Leuze MLC 530 SPG User manual

SAFE IMPLEMENTATION AND OPERATION
Original operating instructions
EN 2018/07 - 50132717 We reserve the right to make technical changes
MLC 530 SPG
Safety Light Curtains

© 2018
Leuze electronic GmbH & Co. KG
In der Braike 1
D-73277 Owen / Germany
Phone: [phone]
Fax: [phone]
http://www.leuze.com
[email protected]
Leuze electronic MLC 530 SPG 2

Table of contents
Leuze electronic MLC 530 SPG 3
Table of contents
1 About this document ............................................................................................5
1.1 Used symbols and signal words ............................................................................................. 5
1.2 Checklists................................................................................................................................ 6
2 Safety .....................................................................................................................7
2.1 Intended use and foreseeable misuse.................................................................................... 7
2.1.1 Intended use........................................................................................................................7
2.1.2 Foreseeable misuse ............................................................................................................8
2.2 Necessary competencies........................................................................................................ 8
2.3 Responsibility for safety.......................................................................................................... 9
2.4 Disclaimer ............................................................................................................................... 9
3 Device description ..............................................................................................10
3.1 Overview of Smart Process Gating (SPG)............................................................................ 10
3.2 Device overview of the MLC family....................................................................................... 10
3.3 Connection technology ......................................................................................................... 12
3.4 Display elements .................................................................................................................. 12
3.4.1 Operating indicators on the MLC500 transmitter..............................................................12
3.4.2 Operating indicators on the MLC530SPG receiver .........................................................13
3.4.3 Alignment display ..............................................................................................................15
4 Functions.............................................................................................................16
4.1 Start/restart interlock RES .................................................................................................... 16
4.2 Transmission channel changeover ....................................................................................... 17
4.3 Operating range selection..................................................................................................... 17
4.4 Signal output......................................................................................................................... 17
4.5 Blanking ................................................................................................................................ 18
4.5.1 Fixed blanking ...................................................................................................................18
4.6 Smart Process Gating........................................................................................................... 20
4.6.1 SPG prerequisites .............................................................................................................22
4.6.2 Examples of signal generation for SPG mode ..................................................................24
4.6.3 Operating mode1 (qualified stop) ..................................................................................... 24
4.6.4 Operating mode5..............................................................................................................26
4.6.5 Operating mode 6 (partial gating)......................................................................................27
4.6.6 SPG termination by the control .........................................................................................29
4.6.7 SPG timeout extension......................................................................................................29
4.6.8 Gating sequence reset ......................................................................................................30
4.6.9 SPG restart........................................................................................................................31
4.6.10 Override.............................................................................................................................32
4.7 Error reset............................................................................................................................. 32
5 Applications ........................................................................................................33
5.1 Access guarding with SPG ................................................................................................... 33
5.1.1 Blanking.............................................................................................................................34
6 Mounting..............................................................................................................35
6.1 Arrangement of transmitter and receiver .............................................................................. 35
6.1.1 Calculation of safety distanceS ........................................................................................35
6.1.2 Calculation of safety distance if protective fields act orthogonally to the approach direction...36
6.1.3 Calculation of safety distanceS for parallel approach to the protective field ....................41
6.1.4 Minimum distance to reflective surfaces ...........................................................................42
6.1.5 Resolution and safety distance during fixed blanking .......................................................43
6.1.6 Preventing mutual interference between adjacent devices ............................................... 44

Table of contents
Leuze electronic MLC 530 SPG 4
6.2 Mounting the safety sensor................................................................................................... 45
6.2.1 Suitable mounting locations ..............................................................................................46
6.2.2 Definition of directions of movement .................................................................................47
6.2.3 Fastening via BT-NC60 sliding blocks...............................................................................47
6.2.4 Fastening via BT-2HF swivel mount..................................................................................48
6.2.5 Fastening via BT-2SB10 swiveling mounting brackets .....................................................48
6.2.6 One-sided mounting on the machine table........................................................................49
7 Electrical connection..........................................................................................50
7.1 Pin assignment transmitter and receiver .............................................................................. 51
7.1.1 MLC500 transmitter..........................................................................................................51
7.1.2 MLC530SPG receiver .....................................................................................................53
7.2 Operating mode1 (SPG with qualified stop function)........................................................... 53
7.3 Operating mode5 ................................................................................................................. 55
7.4 Operating mode 6 (partial gating) ......................................................................................... 57
8 Starting up the device ........................................................................................59
8.1 Switching on ......................................................................................................................... 59
8.2 Aligning the sensor ............................................................................................................... 59
8.3 Acknowledgement button ..................................................................................................... 60
8.3.1 Unlocking start/restart interlock .........................................................................................60
8.3.2 SPG restart and override...................................................................................................61
8.4 Teaching of fixed blanking areas .......................................................................................... 62
9 Testing .................................................................................................................63
9.1 Before the initial start-up and following modifications........................................................... 63
9.1.1 Checklist for integrator – to be performed prior to the initial start-up and following modifications .... 63
9.2 Regularly by qualified persons.............................................................................................. 65
9.3 Periodically by the operator .................................................................................................. 65
9.3.1 Checklist – periodically by the operator.............................................................................66
10 Maintenance ........................................................................................................67
11 Troubleshooting..................................................................................................68
11.1 What to do in case of failure? ............................................................................................... 68
11.2 Operating indicators of the LEDs.......................................................................................... 68
11.3 Error messages 7-segment display ...................................................................................... 69
12 Disposal ...............................................................................................................74
13 Service and support ...........................................................................................75
14 Technical data .....................................................................................................76
14.1 General specifications .......................................................................................................... 76
14.2 Dimensions and weights....................................................................................................... 78
14.3 Dimensioned drawings: Accessories .................................................................................... 80
15 Order guide and accessories.............................................................................83
16 EC Declaration of Conformity............................................................................89

About this document
Leuze electronic MLC 530 SPG 5
1 About this document
1.1 Used symbols and signal words
Tab.1.1: Warning symbols and signal words
Symbol indicating dangers to persons
Symbol indicating possible property damage
NOTE Signal word for property damage
Indicates dangers that may result in property damage if the measures for dan-
ger avoidance are not followed.
CAUTION Signal word for minor injuries
Indicates dangers that may result in minor injury if the measures for danger
avoidance are not followed.
WARNING Signal word for serious injury
Indicates dangers that may result in severe or fatal injury if the measures for
danger avoidance are not followed.
DANGER Signal word for life-threatening danger
Indicates dangers with which serious or fatal injury is imminent if the measures
for danger avoidance are not followed.
Tab.1.2: Other symbols
Symbol for tips
Text passages with this symbol provide you with further information.
Symbol for action steps
Text passages with this symbol instruct you to perform actions.
Symbol for action results
Text passages with this symbol describe the result of the preceding action.
Tab.1.3: Terms and abbreviations
AOPD Active Optoelectronic Protective Device
(Active Optoelectronic Protective Device)
Blanking Deactivation of the protective function of individual beams or beam areas with
monitoring for interruption
CS Switching signal from a control
(Controller Signal)
FG Function group
(Function Group)
LED LED, display element in transmitter and receiver
MLC Brief description of the safety sensor, consisting of transmitter and receiver
MTTFdMean time to dangerous failure
(Mean Time To dangerous Failure)
OSSD Safety-related switching output
(Output Signal Switching Device)

About this document
Leuze electronic MLC 530 SPG 6
PFHdProbability of a dangerous failure per hour
(Probability of dangerous Failure per Hour)
PFI (Protection Field Interrupted)
PL Performance Level
P-mode Protective mode
Reduced resolution Reduction of the detection capability of the protective field without monitoring
for tolerating small objects in the protective field
RES Start/restart interlock
(Start/REStart interlock)
Scan Consecutive scans of the protective field from the first to the last beam
Safety sensor System consisting of transmitter and receiver
SIL Safety Integrity Level
SPG Smart Process Gating
TH Timer halt signal
State ON: device intact, OSSD switched on
OFF: device intact, OSSD switched off
Locking: device, connection or control / operation faulty, OSSD switched off
(lock-out)
1.2 Checklists
The checklists (see chapter 9 "Testing") serve as a reference for the machine manufacturer or supplier.
They replace neither testing of the complete machine or system prior to initial commissioning nor their peri-
odic testing by a qualified person (see chapter 2.2 "Necessary competencies"). The checklists contain mini-
mum testing requirements. Depending on the application, other tests may be necessary.

Safety
Leuze electronic MLC 530 SPG 7
2 Safety
For mounting, operating and testing, this document as well as all applicable national and international stan-
dards, regulations, rules and directives must be observed. Relevant and supplied documents must be ob-
served, printed out and handed to affected persons.
ÄBefore working with the safety sensor, completely read and observe the documents applicable to your
task.
In particular, the following national and international legal regulations apply for the commissioning, techni-
cal inspections and work with safety sensors:
• Machinery directive 2006/42/EC
• Low voltage directive 2014/35/EU
• EMC directive 2014/30/EU
• Use of work equipment directive 89/655/EEC supplemented by directive 95/63EC
• OSHA 1910 Subpart O
• Safety regulations
• Accident-prevention regulations and safety rules
• Ordinance on Industrial Safety and Health and employment protection act
• Product Safety Law (ProdSG and 9. ProdSV)
NOTICE
For safety-related information you may also contact local authorities (e.g., industrial inspec-
torate, employer's liability insurance association, labor inspectorate, occupational safety and
health authority).
2.1 Intended use and foreseeable misuse
WARNING
A running machine may result in serious injury!
ÄMake certain that the safety sensor is correctly connected and that the protective function of
the protective device is ensured.
ÄMake certain that, during all conversions, maintenance work and inspections, the system is
securely shut down and protected against being restarted.
2.1.1 Intended use
• The safety sensor may only be used after it has been selected in accordance with the respectively ap-
plicable instructions and relevant standards, rules and regulations regarding labor protection and safety
at work, and after it has been installed on the machine, connected, commissioned, and checked by a
competent person (see chapter 2.2 "Necessary competencies"). The devices are designed for indoor
use only.
• When selecting the safety sensor it must be ensured that its safety-related capability meets or exceeds
the required performance level PLr ascertained in the risk assessment (see chapter 14.1 "General
specifications").
• The safety sensor protects persons or body parts at points of operation, danger zones or access points
of machines and systems.
• With the “access guarding” function, the safety sensor detects persons only when they enter the danger
zone but cannot tell whether there are any persons inside the danger zone. For this reason, a start/
restart interlock or a suitable stepping behind protection in the safety chain is essential in this case.
• The construction of the safety sensor must not be altered. When manipulating the safety sensor, the
protective function is no longer guaranteed. Manipulating the safety sensor also voids all warranty
claims against the manufacturer of the safety sensor.
• The safety sensor must be inspected regularly by a competent person to ensure proper integration and
mounting (see chapter 2.2 "Necessary competencies").
• The safety sensor must be exchanged after a maximum of 20 years. Repairs or the exchange of wear
parts do not extend the mission time.

Safety
Leuze electronic MLC 530 SPG 8
2.1.2 Foreseeable misuse
Any use other than that defined under the “Approved purpose” or which goes beyond that use is consid-
ered improper use.
In principle, the safety sensor is not suitable as a protective device for use in the following cases:
• Danger posed by ejected objects or the spraying of hot or hazardous liquids from within the danger
zone
• Applications in explosive or easily flammable atmospheres
2.2 Necessary competencies
The safety sensor may only be configured, installed, connected, commissioned, serviced and tested in its
respective application by persons who are suitably qualified for the given task. General prerequisites for
suitably qualified persons:
• They have a suitable technical education.
• They are familiar with the relevant parts of the operating instructions for the safety sensor and the oper-
ating instructions for the machine.
Task-specific minimum requirements for suitably qualified persons:
Configuration
Specialist knowledge and experience in the selection and use of protective devices on machines as well as
the application of technical rules and the locally valid regulations on labor protection, safety at work and
safety technology.
Mounting
Specialist knowledge and experience needed for the safe and correct installation and alignment of the
safety sensor with regard to the respective machine.
Electrical installation
Specialist knowledge and experience needed for the safe and correct electrical connection as well as safe
integration of the safety sensor in the safety-related control system.
Operation and maintenance
Specialist knowledge and experience needed for the regular inspection and cleaning of the safety sensor –
following instruction by the person responsible.
Servicing
Specialist knowledge and experience in the mounting, electrical installation and the operation and mainte-
nance of the safety sensor in accordance with the requirements listed above.
Commissioning and testing
• Experience and specialist knowledge in the rules and regulations of labor protection, safety at work and
safety technology that are necessary for being able to assess the safety of the machine and the use of
the safety sensor, including experience with and knowledge of the measuring equipment necessary for
performing this work.
• In addition, a task related to the subject matter is performed in a timely manner and knowledge is kept
up to date through continuous further training ‑ Competent person in terms of the German Betrieb-
ssicherheitsverordnung (Ordinance on Industrial Safety and Health) or other national legal regulations.

Safety
Leuze electronic MLC 530 SPG 9
2.3 Responsibility for safety
Manufacturer and operator must ensure that the machine and implemented safety sensor function properly
and that all affected persons are adequately informed and trained.
The type and content of all imparted information must not lead to unsafe actions by users.
The manufacturer of the machine is responsible for:
• Safe machine construction
• Safe implementation of the safety sensor, verified by the initial test performed by a competent person
(see chapter 2.2 "Necessary competencies")
• Imparting all relevant information to the operating company
• Adhering to all regulations and directives for the safe commissioning of the machine
The operator of the machine is responsible for:
• Instructing the operator
• Maintaining the safe operation of the machine
• Adhering to all regulations and directives for labor protection and safety at work
• Periodic testing by a competent person (see chapter 2.2 "Necessary competencies")
2.4 Disclaimer
The liability of Leuze electronic GmbH + Co. KG is to be excluded in the following cases:
• Safety sensor is not used as intended.
• Safety notices are not adhered to.
• Reasonably foreseeable misuse is not taken into account.
• Mounting and electrical connection are not properly performed.
• Proper function is not tested (see chapter 9 "Testing").
• Changes (e.g., constructional) are made to the safety sensor.

Device description
Leuze electronic MLC 530 SPG 10
3 Device description
The safety sensor consists of a transmitter and a receiver (see chapter 3.2 "Device overview of the MLC
family"). It is protected against overvoltage and overcurrent acc. to IEC60204-1 (protection class3). The
safety sensor is not dangerously influenced by ambient light (e.g., welding sparks, warning lights).
3.1 Overview of Smart Process Gating (SPG)
SPG is a timing-controlled control process for access guarding with bridging function. External muting sen-
sors are not necessary here. Instead, two independent control signals are needed for activation of the
bridging function:
• A CS switching signal (“controller signal”) from a control (see chapter 4.6 "Smart Process Gating").
• A protective field interruption(PFI) which was created by the transport material; this interruption must
be detected by the receiver within 4s after the CS signal is applied.
The CS switching signal can be supplied by a standard PLC or by a safety PLC, whereby various safety
levels are reached (see following table).
Tab.3.1: Dependence of the safety level on the used control
Safety Integrity Level in accor-
dance with ENIEC62061
Performance level in accor-
dance with
ENISO13849-1:2008
Standard PLC SIL2 PLd
Safety PLC SIL3 PLe
3.2 Device overview of the MLC family
The series is characterized by four different receiver classes (Basic, Standard, Extended, SPG) with spe-
cific features and properties (see table below).
Tab.3.2: Device models in the series with specific features and functions
Device type Transmitter Receiver
Function
package
Basic Standard Ex-
tended
SPG
Model MLC 500
MLC 501
MLC 500/
A
MLC 502 MLC 510
MLC 511
MLC 510/
A
MLC 520 MLC 530 MLC 530
SPG
OSSDs (2x) ■ ■ ■ ■
AS-i ■ ■
Transmission
channel
changeover
■ ■ ■ ■ ■ ■
LED indicator ■ ■ ■ ■ ■ ■ ■ ■
7‑segment
display
■■■
Automatic
start/restart
■ ■ ■
RES ■ ■ ■
EDM ■
Linkage ■
Blanking ■ ■
Muting ■