Leuze MLC 530 SPG User manual

We reserve the right to make technical changes
EN • 2022-02-15 • 50132717
Original operating instructions
MLC 530 SPG
Safety Light Curtains

© 2022
Leuze electronic GmbH + Co. KG
In der Braike 1
73277 Owen / Germany
Phone: [phone]
Fax: [phone]
www.leuze.com
[email protected]
Leuze electronic GmbH + Co. KG MLC 530 SPG 2

Table of contents
Leuze electronic GmbH + Co. KG MLC 530 SPG 3
Table of contents
1 About this document ............................................................................................6
1.1 Used symbols and signal words ............................................................................................. 6
1.2 Checklists................................................................................................................................ 7
2 Safety .....................................................................................................................8
2.1 Intended use and foreseeable misuse.................................................................................... 8
2.1.1 Intended use........................................................................................................................8
2.1.2 Foreseeable misuse ............................................................................................................9
2.2 Necessary competencies........................................................................................................ 9
2.3 Responsibility for safety........................................................................................................ 11
2.4 Disclaimer ............................................................................................................................. 11
3 Device description ..............................................................................................12
3.1 Device overview of the MLC family....................................................................................... 12
3.2 Connection technology ......................................................................................................... 14
3.3 Display elements .................................................................................................................. 14
3.3.1 Operating indicators on the MLC500 transmitter..............................................................14
3.3.2 Operating indicators on the MLC530SPG receiver .........................................................15
3.3.3 Alignment display ..............................................................................................................16
4 Smart Process Gating ........................................................................................18
4.1 Overview and principle ......................................................................................................... 18
4.2 SPG requirements ................................................................................................................ 21
4.3 SPG checklist for programmers............................................................................................ 23
4.4 SPG operating modes .......................................................................................................... 24
4.4.1 Operating mode1 - Qualified stop ....................................................................................25
4.4.2 Operating mode4 - standardwith short tolerance times...................................................26
4.4.3 Operating mode5 - Standard............................................................................................28
4.4.4 Operating mode6 - Partial gating .....................................................................................29
4.5 Operating-mode-independent SPG functions....................................................................... 32
4.5.1 Controlled gating end ........................................................................................................32
4.5.2 Gating timeout extension...................................................................................................34
4.5.3 Gating sequence reset ......................................................................................................35
4.5.4 Gating restart.....................................................................................................................36
4.5.5 Override.............................................................................................................................37
5 Functions.............................................................................................................38
5.1 Start/restart interlock RES .................................................................................................... 38
5.2 Transmission channel changeover ....................................................................................... 39
5.3 Operating range selection..................................................................................................... 39
5.4 Signal output......................................................................................................................... 39
5.5 Blanking ................................................................................................................................ 40
6 Applications ........................................................................................................43
6.1 Access guarding with SPG ................................................................................................... 43
6.1.1 Transport out of a danger zone .........................................................................................44
6.1.2 Inward transport of pallets .................................................................................................46

Table of contents
Leuze electronic GmbH + Co. KG MLC 530 SPG 4
7 Mounting..............................................................................................................51
7.1 Arrangement of transmitter and receiver .............................................................................. 51
7.1.1 Calculation of safety distanceS ........................................................................................51
7.1.2 Calculation of safety distance if protective fields act orthogonally to the approach direction...52
7.1.3 Calculation of safety distanceS for parallel approach to the protective field ....................57
7.1.4 Minimum distance to reflective surfaces ...........................................................................58
7.1.5 Resolution and safety distance during fixed blanking .......................................................59
7.1.6 Preventing mutual interference between adjacent devices ............................................... 60
7.2 Mounting the safety sensor................................................................................................... 61
7.2.1 Suitable mounting locations ..............................................................................................62
7.2.2 Definition of directions of movement .................................................................................63
7.2.3 Fastening via BT-NC60 sliding blocks...............................................................................63
7.2.4 Fastening via BT-2HF swivel mount..................................................................................64
7.2.5 Fastening via BT-2SB10 swiveling mounting brackets .....................................................64
7.2.6 One-sided mounting on the machine table........................................................................65
8 Electrical connection..........................................................................................66
8.1 Pin assignment transmitter and receiver .............................................................................. 67
8.1.1 MLC500 transmitter..........................................................................................................67
8.1.2 MLC530SPG receiver .....................................................................................................69
8.2 Operating mode1 ................................................................................................................. 69
8.3 Operating mode4 ................................................................................................................. 70
8.4 Operating mode5 ................................................................................................................. 71
8.5 Operating mode6 ................................................................................................................. 72
9 Starting up the device ........................................................................................74
9.1 Switching on ......................................................................................................................... 74
9.2 Aligning the sensor ............................................................................................................... 74
9.3 Acknowledgement button ..................................................................................................... 75
9.3.1 Unlocking start/restart interlock .........................................................................................75
9.3.2 Gating restart and override................................................................................................76
9.4 Teaching of fixed blanking areas .......................................................................................... 77
10 Testing .................................................................................................................78
10.1 Before commissioning and following modifications .............................................................. 78
10.1.1
Checklist for integrator – to be performed prior to commissioning and following modifications........ 78
10.2 To be performed periodically by competent persons............................................................ 80
10.3 Periodically by the operator .................................................................................................. 81
10.3.1 Checklist – periodically by the operator.............................................................................82
11 Maintenance ........................................................................................................83
12 Troubleshooting..................................................................................................84
12.1 What to do in case of failure? ............................................................................................... 84
12.2 Operating indicators of the LEDs.......................................................................................... 84
12.3 Error messages 7-segment display ...................................................................................... 85
13 Disposing.............................................................................................................90
14 Service and support ...........................................................................................91
15 Technical data .....................................................................................................92
15.1 General specifications .......................................................................................................... 92
15.2 Dimensions and weights....................................................................................................... 94
15.3 Dimensioned drawings: Accessories .................................................................................... 96

Table of contents
Leuze electronic GmbH + Co. KG MLC 530 SPG 5
16 Order guide and accessories.............................................................................99
17 EU/EC Declaration of Conformity....................................................................105

About this document
Leuze electronic GmbH + Co. KG MLC 530 SPG 6
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
Response time The response time of the protective device is the maximum time between the
occurrence of the event that results in activation of the safety sensor and the
provision of the switching signal at the interface of the protective device (e.g.,
OFF state of the OSSD pair).
Blanking Deactivation of the protective function of individual beams or beam areas with
monitoring for interruption
ESPE Electro-sensitive protective equipment
CS Switching signal from a control
(Controller Signal)
FG Function group
(Function Group)
LED LED, display element in transmitter and receiver
MaxiScan Multiple scan, up to 100ms
MLC Brief description of the safety sensor, consisting of transmitter and receiver

About this document
Leuze electronic GmbH + Co. KG MLC 530 SPG 7
MTTFdMean time to dangerous failure
(Mean Time To dangerous Failure)
OSSD Safety-related switching output
(Output Signal Switching Device)
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 10 "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.

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Leuze electronic GmbH + Co. KG MLC 530 SPG 8
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:
• Directive 2006/42/EC
• Directive 2014/35/EU
• Directive 2014/30/EU
• 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 15.1 "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.
• Maximum permissible approach speeds (see ISO13855):
• 1.6m/s for access guarding
• 2.0m/s for guards of points of operation
• 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.

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Leuze electronic GmbH + Co. KG MLC 530 SPG 9
• The improper repair of the protective device may result in loss of the protective function. Make no re-
pairs to the device components.
• 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.
SPG can only be used if the following is known to the control:
• The times at which the position of the transport material is no more than 200mm in front of and no
more than 200mm after the electro-sensitive protective equipment (ESPE) are known to the control. In
some cases, additional measures may be necessary for position determination, e.g., trigger, sensor,
etc.
• If additional measures are necessary for position determination, they must not come from a source that
is easily tampered with.
If necessary, use the evaluation of additional information, e.g., belt movement signal.
WARNING
Reduce conveyor speed!
If the time at which the object exits the protective field is not known to the control, the conveyor
speed must be reduced to the maximum value that is permissible for automatic gating end:
Operating modes1, 6: 0.1m/s
Operating mode4: 0.4m/s
Operating mode5: 0.2m/s
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
WARNING
Severe injuries when riding along on or next to the conveyor belt!
ÄMake certain that it is not possible for persons to enter or to ride along on and next to the
conveyor belt or transport material during SPG operation.
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 competent 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.
Specialist knowledge in programming safety-related controls SRASW acc. to ENISO13849-1.

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Leuze electronic GmbH + Co. KG MLC 530 SPG 10
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.