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.

Safety
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.

Safety
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.

Safety
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.

Safety
Leuze electronic GmbH + Co. KG MLC 530 SPG 11
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 and information on any residual risks
• 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 10 "Testing").
• Changes (e.g., constructional) are made to the safety sensor.

Device description
Leuze electronic GmbH + Co. KG MLC 530 SPG 12
3 Device description
The safety sensor consists of an MLC500 transmitter and an MLC530SPG receiver. 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 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.3.1: 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 ■

Device description
Leuze electronic GmbH + Co. KG MLC 530 SPG 13
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
SPG ■
Multi-scan ■ ■
Range reduc-
tion
■ ■
Test input ■
Protective field properties
The beam distance and the number of beams are dependent on the resolution and protective field height.
NOTICE
Depending on the resolution, the effective protective field height can be larger than the optically
active area of the safety sensor housed in yellow (see chapter 3.1 "Device overview of the MLC
family" and see chapter 15.1 "General specifications").
Device synchronization
The synchronization of receiver and transmitter for creating a functioning protective field is done optically,
i.e. without cables, via two specially coded synchronization beams. A cycle (i.e. a pass from the first to the
last beam) is called a scan. The length of a scan determines the length of the response time and affects the
calculation of the safety distance (see chapter 7.1.1 "Calculation of safety distanceS").
NOTICE
For the correct synchronization and function of the safety sensor, at least one of the two syn-
chronization beams must be free during synchronization and operation.
During the SPG process, an interruption of both synchronization beams up to 60s is possible
(see chapter 4.1 "Overview and principle").
a
b
b
a Optically active area, housed in yellow
b Synchronization beams
Fig.3.1: Transmitter-receiver system

Device description
Leuze electronic GmbH + Co. KG MLC 530 SPG 14
QR code
A QR code as well as the corresponding web address are located on the safety sensor.
At the web address, you will find device information and error messages (see chapter 12.3 "Error mes-
sages 7-segment display") after scanning the QR code with a mobile end device or after entering the web
address.
When using mobile end devices, mobile service charges can accrue.
Fig.3.2: QR code with corresponding web address (URL) on the safety sensor
3.2 Connection technology
The transmitter and receiver feature an M12 connector as an interface to the machine control with the fol-
lowing number of pins:
Device model Device type Device plug
MLC 500 Transmitter 5-pin
MLC 530 SPG Extended receiver, Smart Process
Gating
8-pin
3.3 Display elements
The display elements of the safety sensors simplify start-up and fault analysis.
3.3.1 Operating indicators on the MLC500 transmitter
Located in the connection cap on the transmitter are two LEDs which serve as function indicators:
12
1 LED1, green/red
2 LED2, green
Fig.3.3: Indicators on the MLC 500 transmitter
Tab.3.2: Meaning of the LEDs on the transmitter
State Description
LED1 LED2
OFF OFF Device switched off

Device description
Leuze electronic GmbH + Co. KG MLC 530 SPG 15
State Description
LED1 LED2
Green OFF Normal operation on channel1
Green Green Normal operation on channel2
Green, flashing OFF Reduced operating range on channel1
Green, flashing Green, flashing Reduced operating range on channel2
Red OFF Device error
Green Red, flashing External test (MLC 502 only)
3.3.2 Operating indicators on the MLC530SPG receiver
Three LEDs and a 7-segment display for visualizing the operating state are located on the receiver:
14
5
6
2
7
3
1 LED1, red/green
2 LED2, yellow
3 LED3, blue
4 OSSD icon
5 RES icon
6 Blanking/SPG icon
7 7‑segment display
Fig.3.4: Indicators on the MLC 530 SPG receiver
Tab.3.3: Meaning of the LEDs on the receiver
LED Color State Description
1 Red/green OFF Device switched off
Red OSSD off
Red, flashing slowly (approx.1Hz) External error
Red, flashing fast (approx.10Hz) Internal error
Green OSSD on
2 Yellow OFF • RES activated and enabled
• or RES blocked and protective
field interrupted
ON, OSSD off RES activated and blocked but
ready to be unlocked - protective
field free
ON, OSSD on CS switching signal is applied

Device description
Leuze electronic GmbH + Co. KG MLC 530 SPG 16
LED Color State Description
3 Blue OFF No special function (blanking,
SPG,…) active
ON Protective field parameter (blank-
ing) correctly taught
Slowly flashing • SPG active
• or override active
Short flashing Protective field interrupted and
RES blocked
• Teaching of protective field pa-
rameters
• or restart/override necessary
7‑segment display
In normal operation, the 7-segment display shows the number of the operating mode. In addition, it helps
during the detailed error diagnostics (see chapter 12 "Troubleshooting") and serves as an alignment aid
(see chapter 9.2 "Aligning the sensor").
Tab.3.4: Meaning of the 7-segment display
Display Description
After switching on
8 Self test
tnn Response time (t) of the receiver in milliseconds (nn)
In normal operation
1, 4, 5 or 6 Selected operating mode
1, 4, 5 or 6 flashing Weak signal
For alignment
Alignment display (see chapter 3.3.3 "Alignment display").
• Segment1: beam area in upper third of the protective field
• Segment2: beam area in middle third of the protective field
• Segment3: beam area in lower third of the protective field
For error diagnostics
F… Failure, internal device error
E… Error, external error
U… Usage info, application error
For error diagnostics, the error's respective letter is displayed first followed by the number code. The dis-
play is repeated cyclically. In the case of blocking errors, the voltage supply must be separated and the
cause of the error must be eliminated. Before switching on again, the steps taken before initial commission-
ing must be repeated (see chapter 10.1 "Before commissioning and following modifications").
The 7-segment display switches to alignment mode when the device has not yet been aligned or when the
protective field has been interrupted (after 5s). In this case, a fixed beam area from the protective field is
assigned to every segment.
3.3.3 Alignment display
Approximately 5s after a protective-field interruption, the 7-segment display switches to alignment mode.
In this mode, one third of the total protective field (top, middle, bottom) is assigned to one of the three hori-
zontal segments. In the case of uniform resolution over the entire protected area, the state of this partial
protective field is indicated as follows:

Device description
Leuze electronic GmbH + Co. KG MLC 530 SPG 17
Tab.3.5: Function of alignment display
Segment Description
On All beams in the beam area are uninterrupted.
Flashing At least one, but not all beams in the beam area are uninterrupted.
Switched off All beams in the beam area are interrupted.
When the protective field has been free for about 5s, the device switches back to the display of the operat-
ing mode.

Smart Process Gating
Leuze electronic GmbH + Co. KG MLC 530 SPG 18
4 Smart Process Gating
4.1 Overview and principle
Smart Process Gating (SPG) is a timing-controlled control process for access guarding with bridging func-
tion.
• SPG is used only for material transport out of or into danger zones.
• SPG uses two independent control signals to activate the bridging function.
• External sensors are not necessary.
SPG principle
Activation of the bridging function takes place by means of two independent control signals:
• A CS switching signal (“controller signal”) from a control.
• A PFI protective field violation signal that was triggered by the transport material which must be de-
tected by the receiver within 4s (2s in operating mode4) after the CS switching signal is applied.
NOTICE
The safety sensor must remain in sync in order to receive a valid protective field violation
signal PFI!
The two synchronization beams of the safety light curtain can be simultaneously interrupted for
no more than 60s during the SPG process.
ÄMake certain that one synchronization beam always remains free.

Smart Process Gating
Leuze electronic GmbH + Co. KG MLC 530 SPG 19
CS
PFI
GA
t1 t2
DD
CS Switching signal from the control
PFI Protective field interrupted
GA Gating active
t1 < 4s or 2s (depending on the operating mode)
t2 0.5s, 1s or 2s (depending on the operating mode)
D <200mm
Fig.4.1: SPG principle
SPG functions and operating modes
The different SPG functions are grouped into several operating modes. Each operating mode is to be con-
sidered a complete parameter set.
• The operating mode is hardwired via a wire bridge in the connection cable. In the event of a device ex-
change, it is neither necessary nor possible to configure the sensor.
• The number of the selected operating mode is displayed statically on the 7-segment display of the re-
ceiver.
• Operating mode1: SPG with qualified stop function (see chapter 4.4.1 "Operating mode1 - Qualified
stop")
• Operating mode4: Standard SPG with short tolerance times (see chapter 4.4.2 "Operating mode4 -
standardwith short tolerance times")
• Operating mode5: Standard SPG (see chapter 4.4.3 "Operating mode5 - Standard")
• Operating mode6: SPG with qualified stop function and partial gating (see chapter 4.4.4 "Operating
mode6 - Partial gating")
Tab.4.1: Overview of the functions in the individual operating modes
Operating mode
Functions 1 4 5 6
Performance Level
PLd with standard control
PLe with safety control ■
■
■
■
■■
Minimum time for ending gating (see chapter 4.5.1 "Controlled
gating end")
100ms 100ms 100ms 100ms
Gating tolerance time t1 4s 2s 4s 4s

Smart Process Gating
Leuze electronic GmbH + Co. KG MLC 530 SPG 20
Operating mode
Functions 1 4 5 6
Protective-field filter time
Brief clearing of the protective field (1s or 2s) is possible with-
out interruption of the gating event. Small gaps in the load can
thereby be tolerated.
2s 0.5s 1s 2s
Max. conveyor speed without additional measure 0.1m/s 0.4m/s 0.2m/s 0.1m/s
Qualified stop ■ ■ ■
Partial gating ■
The following SPG functions are available in all SPG operating modes:
• Gating termination by the control (see chapter 4.5.1 "Controlled gating end")
• Gating timeout extension (see chapter 4.5.2 "Gating timeout extension")
• Gating sequence reset (see chapter 4.5.3 "Gating sequence reset")
• Gating restart (see chapter 4.5.4 "Gating restart")
• Override (see chapter 4.5.5 "Override")
NOTICE
The following general functions of the MLC safety light curtains are available in all SPG operat-
ing modes (see chapter 5 "Functions"):
Start/restart interlock (RES)
Transmission channel changeover
Operating range selection
Signal output
Blanking