TURCK Y1 Capacitive Safety Sensors User Manual

TURCK Y1 Capacitive Safety Sensors

Product Information

The Y1 Capacitive Safety Sensors are designed and manufactured by Hans Turck GmbH & Co. KG. These sensors are part of their product line for global automation solutions. The sensors are built to ensure safety in various applications and are suitable for use in safety-related environments.

Features

• Capacitive safety sensors
• Designed for safety-related applications
• Compliant with general safety regulations
• Includes safety functions and operating modes
• Provides recurrent function tests
• Durable and reliable
• Easy installation and commissioning
• Suitable for troubleshooting, maintenance, and repair

Target Groups

This safety manual is intended for use by suitably qualified and trained personnel. It is essential to read and follow the instructions in this manual if you are involved in any of the following tasks:

• Unpacking and mounting
• Commissioning
• Setting
• Testing and maintenance
• Troubleshooting
• Disassembly and disposal

About this safety manual

DANGER
Malfunction caused by operating errors Danger to life if safety function fails!

• Observe the instructions contained in this safety manual without fail if the device is to be used in safety-related applications.

This safety manual contains instructions on the use of devices in safety instrumented systems (SIS). The consideration of safety-related values is based on IEC 61508, ISO 13849-1 IEC 62061. The safety manual describes the values determined for the SIL and PL assessment and is only applicable in conjunction with the attached TÜV certificate 968/FSP 1358.02/23. Read these documents carefully before using the device. This will prevent the risk of personal injury or damage to property or equipment. Keep this manual safe during the service life of the device. If the device is passed on, hand over this safety manual as well.

Target groups
This safety manual is designed for use by suitably qualified and trained personnel and must be read and followed by anyone entrusted with any of the following tasks:

• Unpacking and mounting
• Commissioning
• Setting
• Testing and maintenance
• Troubleshooting
• Disassembly and disposal

Explanation of symbols

The following symbols are used in this safety manual:

DANGER
DANGER indicates an immediate hazardous situation, which, if not avoided, will result in death or serious injury.

NOTE
NOTE indicates tips, recommendations and important information. The notes simplify work, contain information on particular operating steps and help to avoid additional work resulting from incorrect procedures.

MANDATORY ACTION
This symbol denotes actions that the user must carry out.

Applicable documents

• Individual data sheet of the device concerned (see www.turck.com)
• TÜV certificate 968/FSP 1358.02/23 (see Appendix)

Abbreviations and terms

Definition of terms, see IEC 61508-4 and ISO 13849-1

Document history

The German version shall be considered the definitive document. Every care was taken in the production of the translations of this document. If there is any uncertainty in its interpretation, refer to the German version of the safety manual or contact Turck directly.

NOTE
In all cases use the latest version of this safety manual. Check whether a newer version is available.

Notes on devices

Device variants
This safety manual is applicable to …Y1… series capacitive sensors, see TÜV certificate 968/FSP 1358.02/23, type code.

Scope of delivery
Devices in a threaded barrel are supplied with two fixing nuts. Devices in M5, M8 or M12 hous-ings as well as devices with a special surface coating (PTFE) are also supplied with two lock washers. Devices in the rectangular housing (series …QF5,5…Y1…) are also supplied with 2 fixing clamps. Devices with a potentiometer are also supplied with a screwdriver. All devices are sup-plied with the SIL registration card.

Manufacturer and service
Turck supports you in your projects – from the initial analysis right through to the commission-ing of your application. The Turck product database offers you several software tools for pro-gramming, configuring or commissioning, as well as data sheets and CAD files in many export formats. You can access the Product Database directly via the following address: www.turck.de/products

For further inquiries in Germany contact the Sales and Service Team on:

Sales: +49 208 4952-380
Technical: +49 208 4952-390
For overseas inquiries contact your national Turck representative.

Hans Turck GmbH & Co. KG Witzlebenstraße 7 45472 Mülheim an der Ruhr Germany

For your safety

The devices are designed according to the latest state-of-the-art technology. Residual hazards, however, still exist.
Observe the following warnings and safety regulations in order to prevent danger to per-sons and property. Turck accepts no liability for damage caused by failure to observe these regulations.

Intended use
The capacitive sensors of the …Y1… series are provided with a standard NAMUR output. These sensors enable the creation of safety-related systems:

The sensors are 100 % compatible with all standard NAMUR processing units as well as with
(safety) PLC systems with NAMUR inputs. The sensors are not provided with internal fault diag-nostics (Diagnostic Coverage DC = 0) and are classified as device type A (non complex device).
When used in safety systems, the probability of dangerous failure (PFD) and the hardware fault tolerance for the entire circuit must be determined and given due consideration.

Obvious misuse
Apart from the target, objects with conductivity and permittivity must not be situated or brought into the area of the active face or in the metal-free zone (refer to the relevant data sheet).

SIL registration card

NOTE
With safety-related applications of the devices, the SIL registration card enclosed with the device must be filled in completely by the user and returned to Turck.

General safety regulations

• It is the responsibility of the user to ensure that the device is used in compliance with the ap-plicable regulations, standards and laws.
• The suitability for specific applications must be assessed by considering the particular overall safety-related system with regard to the requirements of IEC 61508 and ISO 13849-1 (table 3).
• The device must only be carried out by trained and qualified personnel.
• The device must only be commissioned and operated by trained and qualified personnel.
• A function test must be completed prior to initial operation, after each parameter setting, after repair and replacement, as well as at the stipulated interval T[Proof].
• When the device is in operation, ensure that the power supply is within the specified voltage range.
• Ensure regularly that the plug connections and cables are always in good condition.
• Special application-specific factors such as chemical and physical stresses may cause the premature wear of the devices and must be taken into consideration when planning systems; take special measures to compensate for a lack of experience based values, e.g. through the implementation of shorter test intervals.
• If faults occur in the device that cause a switch to the defined safe state, measures must be taken to maintain the safe state during the further operation of the overall control system.
• Turck must be notified of dangerous failures immediately.
• A faulty device must be replaced immediately and must not be repaired.
• The device must be replaced immediately if the connector is faulty or the device has any vis-ible faults.
• Interventions and conversions on the device are not permissible. Repairs must only be carried out by Turck. Return the device to Turck for this (see section “Repair”).
• Ensure the use of the closed-circuit current principle for all external safety circuits connected to the system.
• Before using the product in safety-related applications, the suitability of the specifications stated in this safety manual for the particular application (e.g. particular branch-specific requirements and practices) must always be checked. In cases of doubt please contact the stated manufacturer’s address.

Device specific information on safety applications

Safety function
In an actuated state, the current consumption is > 2.1 mA and < 6 mA. Both a wire break (< 0.2 mA) as well as a short circuit (> 6 mA) of the sensor cable are defined as safe failures; these failures must be detected in the processing unit.

Functions and operating modes

• The sensors produce a change in the electrical output signal in the proximity of objects with sufficiently high conductivity or permittivity.
• This change complies with EN 60947-5-6:2000. The output behavior of the capacitive sensors has the following characteristics:

Abb. 1: NAMUR characteristic curve of the capacitive sensors as per EN 60947-5-6

Capacitive sensors with a NAMUR output have the following features:

• The current is ≥ 2.1 mA to 6 mA when a target is detected. The sensor is “damped”.
• Ideal switch point: (1.55 ± 0.2) mA at a switching distance Sn
• Current consumption on wire break: < 0.2 mA
• Current consumption on short circuit: > 6 mA
• Undefined state: 1.2 mA to 2.1 mA
• If a target is not present, the current is < 1.2 mA and > 0.2 mA. The sensor is “undamped”.

These values are based on standard targets as per EN 60947-5-2:2014.

• Rectangular, steel 1 mm thick
• Edge length is the greatest value of either
  • 3 × rated operating distance or
  • the diameter of the active face

Types of faults and failures
Failures must be classified in conjunction with the application into safe (non-hazardous) and unsafe (hazardous) failures. You as the operator are responsible for this.

NOTE
Turck must be notified of all damage that was caused by a dangerous undetected failure.

Safety characteristic values

Safety characteristic values

The safety-related characteristic values were determined based on an FMEDA in accordance with IEC 61508. The FMEDA is based on the following assumptions:

• The failure rates are constant.
• The mechanical wear is not considered.
• The propagation of failures is not relevant.
• The device is operated in low demand mode.
• The failure rates of an external power supply are not considered.
• The failure rates used are the Siemens standards SN 29500 at 40 °C.
• The ambient conditions correspond to an average industrial environment, as defined in MIL-HNBK-217-F or IEC 60654-1, Class C (sheltered location).
  • The ambient temperature is normally 40 °C.
  • A safety factor of 2.5 must be applied for ambient temperatures of 60 °C and frequent temperature fluctuations.

Machine safety
The suitability for machine safety applications is based on the transfer of the average probabil-ity of dangerous failure per hour (PFH) determined from the FMEDA (see 4.4.1) as per table 3 of ISO 13849-1.

Hardware architecture
The device is considered as a Type A component (non complex). The hardware fault tolerance HFT is 0.

Characteristic values for …Y1… NAMUR sensors

Recurrent function tests

A function test must be completed prior to initial operation, after each parameter setting, after repair and replacement, as well as at the stipulated interval T[Proof]:

• Ensure that the function test is only carried out by qualified personnel

• Think first about your safety and the safety of your environment. If in doubt, replace the device.

• Use a standard target according to EN 60947-5-2 for the function check.

• Move the standard target to the active face of the sensor to a point up to 1.32 × rated switch-ing distance.
  Ensure here that the switching state has not changed.

• Move the standard target to the active face of the sensor to a point up to 0.72 × rated switch-ing distance.
  Ensure here that the switching state has changed.

• Repeat the above tests with the actual target present. Move the target to the active face of the sensor within the distances present during normal operation.

• Check whether the sensor is mounted securely.

• Check that the mounting is complete (housing cover, use of the supplied lock washers, that the sensor is not actuated in the normal operating state of the installation etc.).

• Check for proper cable entry and correct mounting of the male connector.

• Check the general condition of the device, such as for cracks in the housing or damage.

Useful life
Experience has shown that the useful lifetime often lies within a range of 8 to 12 years. It can be significantly less if elements are operated near their specification limits or if they are exposed to harsh environmental conditions. However, on the other hand it can be extended by appropriate measures. For example, heavy temperature fluctuations could potentially decrease the useful lifetime, as constant temperature below 40 °C could potentially increase the useful lifetime.

Special regulations and restrictions

NOTE
Each application has its particular conditions of use and ambient requirements. For this reason, the safety-related assessment of a system must always take the actual process into account – in addition to the general statements concerning probability of failure, tolerances and failure rates of the components. Special application-specific fac-tors such as chemical and physical stresses may thus cause the premature wear of the devices and must therefore be taken into consideration already during the planning stage of a system. Take special measures to compensate for a lack of experience based values, e.g. through the implementation of shorter test intervals. The estimation of the diagnostic coverage (DC) can vary from application to application. The estimation of the hardware fault tolerance (HFT) can only take place if the use of the compliant object is restricted.

Installation and commissioning

Mounting
Depending on type, the sensors must be mounted either flush or non-flush (see the relevant data sheet at www.turck.com). Any mounting accessories required are also shown in the prod-uct data sheet.

NOTE
Requirements for safety-related mounting:

• With safety-related applications, only mount the sensor so that it is damped when the installation is in a normal operating state.

WARNING

• Non-safety-related mounting
• Risk of injury from device faults!
• For a non-safety-related mounting, the sensor is undamped in the normal operating state of the system.
• With these mounting conditions do not use the sensor in safety-related applications as the safety function will be deactivated in this state.

WARNING!: Incorrect mounting
Risk of injury due to malfunction or sensor failure

• Observe the relevant mounting conditions of the sensor (see data sheet).
• Observe, in particular the tightening torques of the housing nuts and fixing screws.
• Use the lock washers and fixing clamps if supplied.

Connection

Devices with male connector

• Connect the female connector of the connection cable to the male connector of the sensor.
• Connect the open end of the connection cable to the power source and/or processing units as shown in the wiring diagram and the terminal layout of the connected sensor (see data sheet).

Devices with a connection cable

• Devices with a connection cable

Devices with a terminal chamber

• Connect the open end of the connection cable to the sensor according to the following wir-ing diagram.
• Connect the other open end of the connection cable to the power source and/or processing units as shown in the wiring diagram and the terminal layout of the connected sensor (see data sheet).

Wiring diagrams
Refer here to the wiring diagrams of the sensors in the corresponding data sheet.

Commissioning
When the device is in operation, ensure that the power supply is within the specified voltage range.

DANGER
Malfunction caused by operating errors Danger to life if safety function fails!

• A function test must be completed prior to initial operation, after each parameter setting, after repair and replacement, as well as at the stipulated interval T[Proof].

A function test must be completed prior to initial operation, after each parameter setting, after repair and replacement, as well as at the stipulated interval T[Proof].

Selecting processing units
The sensors must be operated with processing units compliant with EN 60947-5-6:2000. These processing units must monitor wire breaks and short circuits and switch to a safe state at cur-rents < 0.2 mA (wire break) and > 6 mA (short circuit). The processing unit must also comply with a suitable SIL certification in accordance with IEC 61508 and performance level according to ISO 13849-1.

• Ensure that the devices and the housing materials are suitable for the application.
• For this refer also to the applicable data sheets of the Turck devices at www.turck.com.

Operation, maintenance and repair

Operation

Normal operation
During normal operation, the LED indicates the switching state of the sensor as follows (only with devices with LED display):

Troubleshooting

Ambient interference
Observe the mounting instructions in the relevant data sheets of the sensors in order to pre-vent any ambient interference.

Device faults
If the device does not function as expected, first check whether ambient interference is present (e.g. deposits in the sensing range of the sensor).
If this is not the case, a device fault is present. In this case, decommission the device and replace it with a new device of the same type. Notify Turck of any safety-related faults on the device.

Maintenance
Ensure regularly that the plug connections and cables are always in good condition. The devices are maintenance-free, clean dry if required.

DANGER
Malfunction caused by conductive media or static charge Danger to life if safety function fails!

• When cleaning do not use any liquid media or statically charging cleaning agents.

Repair

DANGER
The device must not be repaired. Danger to life due to malfunction!

• Send the device to Turck for repair. Observe here the specific warranty conditions agreed with the shipment.

DANGER
Malfunction caused by operating errors Danger to life if safety function fails!

• A function test must be completed prior to initial operation, after each parameter setting, after repair and replacement, as well as at the stipulated interval T[Proof]

Returning devices
If a device has to be returned, bear in mind that only devices with a decontamination declara-tion will be accepted. This is available at http://www.turck.de/en/retoure-service-6079.php and must be completely filled in, and affixed securely and weather-proof to the outside of the packaging.

Decommissioning and withdrawal from service

Decommissioning

• Remove the connection cable from the power supply and/or processing units.
• Disconnect the connection cable from the sensor.
• Undo the connections of the sensor or the mounting aid for the mounting environment.
• If necessary, undo the connection of the sensor to the mounting aid.

Withdrawing from service
Devices must be properly disposed of and must not be included in general household garbage.

Appendix

TÜV certificate 968/FSP 1358.02/23

Certificate

Nr./No.: 968/FSP 1358.02/23

Type designation key

The range of two-wire proximity switches type … -.. -Y1. -… /… consists of different designs divided into ten groups. The identification of the appropriate type group is related to the designs and can be determined from the following table:

Safety-related parameters:

Remark: 1 FIT = 1 E-09 1/h. Failure rates of the electronic comnonents as ner Siemens SN 29500

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References

• FS-PRODUCTS
• Turck.com
• Products

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