Wenglor SEFB Series Operating Instructions Manual
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Wenglor SEFB Series Operating Instructions Manual

Multi-beam safety light array
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SEFBxxx
Multi-Beam Safety Light Array
Operating Instructions
Translation of the Original Operating Instruction
Subject to technical changes
Available as PDF file only
Revision level: 06/09/2021
Doc. No.: 1038510
Version: 1.1.0
www.wenglor.com

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Summary of Contents for Wenglor SEFB Series

  • Page 1 SEFBxxx Multi-Beam Safety Light Array Operating Instructions Translation of the Original Operating Instruction Subject to technical changes Available as PDF file only Revision level: 06/09/2021 Doc. No.: 1038510 Version: 1.1.0 www.wenglor.com...

  • Page 2: Table Of Contents

    Table of Contents General Information Concerning these Instructions Target Group Explanations of Symbols Limitation of Liability Copyrights For Your Safety Use for Intended Purpose Use for Other than the Intended Purpose Personnel Qualifications Modification of Products Important Safety Precautions 2.5.1 Important Safety Precautions for Machine Manufacturers 2.5.2 Important Safety Precautions for Machine Operators...
  • Page 3 4.9.5 Path-Folding Mirrors 4.9.6 Safety Columns 4.9.7 IO-Link Master 4.9.8 T-Plug ZC7G001 (IO-Link Signal) 4.9.9 Muting Boom 4.9.10 Muting Connection Box ZFBB001 4.9.11 Laser Alignment Tool Z98G001 4.9.12 LED Light Strips Z99G001 4.9.13 microSD Card 4.9.14 Parametrization Software wTeach2 Project Engineering Engineering 5.1.1 Safety Field...
  • Page 4 5.2.4.6 Four Sensor Linear Muting with Time Monitoring 5.2.4.7 Muting Functions 5.2.4.7.1 Combinable Muting Functions 5.2.4.7.2 Muting Duration 5.2.4.7.3 Belt Stop Signal 5.2.4.7.4 Muting Enable 5.2.4.7.5 Direction Setting (Only for four sensor Muting) 5.2.4.7.6 Muting End Through Clearing of the ESPE 5.2.4.7.7 Partial Muting 5.2.4.7.8...
  • Page 5 Parameters Configuration General Preparation of the Parametrization Parametrization of the Emitter 9.3.1 Default Settings 9.3.2 Calling up the Menu (User Level “Admin”) 9.3.3 Menu Structure 9.3.4 Parametrization of the Range and Coding Parametrization of the receiver with basic function (without display) 9.4.1 Default Settings 9.4.2...
  • Page 6 11. Operation 11.1 Operating Display 11.1.1 Operating Displays Emitter 11.1.2 Control Panel Receiver SEFB 11.1.3 Operating Displays Receiver SEFB Muting 11.2 Calling Up the Current Parametrization (“Worker” User Level) 12. Servicing 12.1 Maintenance 12.2 Cleaning 12.3 Regular Inspections 12.4 Annual Inspection 13.
  • Page 7 16.3 Order Notes 16.4 EU Declaration of Conformity 16.5 Index of Changes 16.6 Index of Abbreviations 16.7 Index of Figures Multi-Beam Safety Light Array...

  • Page 8: General

    1.2 Target Group • These operating instructions are aimed at developers, planners, installers, owners and machine operators who want to safeguard their systems with safety technology from wenglor sensoric GmbH (referred to in the following as “wenglor”). • The instructions are also aimed at qualified specialist personnel, who are commissioning the SEFB multi- beam Safety Light Array for the first time, maintaining it or integrating it in a machine with accessories and additional products where applicable.

  • Page 9: Limitation Of Liability

    prepared.

  • Page 10: For Your Safety

    2. For Your Safety 2.1 Use for Intended Purpose The product is based on the following functional principle: Safety light arrays The light array monitors the safety field between the transmitter and the receiver. If the safety field is penetrat- ed by an object, a switching command is triggered.

  • Page 11: Use For Other Than The Intended Purpose

    • The product is not suitable for use in potentially explosive atmospheres. • The product may only be used with accessories supplied or approved by wenglor, or in combination with products approved by wenglor. A list of approved accessories and combination products can be accessed at www.wenglor.com on the product detail page.

  • Page 12: Important Safety Precautions

    • In the event of possible changes, the respectively current version of the operating instruc- tions can be accessed at www.wenglor.com in the product’s separate download area. • Read the operating instructions carefully before using the product.

  • Page 13: Approvals And Ip Protection

    2.7 Approvals and IP Protection RoHS 3. Product Description The SEFB safety light array is a piece of electro-sensitive protective equipment (ESPE) used to safeguard danger points, danger zones and accesses to machines. The ESPE monitors the safety field between the emitter and the receiver. When an object penetrates the safety field and one or multiple beams are interrupted, a switch command is triggered on both safety outputs.
  • Page 14 This product has the following properties: • ESPE type 4, per EN 61496-1 • PL e per EN ISO 13849-1 and SIL 3 per EN 62061 • Body protection: 2-, 3-, or 4-beam • 0.5 m to 50 m range •...

  • Page 15: Technical Data

    4. Technical Data 4.1 General Technical Data For US and Canada: Device to be supplied by a certified Class 2 power supply that complies with the require- ments according NEC and CEC. Order no. SEFB muting Order no. SEFB SEFB512 SEFB512 Emitter SEFB513...
  • Page 16 Order no. SEFB muting Order no. SEFB Protection class < 35 m/0.25 mm² Max. cable length** < 50 m/0.34 mm² < 72 m/0.50 mm² Safety outputs OSSD Safety outputs OSSD PNP semiconductor Number of safety outputs ≤ 300 mA Switching current safety output ≤...

  • Page 17: Response Times

    SEFB muting SEFB Functions Body protection Safety operating mode Restart inhibit Contactor monitoring Muting Cascading The following table specifies the tightening torques of the plugs and mounting options in order to assure compliant, error-free operation: Connection type Tightening torque (Nm) 4.2 Response Times SEFB muting SEFB...

  • Page 18: Housing Dimensions Safety Light Array

    4.4 Housing Dimensions Safety Light Array 4.4.1 SEFB Muting Drawing 1: SEFB412 (2 beams, 500 mm) Drawing 2: SEFB413 (3 beams, 400 mm) 1 = Emitter 2 = Receiver Technical Data...

  • Page 19: Sefb

    Drawing 3: SEFB414 (4 beams, 300 mm) Overall housing dimensions: 1=Emitter, 2=Receiver 4.4.2 SEFB Drawing 4: SEFB422 (2 beams, 500 mm) 1 = Emitter 2 = Receiver Multi-Beam Safety Light Array...
  • Page 20 Drawing 5: SEFB423 (3 beams, 400 mm) Drawing 6: SEFB424 (4 beams, 300 mm) 1 = Emitter 2 = Receiver Technical Data...

  • Page 21: Housing Dimensions, Mounting Technology

    4.5 Housing Dimensions, Mounting Technology Mounting bracket ZEFX001 • For attachment to the ends (top/bottom) of the ESPE • Scope of delivery: 1 piece • Including screws and washers Mounting bracket ZEFX002 • For attachment to the ends (top/bottom) of the ESPE •...
  • Page 22 Mounting bracket ZEFX003 • For attachment to the profile at the side of the ESPE • Installation in protection column Z2SSxxx • Scope of delivery: 2 pieces • Including screws, washers and slot nut Mounting bracket ZEMX001 • For wall/profile mounting •...

  • Page 23: Control Panel

    4.6 Control Panel The different operating and parametrization states of emitters and receivers are shown via the LEDs and the segment display (receivers SEFB muting only). 4.6.1 Control Panel Emitter LEDs Display Color Power Green (GN) Supply voltage CODE Yellow (YE) Beam coding HI RAN...

  • Page 24: Control Panel Receiver Sefb

    4.6.3 Control Panel Receiver SEFB LEDs Display Color OSSD (RD) Switching state OSSDs Green (GN) OSSD SIG LOW Yellow (YE) Weak signal ERROR (RD) SIG LOW Error RES confirmation Yellow (YE) ERROR CODE requirement Yellow (YE) Contactor monitoring CODE Yellow (YE) Beam coding 4.7 Scope of Delivery...

  • Page 25: System Overview

    4.8 System Overview Connection Equipment (Selection) Technology Mounting M12×1; 5-pin (Emitter) Straight, PVC S35G-5M ESPE at top/bottom ZEFX001* ZAS35R501 ESPE at slot in side ZEMX001 Straight, PUR ZC4L001 10 m ZEFX002 ESPE at top/bottom in protection column S35W-3M ZEFX003 Angled, PVC ESPE at slot in protection column S35W-5M Protection Column...

  • Page 26: Accessory Products

    4.9 Accessory Products 4.9.1 Mounting Elements Order no. Figure Material Assembly note ZEFX001 Plastic PA • Mounting on ends (top/bottom) of the ESPE (scope of delivery) ZEFX002 Plastic PA • Mounting on ends (top/bottom) of the ESPE • Installation in safety column Z2SSxxx ZEFX003 Stainless steel •...

  • Page 27: Connection Cables

    M12×1; 5-pin (PUR) Straight plug ZAS35R501 Emitter 10 m ZC4L001 M12×1; 5-pin (PVC) Angle plug Straight plug S35W-3M Emitter S35W-5M S35G-5M 4.9.3 Connection Cables M12×1; 8-pin (PVC) Straight plug Receiver BG88SG88V2-2M (cascading) Multi-Beam Safety Light Array...

  • Page 28: Safety Relays

    4.9.5 Path-Folding Mirrors Possible applications can be significantly expanded through the use of a path-folding mirror. The wenglor path-folding mirror can therefore secure a danger zone from several sides with just one ESPE. NOTE! The range of the ESPE is reduced by approximately 10% per utilized mirror.
  • Page 29 Application example    1 Emitter 2 Receiver 3 Safety column with path-folding mirror Z2SU00x Multi-Beam Safety Light Array...

  • Page 30: Safety Columns

    4.9.6 Safety Columns • The safety columns enable ESPE to be used in tough environments and protect them from mechanical damage. • The muting booms Z2MGxxx (see section 4.9.9, page 32) can also be mounted on the safety columns. • Floor or wall fastening is possible depending on the mounting used. Order number Installation space Housing material...

  • Page 31: Io-Link Master

    4.9.7 IO-Link Master Order number Interface EFBL001 EFBL003 EP0L001 ProfiNet, Ethernet/IP ZAI72AN01 Profibus 4.9.8 T-Plug ZC7G001 (IO-Link Signal) Connecting the T-plug to the receiver and connecting an IO-Link master EFBL003 enables the IO-Link connection of the device to be used. This guarantees the IO-Link signal extraction and enables the wTeach2 software to be used.

  • Page 32: Muting Boom

    4.9.9 Muting Boom • The wenglor muting sets enable quick initial start-up of muting solutions. • The sets contain all required components, pre-assembled on muting booms for implementing standard muting solutions. • The retro-reflex sensors P1KL020 are used as muting sensors, together with the reflector RE6040BA.
  • Page 33 Z2MG003 Further information can be found in the operating instructions for the muting sets. Multi-Beam Safety Light Array...

  • Page 34: Muting Connection Box Zfbb001

    4.9.10 Muting Connection Box ZFBB001 The muting connection box ZFBB001 is connected to the extension connection of the ESPE. The following functions can be implemented with the relevant parametrization of the ESPE: • Confirmation of restart inhibit and override (connection of a button) •...

  • Page 35: Laser Alignment Tool Z98G001

    5.2.5.6.1, page 79 4.9.14 Parametrization Software wTeach2 The wenglor software wTeach2 can be used for easy parametrization and status monitoring. The connection takes place via the IO-Link master EFBL003. Further information can be found in the operating instructions for the DNNF005.

  • Page 36: Project Engineering

    5. Project Engineering This chapter contains important information for correct integration of the ESPE in the machine. 5.1 Engineering 5.1.1 Safety Field     Sfb / range  = emitter  = receiver  = safety field  = beam Sfb = safety field width Project Engineering...

  • Page 37: Securing The Danger Zone

    Safety field The safety field is the area of the ESPE where an object (e.g. person or object) is detected according to the resolution / number of beams. Safety field width The safety field width is the clearance between the emitter and receiver. The safety field width must not change during operation.

  • Page 38: Safety Clearance

    5.1.3 Safety Clearance 5.1.3.1 General Information The safety clearance is the minimum distance between the safety field of an ESPE and the danger zone. It’s task is to prevent the danger zone from being reached before the hazardous motion is completed. In accordance with ISO 13855, the safety clearance is influenced by the following factors: •...
  • Page 39 Calculating the safety clearance for reaching over S If it is possible to reach over or under the safety field, the safety clearance S (safety clearance for access over the safety field) must be calculated. = K × T + C Safety clearance for access over the safety field RO = Reach over Approach speed with vertical safety field...
  • Page 40 a [mm] Height of the [mm] Additional horizontal clearance from the danger zone danger zone 2600 2500 2400 2200 2000 1800 1100 1100 1600 1150 1150 1100 1000 1400 1200 1200 1100 1000 1200 1200 1200 1100 1000 1000 1200 1150 1050 1150...
  • Page 41 Procedure when working with table (8.2.2): Required S  C Known a, S  C a, b S  C In the left column, Select the next smallest Select the next smallest search the row with the b-value b-value known value In the relevant row, In the relevant column, In the relevant column,...

  • Page 42: Minimum Clearance To Reflective Surfaces

    Step 1: Calculate safety clearance S = 1,600 mm/s × ( t ) + C S = 1,600 mm/s × (0.015 s + 0.015 s + 0.3 s) + 850 mm S = 1,378 mm Step 2: Determine the additional clearance C •...
  • Page 43 Distance between the Minimum clearance m emitter and receiver [m] [mm] 0.25 ... 3.0 1,310 1,746 2,183 m/mm = minimum clearance [mm] Sfb/m = clearance from emitter to receiver [m] Multi-Beam Safety Light Array...

  • Page 44: Functions

    5.2 Functions This section contains important information on the functions of the ESPE and their usage 5.2.1 Functions Overview Detailed descriptions of the individual functions can be found in the following sections. Section SEFB Muting SEFB Operational functions Safety operating mode / automatic restart Section 5.2.3.1 Restart inhibit (RES) Section 5.2.3.2...

  • Page 45: Combinable Functions

    5.2.2 Combinable Functions Safety operating mode / automatic restart Start-up disabling and restart inhibit  Contactor monitoring   Beam coding    Cascading     Muting (complete)      Partial muting   ...

  • Page 46: Operational Functions

    5.2.3 Operational Functions 5.2.3.1 Safety Operating Mode (Automatic Restart) In this operating mode, the switching outputs are disabled when the safety field is penetrated. The switching outputs are automatically enabled after interruption of the safety field is ended. A check must be carried out to determine whether safety operating mode is permitted for the application. WARNING! •...

  • Page 47: Contactor Monitoring (Edm)

    Note that: • The restart inhibit (RES) is parametrized on the receiver. • Enable via the signal sequence (RES input) 0  1  0 • The 1-signal must last for 0.1 s…4 s. • If the restart inhibit is deactivated, safety operating mode / automatic restart is activated automatically. 5.2.3.3 Contactor Monitoring (EDM) •...

  • Page 48: Range

    Note that: • The receiver only detects beams which correspond to its code. • The first and the last beam in the safety field act as synchronization beams. One synchronization beam is sufficient for the receiver to assign the coding and to synchronize the emitter and receiver. •...

  • Page 49: Cascading

    5.2.3.6 Cascading • ESPE can be connected so that they all drive a single safety output in order to monitor several safety fields simultaneously. • The fact that the safety fields of several ESPE drive a shared safety output simplifies the connection to the machine control.

  • Page 50: Cascading Via Extension Connection Of The Espe

    Example for determining the response time: • Cascading of 2× SEFB424 • Response time t = 15 ms Master • Response time t = 15 ms Slave • Response time t = 15 ms + 15 ms Casc Master Slave •...

  • Page 51: Cascading Of Other Safety Sensors With Ossd Outputs

    5.2.3.6.3 Cascading of Other Safety Sensors with OSSD Outputs WARNING! • Cascading safety sensors with OSSD outputs is not permitted. • If these sensors are used, incorrect signals may impair the safety function. 5.2.3.6.4 Cascading of Contact-based Safety Components WARNING! •...

  • Page 52: Muting

    5.2.4 Muting Muting is a function that safely bridges the ESPE for a short time so that objects can be moved through the safety field without the OSSDs switching off. The muting cycle is activated as soon as the responsible sensors detect an object. When arranging them, it is therefore important to ensure that the muting cycle can not be triggered by a person.
  • Page 53 (e.g. from a sensor). NOTE! • For easy initial start-up, wenglor offers muting sets (Z2MGxxx), which can be mounted directly on the ESPE or the safety column Z2SSxxx. • Further details are available in the standard IEC 62046.

  • Page 54: Muting Signals

    5.2.4.1 Muting Signals Muting signals are for • Detecting the material (object) to be transported • Forwarding the detection signal to the ESPE to activate muting • Detecting the removal of the object • Forwarding the free signal to the ESPE to deactivate muting Muting signals can be generated, for example, by: •...

  • Page 55: Muting Visualization

    5.2.4.2 Muting Visualization • The receivers have an integrated illuminated cap (see “5.2.5.4 Integrated Indicator Lamp” on page 77), which shows the muting status. • A continuous white light signals an active muting sequence. • It is also possible to connect an external muting lamp on the signal output. 5.2.4.3 Cross Muting Cross muting enables an object to be transported in or out of the danger zone.
  • Page 56 Calculating the minimum distance d ≥ v × (t ESPE d [m] Minimum distance between the detection points of the MS and the safety field of the ESPE (see Figure 4) v [m/s] Speed of the material on the conveyor line Processing time muting signals ESPE Is the time required by the ESPE for processing all muting signals.
  • Page 57 Valid muting sequence: Action Comments 1. Muting start MS1 and MS2 are activated Both sensors must be activated within a time frame of 4 seconds 2. Muting active MS1 and MS2, penetration of the The safety field is interrupted, the OSSDs safety field remain in the ON state 3.

  • Page 58: Two Sensor Linear Muting

    5.2.4.4 Two Sensor Linear Muting The two sensor linear muting enables the user to transport an object out of the danger zone. The two MS are located within the danger zone, so that it is not possible to activate the muting from outside the danger zone. Muting is active as soon as MS1 and MS2 are activated.
  • Page 59 Example: • Belt speed v = 0.5 • Processing time muting signals = 95 ms ESPE • Response time MS = 11 ms ≥ v ×(t )=0.5 ×(0.095+0.001)s = 0.048 m 1⁄2 ESPE The minimum distance between the two MS and the distance of the MS2 to the safety field of the ESPE is 48 mm.

  • Page 60: Four Sensor Linear Muting With Sequence Monitoring

    5.2.4.5 Four Sensor Linear Muting with Sequence Monitoring The four sensor linear muting with sequence monitoring enables the user to transport an object into or out of the danger zone. Two MS are located inside and two MS are located outside the danger zone. The distances a and b represent the distances between the muting object and a separating safeguard (fence).
  • Page 61 Calculating the minimum distance ≥ v × (t 1/2/3/4 ESPE Minimum distance between MS1 and MS2 (see figure 8) Minimum distance between MS2 and safety field of the ESPE (see figure 17) Minimum distance between the safety field of the ESPE and MS3 (see figure 17) Minimum distance between MS3 and MS4 (see figure 17) Size of the muting range (see figure 17) v [m/s]...
  • Page 62 Valid muting sequence: Action Comments 1. Muting start MS1 is activated first, followed by MS2. 2. Muting active MS1 and MS2 active, penetration of The safety field is interrupted, the OSSDs the safety field (muting object moves remain in the ON state. through ESPE).

  • Page 63: Four Sensor Linear Muting With Time Monitoring

    5.2.4.6 Four Sensor Linear Muting with Time Monitoring The four sensor linear muting with time monitoring enables an object to be transported into or out of the dan- ger zone. Two MS are located inside and two MS are located outside the danger zone. The distances a and b represent the distances between the muting object and a separating safeguard (fence).
  • Page 64 Calculating the minimum distance ≥ v × (t 1/2/3/4 ESPE Minimum distance between MS1 and MS2 (see Figure 10) Minimum distance between MS2 and safety field of the ESPE (see Figure 10) Minimum distance between the safety field of the ESPE and MS3 (see Figure 10) Minimum distance between MS3 and MS4 (see Figure 10)
  • Page 65 Valid muting sequence: Action Comments 1. Muting start MS1  MS2 are active Both sensors must be activated within a time frame of 4 seconds. 2. Muting active MS1  MS2 are active  penetration The safety field is interrupted, the OSSDs of the safety field remain in the ON state.

  • Page 66: Muting Functions

    5.2.4.7 Muting Functions 5.2.4.7.1 Combinable Muting Functions Signal input and configuration Parameters configuration Muting types Cross muting − − − Two sensor linear − − − muting four sensor linear − − − muting with se- quence monitoring four sensor linear −...

  • Page 67: Belt Stop Signal

    5.2.4.7.3 Belt Stop Signal The parameterizable “belt stop signal” function enables a high system availability for applications where the conveyor belt is stopped operationally. It stops the muting sequence temporarily. To this end, if there is an active signal on the “belt stop signal” input, the timers that monitor the initiation and maintenance of the muting sequence are paused.

  • Page 68: Muting Enable

    5.2.4.7.4 Muting Enable The “Muting Enable” function is intended to provide added safety for the user when working with muting. If the function is activated during parametrization, the “Muting Enable” input is evaluated. The muting can now be enabled or blocked using the external Muting Enable signal. If the Muting Enable input is active, muting is initiated with a valid muting sequence.

  • Page 69: Direction Setting (Only For Four Sensor Muting)

    5.2.4.7.5 Direction Setting (Only for four sensor Muting) This function increases the safety during muting by specifying and checking the sequence of the activation and deactivation of the MS. If an object passes through the safety field in a direction other than the one de- fined, the muting cycle is not initiated.

  • Page 70: Partial Muting

    5.2.4.7.7 Partial Muting The “Partial Muting” function can be used to secure the danger zone even more effectively. With this ap- proach, only part of the ESPE (e.g. at object height) is hidden within a valid muting sequence, while the other light beams remain permanently active and cause the OSSDs to be switched off if interrupted.

  • Page 71: Full Muting Enable

    5.2.4.7.8 Full Muting Enable For applications where the object height varies, the muting can be extended to the total safety height of the ESPE at specific times with the “Full Muting Enable” function. This function should only be used if “Partial Muting”...

  • Page 72: Gap Suppression

    5.2.4.7.9 Gap Suppression For transport items with gaps, brief interruptions in the muting signal are to be expected. The “gap suppres- sion” function ensures that a brief interruption in the detection does not result in the muting being terminated. If the function is activated, interruptions of up to 250 ms are accepted in the signal from a MS. DANGER! •...
  • Page 73 The following figure shows a sample signal sequence during override. Input ”override” penetration Override active Figure 16: Signal sequence with override DANGER! • There must be no persons in the danger zone during override. • The entire danger zone must be clearly visible by the operator during the override. NOTE! •...

  • Page 74: Non-Safety-Related Functions

    5.2.5 Non-Safety-Related Functions 5.2.5.1 Measuring Function • Different measuring functions can be used on the device for controlling system parts, for example. This enables muting parts to be measured or their size checked, among other things. • The recorded process data can be accessed via IO-Link. The following values (see following figure) can be determined via the measuring function: •...
  • Page 75 Example of the measuring function NCBB NCBB NCBB NCBB FBB – First Beam Blocked Beam no. 2 Beam no. 1 LBB – Last Beam Blocked Beam no. 3 Beam no. 3 NBB – Numbers of Beams Blocked NCBB – Numbers of Cumulated 1 beam Beams Blocked NOBJ –...

  • Page 76: Display Settings

    5.2.5.2 Display Settings • The display setting can be adjusted so that it does not interfere during operation (e.g. at manual work sta- tions). • The following settings can be selected: Standard Energy saving mode LEDs Always active according to Always active according to status status Activation segment display...

  • Page 77: Integrated Indicator Lamp

    5.2.5.4 Integrated Indicator Lamp • The receiver of the ESPE has a transparent end cap with integrated indicator lamp. • Depending on the parameter configuration and sensor, the different status of the ESPE is shown depending on the situation. The integrated indicator lamp is not monitored. This means that an indicator lamp failure has no impact on the function of the ESPE.

  • Page 78: Memory Function

    5.2.5.6 Memory Function • The ESPE can be expanded with a microSD memory card (complementary accessories), which can be read and written on. • This enables a parameter configuration to be transferred from the memory card to the ESPE and a parame- ter configuration for a ESPE to be saved on the memory card.

  • Page 79: Access To The Memory Card

    • File system: type FAT32 • The microSD card can be removed/replaced at any time (without impairing operation) • Preferred type (wenglor order no.): ZNNG013 5.2.5.6.3 File System The following instructions must be followed to guarantee successful use of the microSD card: •...

  • Page 80: Password Protection

    • The ESPE (e.g. SEFB412) always saves the file in the top level of the microSD card. Name Type File folder File folder HEX file HEX file • Multiple files from different ESPE (e.g.: SEFB412.hex, SEFB413.hex) can be saved in the parent folder. •...

  • Page 81: Io-Link Interface (C/Q)

    5.2.5.8 IO-Link Interface (C/Q) IO-Link is a standardized communication system for connecting intelligent sensors and actuators to an auto- mation system. This takes place via a point-to-point connection. The IO-Link interface in the SEFB has the following function for the user: •...

  • Page 82: Transport And Storage

    6. Transport and Storage 6.1 Transport • Upon receipt of shipment, inspect the goods for damage in transit. • In the case of damage, conditionally accept the package and notify the manufacturer of the damage. • Then return the device, making reference to damage in transit. 6.2 Storage The following points must be taken into consideration with regard to storage: •...

  • Page 83: Installation

    • When installing the ESPE, it must be taken into account that the safety field width must not change when the ESPE is active. • Only mounting elements recommended by wenglor may be used for installation. DANGER! Risk of safety device failure Persons or body parts may not be detected or not detected in time if the instruction is not followed.

  • Page 84: Positioning The Espe

    7.1 Positioning the ESPE The following points must be observed when aligning the ESPE: Same mounting height • The emitter and receiver must be mounted parallel to each other and at the same mounting height. Parallel alignment • The emitter and receiver must be mounted so that a rectangular safety field is formed.
  • Page 85 Multiple systems must not influence each other • Receiver Emitter Emitter Receiver • With multiple systems, it is important to ensure that a receiver is only reached by the light from the corresponding emitter. • This can be guaranteed with the following measures: –...

  • Page 86: Installation With Mounting Bracket

    7.2 Installation with Mounting Bracket • Protect the product from contamination during installation. • Observe all applicable electrical and mechanical regulations, standards, and safety rules. • Protect the product against mechanical influences. • Make sure that the sensor is mounted in a mechanically secure fashion. •...

  • Page 87: Installation With Mounting Bracket Zefx002

    7.2.2 Installation with Mounting Bracket ZEFX002 Figure 20: Installation with ZEFX002 7.2.3 Installation with Mounting Bracket ZEFX003 Figure 21: Installation with ZEFX003 Multi-Beam Safety Light Array...

  • Page 88: Installation With Mounting Bracket Zemx001

    7.2.4 Installation with Mounting Bracket ZEMX001 Figure 22: Installation with ZEMX001 7.2.5 Warning Strips • Both the emitter and the receiver of the ESPE have a yellow warning strip in a side groove. • If mounting is to take place over the side groove (see section 7.2.2, page 87, section 7.2.3, page 87, section 7.2.4, page 88), it may be positioned on the wrong side depending on the installation situation.

  • Page 89: Electrical Connection

    8. Electrical Connection DANGER! Hazardous machine state Failure to comply poses risk of fatal injury! • No hazardous motions must be possible during installation, electrical connection and initial start-up. • It is important to ensure that the OSSDs of the ESPE have no impact on the machine during installation, electrical connection and initial start-up.
  • Page 90 System connection Receiver Emitter Extension connection (only with SEFB muting) Receiver E1 (MS3 / belt stop / Full Muting Enable) E2 (MS4 / Muting Enable) E3 (MS1) E4 (MS2) RES / Override NOTE! Pin 1 and Pin 3 on the extension connection are only intended for supplying muting sensors or cascaded receivers (see EN 61496-1, Paragraph 7 a).
  • Page 91 The inputs of the extension connection have the following assignment with muting connection box ZFBB001: Input Input E1 Input E2 Input E3 Input E4 Input E5 Function MS3 / MS3 / MS4 / Muting RES / override belt stop / Full Enable / cas- Muting Enable / cading...

  • Page 92: Parameters Configuration

    9. Parameters Configuration 9.1 General The parameters configuration of the ESPE can be carried out via: • Keys on the emitter (see section 9.3, page 92) and receiver (see section 9.4, page 95) • IO-Link interface (see section 9.6, page 121) The following applies invariably: •...

  • Page 93: Default Settings

    9.3.1 Default Settings Function Default settings Beam coding Coding OFF Range High Range 9.3.2 Calling up the Menu (User Level “Admin”) • The configuration menu can be called up from the RUN mode, as well as from error mode. • To prevent unintentional parameter configurations, the call-up of the configuration menu is divided into the following steps: 1.

  • Page 94: Menu Structure

    9.3.3 Menu Structure The menu is laid out as follows: Range HI RANGE Encoding CODE 9.3.4 Parametrization of the Range and Coding • The “Menu down” key ( ) can be used to switch between the two settings (range/coding). • The “Apply” key ( ) changes the setting within the menu item: –...

  • Page 95: Parametrization Of The Receiver With Basic Function (Without Display)

    NOTE! • When setting the beam coding, the parameters must be configured on both the emitter and receiver (see section 9.5.4, page 102). • To deactivate the beam coding, it must be deactivated on both the emitter and receiver (see section 9.5.4, page 102).

  • Page 96: Menu Structure

    CODE OSSD SIG LOW ERROR Figure 26: Timing diagram receiver for calling up the menu 9.4.3 Menu Structure The menu is laid out as follows: Restart inhibit HI RANGE Contactor Monitoring Encoding CODE Parameters Configuration...

  • Page 97: Parametrization Of The Restart Inhibit, Contactor Monitoring And Coding

    9.4.4 Parametrization of the Restart Inhibit, Contactor Monitoring and Coding • The “Menu down” key ( ) can be used to switch between the settings. • The “Apply” key ( ) changes the setting within the menu item: – Restart inhibit: Switch between restart inhibit and contactor monitoring –...

  • Page 98: Parametrization Of The Receiver With Muting (With Display)

    9.5 Parametrization of the receiver with muting (with display) The parameter configuration directly on the sensor takes place via the push buttons on the control panel. Receiver Menu down Menu up Apply NOTE! • If the parameter configuration is interrupted (e.g. due to an interruption in the power supply), this causes the newly selected settings to be lost.
  • Page 99 Level 0 Level 1 Level 2 Level 3 Level 4 300S TIME   STOP*   ENAB*  CODE  DIRE**  ESPE CASC END***   Txxx PART T-IN   MUTG LSEQ LTME FULL*   GAPS ...
  • Page 100 Level 0 Level 1 Level 2 Level 3 OSSD DISP ENRG  CONT SYNC  SIGN LAMP  EXPT RSET <I> CARD  PASS  <R>  SAVE LOAD  SAVE CANC Input CHAN    Display Standard Acknowledgment prompt DISP EXPT Expert Menu...

  • Page 101: Parametrization Of The Restart Inhibit (Res)

    9.5.2 Parametrization of the Restart Inhibit (RES) • For more information on the restart inhibit function, see Section “5.2.3.2 Start-Up Disabling and Restart Inhibit (RES)” on page • The following steps are used for activation or deactivation: Selec- Selec- OSSD Search RES Switch on tion...

  • Page 102: Parametrization Of The Beam Coding (Code)

    1. Acknowledge the EDM mode by pressing the 2. Choose from “ON”, “OFF” and “<---” using the key. The parameters to be selected are shown flashing. 3. Acknowledge the selection by pressing the key. 4. A selected parameter is displayed for approx. 2 s, before the display switches back to the upstream level. 9.5.4 Parametrization of the Beam Coding (CODE) •...

  • Page 103: Parametrization Cascading (Casc)

    9.5.5 Parametrization Cascading (CASC) • For more information on the cascading function, see section 5.2.3.6, page • The following steps are used for activation or deactivation: Search OSSD Selection Switch on Selection CASC SIG LOW ERROR OSSD OSSD Switch off ...

  • Page 104: Parametrization Muting (Mutg)

    9.5.6 Parametrization Muting (MUTG) • For more information on the muting function, see section 5.2.4, page • The following steps are used for activation or deactivation: Search OSSD Selection Switch off Selection MUTG SIG LOW ERROR OSSD OSSD Cross muting ...

  • Page 105: Parametrization Cross Muting (X)

    9.5.6.1 Parametrization Cross Muting (X) • For general information on the cross muting function, see section 5.2.4.3, page • All settings under the muting function must be carried out in one go. If the cross muting menu item is called up again, the parameter configurations must be set again for the desired options.
  • Page 106 c) Muting enable Switch on • The muting can be enabled or blocked using the external Muting Enable signal. OSSD – ON: Muting enable activated. The input is evaluated and is SIG LOW OSSD required for initiating muting. ERROR SIG LOW –...
  • Page 107 f) Full Muting Enable Switch on • The “Full Muting Enable” function is suitable for use, in conjunc- tion with “partial muting”, for applications where the object height OSSD varies. SIG LOW OSSD – ON: Partial muting is lifted when a signal is applied and muting ERROR SIG LOW acts on the entire safety field height.

  • Page 108: Parametrization Two Sensor Linear Muting (2L)

    NOTE! • Activating the cross muting function deactivates: – Two sensor linear muting, – four sensor linear muting, – Direction setting • Activating belt stop deactivates Full Muting Enable. • Activating Full Muting Enable also deactivates belt stop. 9.5.6.2 Parametrization Two Sensor Linear Muting (2L) •...
  • Page 109 c) Muting enable Switch on • The muting can be enabled or blocked using the external Muting Enable signal. OSSD – ON: Muting enable activated. The input is evaluated and is SIG LOW OSSD required for initiating muting. ERROR SIG LOW –...
  • Page 110 f) Gap suppression Switch on • For transport items with gaps, brief interruptions in the muting signal are to be expected. The “gap suppression” function pre- OSSD vents this from ending the muting function. SIG LOW OSSD – ON: The muting signals (MS1...MS4) are delayed by 250 ms. ERROR SIG LOW –...

  • Page 111: Parametrization Four Sensor Linear Muting With Sequence (Lseq) Or Time Monitoring (Ltme)

    9.5.6.3 Parametrization Four Sensor Linear Muting with Sequence (LSEQ) or Time Monitoring (LTME) • For general information on four sensor linear muting with sequence monitoring, see section 5.2.4.5, page , or section 5.2.4.6, page 63 for four sensor linear muting with time monitoring. •...
  • Page 112 c) Muting end through clearing of the ESPE Activate • The “Muting end through clearing of the ESPE” function deter- mines which signal initiates the end of the muting process. OSSD – ESPE: Muting is ended immediately after the safety field is SIG LOW OSSD cleared.
  • Page 113 f) Override Switch on • The “override” function enables a stopped object to be removed from the muting area. OSSD • This can be necessary if a valid muting sequence is interrupted SIG LOW OSSD (due to a conveyor belt stop, for example). ERROR SIG LOW –...

  • Page 114: Setting The Display (Disp)

    9.5.7 Setting the Display (DISP) • The display can be operated in either standard mode or energy saving mode. • The setting is carried out in the following steps: OSSD Search DISP Selection Standard mode Selection SIG LOW ERROR OSSD OSSD Energy saving mode ...

  • Page 115: Expert Menu (Expt)

    9.5.8 Expert Menu (EXPT) • Advanced settings can be made in the expert menu. • The setting is carried out in the following steps: OSSD Search EXPT Selection Signal output Selection SIG LOW ERROR OSSD OSSD Indicator lamp   ...
  • Page 116 The parameter configuration of the different expert settings is described in the following table: a) Signal output Deactivate • Pin 6 of the IO-Link output is on the system connection of the receiver. If IO-Link communication is not active, this output can OSSD alternatively be used as a signal output.
  • Page 117 b) Indicator lamp Muting • The parameters for the integrated indicator lamp function can be configured by selecting LAMP . OSSD – MUT: Muting state display SIG LOW OSSD – ALL: Muting and OSSD state displa. ERROR SIG LOW • For more information on the indicator lamp, see section 5.2.5.4, ERROR page 77.
  • Page 118 e) Memory card Save • If a memory card is inserted, the following options are available: – SAVE: Saves the parameter configuration most recently saved OSSD in the sensor memory to the memory card (see section 9.5.9, SIG LOW OSSD page 120).
  • Page 119 Load • The parameter configuration saved on the memory card is loaded using the following steps: 1. Load the parameter configuration from the memory card: Expert Selection Memory card Selection Load settings OSSD OSSD OSSD     SIG LOW SIG LOW SIG LOW ERROR...

  • Page 120: Saving The Configuration And Restart (Run)

    To change the password, proceed as follows: Change PW Selection Selection Change with Change with OSSD OSSD OSSD  1. digit  2. digit …   SIG LOW SIG LOW SIG LOW ERROR ERROR ERROR … Selection Confirmation Selection If all 4 digits have been entered OSSD...

  • Page 121: Parametrization Via The Io-Link Interface

    NOTE! The latest versions of the software, IODD and the interface protocol are available on the wenglor homepage in the download area for the product. If the connection is successful, the following operating displays are shown during the parameter configuration via IO-Link (see section 11.1.1, page 131...
  • Page 122 Segment display: Digit 1 Digit 2 Digit 3 Digit 4 NOTE! The parameter configuration on the control panel (see section 9.3, page 92, section 9.4, page 95) always has priority over setting via IO-Link. Parameters Configuration...

  • Page 123: Process Data

    9.6.2 Process Data The following process data is output cyclically by the ESPE: Process data Description OutputState Output status of the ESPE 8 bit encrypted InputState Status of the inputs (RES, EDM, MS1–MS4, cascading) 8 bit encrypted Parameter set A Parameter set B Measuring function Muting...

  • Page 124: Parameter Data

    9.6.3 Parameter Data NOTE! • To prevent impermissible or unintentional changes to the ESPE, a password must be entered to carry out a parameter configuration (see section 5.2.5.7, page 80) • Setting parameter data requires user level “Admin”. • There is only one password for the ESPE, regardless of whether the setting takes place on the control panel or via IO-Link.

  • Page 125: Example For Setting The Parameter Data

    NOTE! • Due to the different dependencies between the functions, it is not possible to make block changes to parameters. This means that each parameter must be written individually to the ESPE. • When changing a parameter, the data should be loaded again so that all changes are visible for any other parameters (marked in color depending on the master).

  • Page 126: Data Storage

    The following procedure must be followed for changing the parameter configuration via IO-Link 1. Reset memory parameters, as block writing is not possible • ParamEnd “Save + Restart”  delete or update 2. Password entry • PasswordParamEntry: “0000” (current password)  “write”. •...

  • Page 127: Initial Start-Up

    10. Initial Start-Up DANGER! Hazardous machine state • No hazardous motions must be possible on the machine during installation, electrical connection and initial start-up. • It is important to ensure that the OSSDs of the ESPE have no impact on the machine during installation, electrical connection and initial start-up.

  • Page 128: Aligning The Emitter And Receiver

    10.3 Aligning the Emitter and Receiver Alignment display for SEFB • The alignment quality is indicated by LED SIG LOW for easy alignment of emitter and receiver. • This display is also available in normal operation and lights up with the relevant alignment. Display Meaning Explanation...
  • Page 129 Alignment display for SEFB muting • The signal strength is shown on the segment display for easy alignment of the emitter and receiver. • This feature is active automatically for 30 s after switch-on. • During parameters configuration, the display can be shown for a lengthy period of time (up through time- out) (see section 9.5.8, page 115).

  • Page 130: Check For Initial Start-Up

    NOTE! wenglor offers a suitable laser alignment tool Z98G001 to make a reliable alignment easier even with large distances (see section 4.9.11, page 35). 10.4 Check for initial start-up • The described tests are intended to confirm compliance with national / international safety regulations.

  • Page 131: Operation

    11. Operation 11.1 Operating Display • Information on the status of the ESPE is output via the operating displays. • For diagnostic information for the ESPE, see section 13, page 141. • Status and diagnostic information can also be read out for IO-Link. Relevant information can be found in the interface protocol of the ESPE.

  • Page 132: Control Panel Receiver Sefb

    11.1.2 Control Panel Receiver SEFB The following status displays can be read off in normal operation: OSSD SIG LOW ERROR CODE LEDs Display Explanation LED 1 lit, OSSD The OSSDs are in OFF state. LED 2 off OSSD LED 1 off, OSSD The OSSDs are in ON state.

  • Page 133: Operating Displays Receiver Sefb Muting

    11.1.3 Operating Displays Receiver SEFB Muting The following status displays can be read off in normal operation: OSSD SIG LOW ERROR Display Explanation LED 1 lit, OSSD The OSSDs are in OFF state LED 2 off OSSD LED 1 off, OSSD The OSSDs are in ON state LED 2 lit...
  • Page 134 The display is laid out as follows: Digit 1 Digit 2 Digit 3 Digit 4 Status displays for muting • If muting is parametrized, information on the current muting sequence and diagnostic information can be read off the segment display. •...

  • Page 135: Calling Up The Current Parametrization ("Worker" User Level)

    Examples: Signal is applied on E1 and E2, muting is active. E.g.: Active four sensor muting, where the object is activating two MS Signal is applied on E3 and E4. E.g.: Cross muting was deactivated due to clearing of the ESPE (parametrized in ESPE), even though the object is still activating two MS.
  • Page 136 OSSD SIG LOW ERROR Display 1 Display 2 Display 3 Display 4 Display 1 Restart inhibit Contactor monitoring Cascading Beam coding Operating functions As displayed in the CASC CODE menu tree × × × × × × × × × ×...
  • Page 137 Display 2 Full resolution Fix blanking Fix blanking Reduced resolution Float blanking Operating with edge toler- The resolution is The tolerance between mode ance reduced by … the minimum and maxi- mum object size is … As displayed BLNK OFF FIXT REDU in the menu...
  • Page 138 Display 3 Muting mode function Muting options Muting mode Cross 2-sensor 4-sensor 4-sensor Maximum Muting Belt stop function muting linear muting linear linear muting long muting enable function muting with with time duration function sequence monitoring (8 hours) monitoring As displayed in LSEQ LTME TIME...

  • Page 139: Servicing

    • No repairs may be carried out on the ESPE. • No changes or manipulations may be carried out on the ESPE. 12.1 Maintenance NOTE! • This wenglor sensor is maintenance-free. • The instructions for the annual (see section 12.4, page 140) and regular inspection (see Section 11.3, page...

  • Page 140: Regular Inspections

    12.3 Regular Inspections • The described checks are intended to confirm compliance with national / international safety regulations. NOTE! • Regulations governing operator induction by specialist personnel must be observed before work is commenced. • The company which operates the machine is responsible for training. •...

  • Page 141: Diagnosis

    • Analyze and remedy the cause of the error based on the diagnosis information (see sec- tion 13.2, page 141). • If the error cannot be eliminated, contact wenglor’s support department (see the wenglor homepage for contact details). DANGER! Risk of personal injury or property damage in case of non-compliance! The system’s safety function is disabled.

  • Page 142: Error Indicator On The Receiver Sefb

    LED off LED off LED lit Internal error dance with section 9.3, page 92 • Contact the wenglor support de- partment if the error occurs again • Remove the interfering emitter CODE ERROR Error ambient light • Check for and remove any other...

  • Page 143: Diagnosis Codes On The Receiver Sefb Muting

    13.3 Diagnosis Codes on the Receiver SEFB Muting • A precise analysis of the current status of the ESPE is possible via the code on the 4-digit segment display on the receiver. • The following overviews describe the codes and measures for removing errors. 13.3.1 Codes for Information and Warnings Code Status...
  • Page 144 E 013 Emitter / Permanent Supply voltage too high Make supply voltage receiver available within the speci- fied limits E 020 Receiver Permanent OSSD A: Short to posi- Resolve short to positive tive/ capacity too high E 021 Receiver Permanent OSSD A: Short to posi- Resolve short to positive tive/ capacity too high...
  • Page 145 • Internal error • Disconnect the power supply and restart the E 2xx receiver ESPE. • If this error occurs repeatedly, contact the wenglor support department. E126 Receiver Permanent • SD card present but file • Write SD card again is damaged...

  • Page 146: Codes For Muting Errors

    13.3.3 Codes for Muting Errors • The following codes are displayed until a muting cycle is initiated. • The first message to occur is always shown. Code Description/cause Measures Runtime error muting Restart muting and check the sequence. Time exceeded when initiating muting Time exceeded when initiating the Restart muting and check the sequence.

  • Page 147: Codes When Accessing The Memory Card

    • The ESPE neither contains nor gives off any environmentally harmful substances. It consumes minimum amounts of energy and resources. 15. Proper Disposal • wenglor sensoric GmbH does not accept the return of unusable or irreparable devices. • Respectively valid national waste disposal regulations apply to product disposal. Multi-Beam Safety Light Array...

  • Page 148: Appendix

    16. Appendix 16.1 Checklists 16.1.1 Checklist Initial Start-up NOTE! • This checklist is intended to provide assistance during initial start-up. • This checklist does not replace the checks before initial start-up, nor the regular checks on the part of specialized personnel. Standards and guidelines;...

  • Page 149: Checklist Annual Inspection

    Functionality Is the ESPE effective during the entire duration of the machine’s hazardous motion?. When the ESPE is disconnected from the supply voltage, is the hazardous motion stopped and does the acknowledgment key need to be pressed to reset the machine after the supply voltage is restored? If a hazardous state has been initialized, is it stopped when the ESPE is switched off, if the operating mode or any of the function types are changed, or if switching to another...

  • Page 150: Regular Inspection Checklist

    16.1.3 Regular inspection checklist The ESPE is free from visible damage. The lens cover is not scratched or contaminated. The danger zone is only be accessible via the ESPE’s safety field. Cables, plugs and mounting are in flawless condition. Checking the effectiveness of the ESPE: •...

  • Page 151: Connection Examples

    16.2 Connection Examples 16.2.1 Connection Example Start-Up Disabling and Restart Inhibit • Start-up disabling and restart inhibit RES via ESPE • No contactor monitoring EDM • Connection to safety relay SR4B3B01S Multi-Beam Safety Light Array...

  • Page 152: Connection Examples Muting

    16.2.2 Connection Examples Muting • Start-up disabling and restart inhibit RES via ESPE • Connection to safety relay SR4B3B01S • Connection of the necessary muting components via the extension connection NOTE! Quick electrical connection of the muting components is possible via the muting sets (incl.
  • Page 153 Muting with connection box ZFBB001  Two sensor muting     Port 6 Port 4 Port 2  Port 5   Port 3 Port 1 F-SPS Receiver SEFBxxx Emitter SEFBxxx Connection line M12×1; 4/5-pin Connection line M12×1; 8-pin ZFBB001 Connection Box MS with connection cable on M12×1;...
  • Page 154 Muting configuration with connection box ZFBB001  Two sensor muting with additional signal     Port 6 Port 4 Port 2  Port 5   Port 3 Port 1 F-SPS   Receiver SEFBxxx Emitter SEFBxxx Connection line M12×1; 4/5-pin Connection line M12×1;...
  • Page 155  Muting configuration with connection box ZFBB001 Four sensor muting     Port 6 Port 4 Port 2  Port 5   Port 3 Port 1 F-SPS   Receiver SEFBxxx Emitter SEFBxxx Connection line M12×1; 4/5-pin Connection line M12×1;...

  • Page 156: Connection Examples Cascading

    16.2.3 Connection Examples Cascading  Cascading of 1 master and 1 slave system      F-SPS   Receiver SEFBxxx MASTER Emitter SEFBxxx MASTER Connection line M12×1; 4/5-pin Connection line M12×1; 8-pin Connection cable BG88SG88V2-2M Receiver SEFBxxx SLAVE Emitter SEFBxxx SLAVE Connection line M12×1;...
  • Page 157  Cascading and muting with connection box ZFBB001      F-SPS     Port 6 Port 4 Port 2 Port 5 Port 3 Port 1 Receiver SEFBxxx MASTER Emitter SEFBxxx MASTER Connection line M12×1; 4/5-pin Connection line M12×1;...
  • Page 158 SEFB413 SEFB513 SEFB613 SEFB414 SEFB514 SEFB614 16.4 EU Declaration of Conformity The EU declaration of conformity can be found on our website at www.wenglor.com in the product’s separate download area. 16.5 Index of Changes Version Date Description / change 1.0.1 07.08.2019...
  • Page 159 16.6 Index of Abbreviations Version Description / change Height of the danger zone Height of the top edge of the safety field ESPE Electro-sensitive protective equipment Margin for the safety clearance Margin for the safety clearance for access over the safety field Margin for the safety clearance for access through the safety field Resolution of the ESPE or minimum distance for muting structures External Device Monitoring (contactor monitoring)
  • Page 160 SIL CL Safety Integrity Level Claim Level F-PLC Failsafe control Total response time Response time of the ESPE Response time of the safety switching device Response time of the machine ESPE processing time of all signals ESPE Response time of the muting sensors Appendix...
  • Page 161 16.7 Index of Figures Figure 1: Product structure Figure 2: Relationship between C and S Figure 3: Arrangement cross-muting with retro-reflex sensors Figure 4: Signal path during cross-muting Figure 5: Arrangement two sensor linear muting Figure 6: Signal path with two sensor linear muting Figure 7: Arrangement four sensor linear muting with sequence monitoring Figure 8: Signal path for the four sensor linear muting with sequence monitoring Figure 9: Arrangement four sensor linear muting with time monitoring...

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