2 To Determine Placement Position
The placement position is one of necessary conditions for photoelectric
protector to achieve protection function. It must be correct.
Placement position is a light curtain position in relation to up and down margins of mould opening
in press, i.e. in the condition which safety distance is ensured to achieve, the position of the lowest
light beam of the protector could not be higher than the down margin of mould opening, the position
of the highest light beam of the protector could not be lower than the up margin of mould opening.
The protection height of light curtain used on press must be insured:
Figure 4-2 Placement position schematic drawing for light curtain
A. The safety distance and placement position shall be readjusted if the mould used in press is
change to a new one.
B. If the press faults, it must be checked and repaired; or even if the protector is installed in
correct position, safety cannot be ensured.
C. When safety distance is over 400mm, necessary assistant means should be taken.
Protection height >slide traveling schedule + adjustment quantity

15
4.3 Installation of multiple protectors
When 2 or more protectors are installed one close to another, it is easy to produce disturbs mutually
between the light curtains. In order to avoid the emitter sends out light signal to the neighbor another
receiver, it should be placement to reference the gure following.
Figure 4-3 Placement schematic drawing for prevented the neighboring
light curtain disturbs mutually
A. The mutual disturbance between the protectors can cause the protectors to lose the
normal function, so as to lose the protective function.
B. Please act according to the special details, use correct placement method, eliminate the
disturbance between the protectors and guarantee the security.

16
Protection range L Permitted distance A
0.3 to 3m 0.16m
>3m L × tan2.5°=L×0.052
Figure 4-4 The placement position schematic drawing of prevented the
inuence from the reecting surface around the light curtain
Emitter Receiver
2.5。
2.5。
2.5。
2.5。
α
Working distance L
4.4 Reecting Surface Inuence around the Light Curtain
The cone has a aperture Angle alpha, it
formed between the optical axis and a light
beam on the edge of the cone.
Alpha = aperture Angle of the light beam
L = the distance between the emitter and
receiver
A. The smooth reecting surface around the light curtain, can cause the protector to lose the
normal function, so as to lose the protective function.
B. The placement position of the protector, must be as far as possible away the reecting
object, or cover up the reflecting object, eliminates the disturbance around the light
curtain, guarantee the security.
If it has the smooth reflecting surface around the light curtain, like the metal plate, the floor, the
ceiling, the work piece, the cover, the partition board, the glass plate and so on, the protector
placement position must be apart from the reecting surface farther than value A (m), value A can be
calculated by the formula in form, or be consulted from the coordinates chart.