Pepperl Fuchs SLCT, SLCT 35 ORIGINAL INSTRUCTIONS

FACTORY AUTOMATION

ORIGINAL INSTRUCTIONS

SLCT* and SLCT*/35 safety light curtains

AOPD 3AA2

UL FILE NUMBER: E215245

SLCT* and SLCT*/35 safety light curtains

With regard to the supply of products, the current issue of the following document EN is applicable: The General Terms of Delivery for Products and Services of the Electrical Industry, published by the Central Association of the Electrical Industry (Zen-

tralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its most recent version as well as the supplementary clause: "Expanded reservation of proprietorship"

SLCT* and SLCT*/35 safety light curtains

Contents

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1	Introduction.........................................................................		3
	1.1	.............................................................................Content of this Document	3
	1.2	Symbols Used...............................................................................................	3	EN
2	Safety information ..............................................................		5
3	...........................................................Product Description		7
	3.1	Use and Application......................................................................................	7
	3.2	Indicators and Operating Controls ................................................................	9
	3.3	Interfaces and Connections ........................................................................	10
	3.4	Scope of Delivery........................................................................................	11
4	Installation ........................................................................		12
	4.1	Planning and Preparation............................................................................	12
	4.2	Mounting.....................................................................................................	16
	4.3	Reflection....................................................................................................	19
	4.4	Connection and Operating Mode Setting....................................................	20

4.4.1 Signal outputs on the receiver unit..........................................................		21
4.4.2 Signal Inputs on the Transmitter Unit ......................................................		22
4.4.3	Signal inputs on the receiver unit............................................................	23
4.4.4	Typical circuits ........................................................................................	25

5	Commissioning.................................................................		26
	5.1	Functional Testing .......................................................................................	26
	5.2	Multiple Positions ........................................................................................	27
6	Maintenance and Repair..................................................		29
	6.1	Maintenance ...............................................................................................	29
	6.2	Periodic Checks..........................................................................................	29
	6.3	Repairs .......................................................................................................	30
7	Troubleshooting................................................................		31
	7.1	Troubleshooting ..........................................................................................	31
8	Appendix ...........................................................................		33
	8.1	Technical Data ............................................................................................	33
	8.1.1 Functional Safety Standards and Parameters.........................................		36
	8.2	Safety Light Curtains - Profile Lengths and Weight .....................................	37
	8.3	Dimensional Drawing ..................................................................................	39
	8.4	Type Code...................................................................................................	39
	8.5	Application Checklist ..................................................................................	44

SLCT* and SLCT*/35 safety light curtains

Contents

	8.6 Accessories ...............................................................................................		46
	8.6.1	.................................................................Mounting Aid OMH-SLCT-01	51
EN	8.6.2	Mounting Aid OMH-SLCT-02 .................................................................	51
EN	8.6.3	Mounting brackets OMH-SLCT-03 and OMH-SLCT-04	52
	8.6.3	Mounting brackets OMH-SLCT-03 and OMH-SLCT-04	52
	8.6.4	Mounting Aid OMH-SLCT-05 ................................................................	52
	8.6.5	.....................................OMH-SLCT-12 -500 Muting arm with round rod	52
	8.6.6	OMH-07-01 Mounting bracket for circular profiles .................................	52
	8.6.7	OMH-SLCT-100-xxxx Mounting profile for floor mounting......................	52
	8.6.8	OMH-SLCT-110-xxxx Mounting profile with decorative cover (front)......	53
	8.6.9	OMH-SLCT-120-xxx Lateral protective covers for mounting profile........	53
	8.6.10	OMH-SLCT-200 Floor mount for soil column/mounting profile ...............	53
	8.6.11	SLCT-M-01-xxxx inclined mirror for 90° deflection.......................................	54
	8.6.12	Alignment aid.........................................................................................	54
	8.6.13	Test rod..................................................................................................	55
	8.6.14	Connection Cables ................................................................................	55

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SLCT* and SLCT*/35 safety light curtains

Introduction

1.1

1.2

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Introduction

Content of this Document

This document contains safety-relevant information for usage of the device.You		EN

need this information to use your product throughout the applicable stages of the
product life cycle. These can include the following:
■	Product identification
■	Delivery, transport, and storage
■	Mounting and installation
■	Commissioning and operation
■	Maintenance and repair
■	Troubleshooting
■	Dismounting
■	Disposal

Note

For full information on the product, refer to the further documentation on the Internet at www.pepperl-fuchs.com.

The documentation consists of the following parts:

■Original instructions (present document)

■EU declaration of conformity

■Datasheet

For more information about Pepperl+Fuchs products with functional safety, see www.pepperl-fuchs.com/sil.

Symbols Used

This document contains symbols for the identification of warning messages and of informative messages.

Warning Messages

You will find warning messages, whenever dangers may arise from your actions. It is mandatory that you observe these warning messages for your personal safety and in order to avoid property damage.

Depending on the risk level, the warning messages are displayed in descending order as follows:

Danger!

This symbol indicates an imminent danger.

Non-observance will result in personal injury or death.

Warning!

This symbol indicates a possible fault or danger.

Non-observance may cause personal injury or serious property damage.

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SLCT* and SLCT*/35 safety light curtains

Introduction

Caution!

This symbol indicates a possible fault.

Non-observance could interrupt the device and any connected systems and plants, or result in their complete failure.

Informative Symbols

Note

This symbol brings important information to your attention.

Action

This symbol indicates a paragraph with instructions.You are prompted to perform an action or a sequence of actions.

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SLCT* and SLCT*/35 safety light curtains

Safety information

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Safety information

Read the following information carefully and follow this information when working

with the device. Failure to observe the safety information and warning messages EN in this documentation can lead to malfunctions of the safety devices of the

machines or plants in which they are fitted.

This can result in serious personal injury or death.

Target Group, Personnel

Responsibility for planning, assembly, commissioning, operation, maintenance, and dismounting lies with the plant operator.

The personnel must be appropriately trained and qualified in order to carry out mounting, installation, commissioning, operation, maintenance, and dismounting of the device. The trained and qualified personnel must have read and understood the instruction manual.

Prior to using the product make yourself familiar with it. Read the instruction manual carefully.

Reference to Further Documentation

Observe laws, standards, and directives applicable to the intended use and the operating location.

If you use the device in safety-related applications, observe the requirements for functional safety.You can find these requirements in the functional safety documentation under www.pepperl-fuchs.com.

Intended Use

The device is only approved for appropriate and intended use. Ignoring these instructions will void any warranty and absolve the manufacturer from any liability.

If you use the device in safety-related applications, observe the information for safety function and safe state.

The safety light curtain may only be used in accordance with its intended purpose as noncontact electro-sensitive protective equipment (ESPE) for securing sources of danger and hazardous areas on machines and plants.

Ensure that this device is used only in accordance with the technical specification described in these instructions. The device must not be used outdoors or in an explosion-hazardous area.

Plant design

Before selecting and using the product, an assessment must be made to determine whether this product is suitable for the intended application. Pepperl+Fuchs has no influence on the selection and use of this product. The warranty therefore only covers the consistent quality of the product.

Mounting and installation

If you install the device in safety-related applications, observe the requirements for functional safety.

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SLCT* and SLCT*/35 safety light curtains

Safety information

Operation, maintenance, repair

If you are operating the device in applications related to safety, note the requirements for functional safety.

Do not remove the nameplate.

Do not remove the warning markings.

Record the results of inspections and maintenance carefully.

Do not repair, modify, or manipulate the device.

If there is a defect, always replace the device with an original device.

Only use accessories specified by the manufacturer.

Delivery, Transport, Disposal

Keep the original packaging. Always store and transport the device in the original packaging.

The device, built-in components, packaging, and any batteries contained within must be disposed in compliance with the applicable laws and guidelines of the respective country.

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SLCT* and SLCT*/35 safety light curtains

Product Description

3Product Description

3.1Use and Application

Product description

The SLCT safety light curtain is noncontact electro-sensitive protective equipment (ESPE) for securing danger zones and hazardous areas.

The SLCT safety light curtain consists of a transmitter unit and receiver unit. The protection field is formed by infrared light beams sent from the transmitter unit to the receiver unit. The offset between the individual light beams determines the minimum obstacle size (14 mm, 30 mm, 60 mm, or 90 mm) that can be reliably detected in the entire protection field range.

The transmitter unit contains a certain number of transmitter diodes that emit protective beams. The number of transmitter diodes is determined by the protection field height and the size of the obstacle. The function mode A/B enables the use of 2 adjacent safety light curtains.

The receiver unit detects the transmission beams, controls the 2 OSSD (Output Signal Switching Devices) safety outputs and carries out tests to ensure safety.

In addition to the displays behind the front panel of the receiver unit, there is also a PNP output, which indicates operational readiness, a dirty lens, or fault states. If an internal fault occurs in the receiver unit, this output switches on and off at a frequency of 5 Hz. If an external fault occurs, this output switches on and off at a frequency of 1 Hz. If the received signal is too weak (e.g., due to a dirty lens), the output switches on and off at a frequency of 2.5 Hz.

The test input on the transmitter unit initiates a test sequence. Activate the input by applying 24 VDC to the input for a defined time span.

The relay monitor (RM) and restart (RI) inputs allow monitoring of the switching elements connected externally to the OSSDs and activation of the startup/restart interlock function.

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SLCT* and SLCT*/35 safety light curtains

Product Description

Transmitter unit

Receiver unit

Protection

24 V supply				24 V supply
24 V supply				24 V supply
Test				OSSDs
Test				OSSDs
Beam Code A/B				Status / Select RI-RM
Beam Code A/B				Status / Select RI-RM
				Restart Interlock (RI)
				Restart Interlock (RI)
				Relay Monitor (RM)
				Relay Monitor (RM)
				Beam Code A/B
				Beam Code A/B

Figure 3.1 Schematic diagram of a detection device

Product features

■Type 4 ESPE in accordance with IEC/EN 61496-1

■Self-testing

■Obstacle size, depending on type, 14 mm, 30 mm, 60 mm, 90 mm

■Protection field heights up to 1200 mm (SCLT14)

■Protection field heights up to 2400 mm (SLCT30, SLCT60, SLTS90)

■Protection field grids 100 mm (SLCT14, SLCT30)

■Protection field grids 300 mm (SLCT60, SLCT90)

■Selectable startup/restart interlock

■Selectable relay monitor

■Simple layout

■2 OSSDs

Further information about the product

The following information about the SLCT series is provided in the appendix at the end of this document:

Technical data: .

Available profile lengths/dimensions: see chapter 8.2.

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SLCT* and SLCT*/35 safety light curtains

Product Description

Dimensional drawings: see chapter 8.3.

Product characteristics by type code: see chapter 8.4.

Available accessories: see chapter 8.6.

3.2Indicators and Operating Controls

The transmitter has two LEDs to display its operating status. The receiver has five LEDs to display its operating status.

Transmitter		Receiver
		1
			1	Power	green
			2	Mode A/B, Status	yellow
			3	OSSD OFF	red
1	3	4	4	OSSD ON	green
1	3	4
			5	Restart/Status	yellow
2	5	6	6	Mode A/B	yellow

Figure 3.2	Displays on the transmitter and receiver units

No.	Designation	LED Color	Meaning

1	Power LED	Green	Transmitter and receiver units operating

2	A/B mode,	Yellow	Indicator flashing at 1 Hz: testing time
	status		exceeded
			or A/B mode input level change
			Indicator flashing at 5 Hz: internal fault

3	OSSD OFF	Red	OSSDs switched off

4	OSSD ON	Green	OSSDs switched on

5	Restart/status	Yellow	On: protection field free: system ready to
			start
			Indicator flashing at 1 Hz: external fault
			Indicator flashing at 2.5 Hz: insufficient
			functional reserve
			Indicator flashing at 5 Hz: internal fault

6	Mode A/B	Yellow	Off: mode A
			On: mode B

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SLCT* and SLCT*/35 safety light curtains

Product Description

3.3Interfaces and Connections

The electrical connections of the safety light curtain are made using M12 plug-in EN connectors. The transmitter has a 4-pin connector and the receiver an 8-pin plug-

in connector.

Connect the power supply and, depending on the application, the test signal to the transmitter unit. The mode can also be selected via the A/B mode input.

Connect the power supply, the fail-safe outputs (OSSD), the status/select output and the inputs for the startup enable, relay monitor and A/B mode to the receiver unit.

The housing profile is connected internally with approx. 2.3 MOhm// 33 nF each at +24 V and 0 V. Internal varistors limit any surges that occur at approx. 85 V. A separate grounding or connection between the housing and functional ground is not required.

Transmitter

Figure 3.3 Pin assignment transmitter unit

124 V DC

2Mode A/B

30 V DC

4Test

Receiver

8 1

3 5

Figure 3.4 Pin assignment receiver unit

1Restart Interlock (RI)

224 V DC

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SLCT* and SLCT*/35 safety light curtains

Product Description

3Relaismonitor (RM)

4Status / Select RI-RM

5OSSD 1

6OSSD 2

70 V DC

8Mode A/B

24 V

OSSD 1/2

0 V

3.4Scope of Delivery

The scope of delivery includes:

Scope of delivery: transmitter

■ Transmitter

Scope of delivery: receiver

■Receiver

■I/O Manual

■Test rod

Bracket and cable are not included in the scope of delivery. Visit www.pepperlfuchs.com for a selection of compatible fixing brackets and recommended cables.

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SLCT* and SLCT*/35 safety light curtains

Installation

4Installation

4.1Planning and Preparation

Warning!

Danger to life due to ineffective protective equipment

Improper or incorrect alignment, fixing, and connection to machine control can impair the effectiveness of the protective function.

■Note the applicable standards, guidelines, and legal regulations for the equipment of machine and plants with protective equipment.

■Position the protective equipment to prevent persons from being able to reach or walk behind it, climb over or under, or otherwise bypass the equipment in any way.

■Use appropriate safety distances to take into account the response times and lag times of the components in the safety chain.

■Secure the protective equipment against manipulation or deliberate deactivation.

Safety distance

A minimum distance must be maintained between the protection field and the danger zone to ensure potentially dangerous movements are brought to a stop before contact with a person is possible.

Danger zone

Minimum interval S

Sending unit

Receiving unit

Protective field

Figure 4.1 Minimum distance between protection field and hazardous area

This distance is calculated from the lag time of the machine, the response time of the safety system, and the speed of movement of the person entering the hazardous area (ISO/EN 13855).

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SLCT* and SLCT*/35 safety light curtains

Installation

To comply with the necessary distances in the event that the protection field
spreads, please refer to Table 1 of ISO/EN 13855 to check the minimum distance

for a vertically positioned protection field. If you read the value 0 from the table,
you can determine the minimum distance with the following formula:						EN
S = K x T + C
Where, for a protection field aligned vertically to the hazardous area:


S	Minimum safety distance in mm,
	i.e. the distance between hazardous area and protection field

K	Constant in mm/s for the speed of approach, based on the detection
	capacity of the sensor

T	Total response time of the protective equipment in s (T = t1 +t2)

t1	Response time of the protective equipment See the table below.
t2	Machine lag time

C	Additional distance in mm, see table

	Number of	14 mm	30 mm	60 mm	90 mm
	beams/res
	olution

		0 mm	128 mm	850 mm	850 mm

For any arrangements other than a vertical alignment of the protection field, see also
EN ISO 13855.

Response times of the safety light curtain

The safety light curtain response time is shown on the nameplate.

	Protec-
	tion
	field
	height
	[mm]	Response time [ms]

		SLCT1	SLCT3	SLCT3	SLCT6	SLCT6	SLCT9	SLCT9
		4-*	0-*	0-*/35	0-*	0-*/35	0-*	0-*/35

	100	11	8	9	-	-	-	-

	200	15	10	11	-	-	-	-

	300	19	11	12	9	10	8	8

	400	23	12	14	-	-	-	-

	500	26	14	16	-	-	-	-

	600	30	15	17	11	12	10	10

	700	34	16	19	-	-	-	-

	800	38	17	21	-	-	-	-

	900	42	19	23	13	15	11	11
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	1100	50	21	26	-	-	-	-
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SLCT* and SLCT*/35 safety light curtains

Installation

Protec-
tion
field
height
[mm]	Response time [ms]

	SLCT1	SLCT3	SLCT3	SLCT6	SLCT6	SLCT9	SLCT9
	4-*	0-*	0-*/35	0-*	0-*/35	0-*	0-*/35

1200	54	23	28	15	17	12	12

1300	-	24	30	-	-	-	-

1400	-	25	32	-	-	-	-

1500	-	26	33	17	20	14	14

1600	-	28	35	-	-	-	-

1700	-	29	37	-	-	-	-

1800	-	30	38	19	23	15	15

1900	-	32	40	-	-	-	-

2000	-	33	42	-	-	-	-

2100	-	34	43	21	25	16	16

2200	-	35	45	-	-	-	-

2300	-	37	47	-	-	-	-

2400	-	38	48	23	28	17	17

The switch-on time after beam interruption without a restart function is between 80 ms and 200 ms. The switch-on time depends on the number of protective beams.

Notes on setting up safety light curtains

The protective equipment must be arranged in such a manner that it is impossible to reach over, reach under, or walk behind the protection field. If the distance from the protective equipment is too great, additional protective equipment must be put in place (see illustration below).

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Pepperl Fuchs SLCT, SLCT 35 ORIGINAL INSTRUCTIONS

SLCT* and SLCT*/35 safety light curtains

Installation

Reaching over

The operator must not be able to reach over the protection field and into the hazardous area (A: protection field, B: mechanical protection).

Walking behind

The machine operator must not be able to walk between the light curtain and into the danger zone (A: protection field, B: mechanical protection).

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SLCT* and SLCT*/35 safety light curtains

Installation

4.2Mounting

Warning!

Danger to life due to ineffective protective equipment

Improper or incorrect alignment, fixing, and connection to machine control can impair the effectiveness of the protective function.

■Check the positioning of the protective equipment and ensure that it is not possible for persons to reach or walk behind it, climb over, under or otherwise bypass the protective equipment.

■Check the safety distances and the lag times of the components in the safety chain.

■Check that the protective equipment cannot be easily manipulated or disabled.

Various mounting materials for mounting to machines or in the field are available for securing the safety light curtain. See chapter 8.6.

If you are planning to install a safety light curtain with an increased detection range, we recommend using mounting profiles for floor mounting from our accessories range. See chapter 8.6.7.

Mounting

1.Align the transmitter and receiver units so that the two units are parallel with one another and at the same height.

2.Align the transmitter and receiver units parallel with one another.

3.The stability alarm indicator helps with correct alignment.

When installing the safety light curtain in a hazardous area, a minimum distance must be maintained between the protection field and the hazardous area. This distance will ensure that movements that pose a danger to a person can be brought to a stop before that person comes into contact with the source of danger.

The distance is calculated from the lag time of the machine, the response time of the safety light curtain, and the speed of movement of the person entering the hazardous area (EN ISO 13855, EN ISO 13857).

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