GF711S - Inductive sensor IFM - Free user manual and instructions

USER MANUAL GF711S IFM

UK English According to the machine directive 2006/42/EC the original operating instructions and a translation of these operating instructions into the language or languages of the EU user country must be provided when a unit or protective system is put into operation within the member countries of the European Union (EU). If no operating instructions or EC declaration of conformity is supplied with this product in the language of the EU user country, these can be requested from your dealer (see delivery note) or manufacturer (see cover sheet / back). Only qualified personnel is allowed to set up the product. Furthermore, we expressly point out that any liability is excluded resulting from putting the unit into operation without the corresponding operating instructions in the language of the EU user country.

2.1 Safety-related requirements regarding the application ..................................4

6.1 Protection against simple defeating ...............................................................8

1 Preliminary note The instructions are part of the unit. They are intended for authorised persons according to the EMC, Low Voltage and Machinery Directives and safety regulations. The instructions contain information about the correct handling of the product. Read the instructions before use to familiarise yourself with operating conditions, installation and operation. Follow the safety instructions.

• Cross-reference Important note Non-compliance can result in malfunction or interference. Information Supplementary note. LED on LED off LED flashes (2 Hz) LED flashes quickly (5 Hz)

1.2 Warning signs used

WARNING Warning of serious personal injury. Death or serious irreversible injuries may result.4 2 Safety instructions

• Follow the operating instructions.

Improper use may result in malfunctions of the unit. This can lead to personal injury and/or damage to property during operation of the machine. For this reason note all remarks on installation and handling given in this document. Also adhere to the safety instructions for the operation of the whole installation.

• In case of non-observance of notes or standards, especially when tampering with and/or modifying the unit, any liability and warranty is excluded.

If the sensor is damaged, the safety function cannot be guaranteed.

Errors caused by damage cannot be detected by the sensor.

• The unit must be installed, connected and put into operation by a qualified electrician trained in safety technology

• The applicable technical standards for the corresponding application must be complied with.

• For installation the requirements according to EN 60204 must be observed.

In case of malfunction of the unit please contact the manufacturer. T ampering with the unit is not allowed.

• Disconnect the unit externally before handling it. Also disconnect any independently supplied relay load circuits.

• After installation, maintenance or repair of the system perform a complete function check.

Use the unit only in specified environmental conditions (→ 9 T echnical data). In case of special operating conditions please contact the manufacturer

Use only as described below (→ 4).

2.1 Safety-related requirements regarding the application

It must be ensured that the safety requirements of the respective application correspond to the requirements stated in these instructions.5

WARNING Failure of the safety function When used outside of the defined environmental conditions, the safety-related function of the sensor cannot be guaranteed. ► Use only in accordance with the defined environmental conditions (→ 9 Technical data). Use of the sensor in the vicinity of chemical and biological media (solid, liquid, gaseous) as well as ionising radiation is not permitted. Observe the following requirements: ► Take measures to avoid metallic objects being placed on the sensing face unintentionally. ► Adhere to EN 14119 for interlocking devices associated with guards. ► Adhere to the principle of normally closed operation for all external safety circuits connected to the system. ► In case of faults within the fail-safe sensor which result in the defined safe state: take measures to maintain the safe state when the complete control system continues to be operated. ► Replace damaged units. 3 Items supplied 1 fail-safe sensor GF711S with 2 M12 fixing nuts, 1 original instructions GF711S, ident no. 11491846. If one of the above-mentioned components is missing or damaged, please contact one of the ifm branch offices.6 4 Functions and features The fail-safe inductive sensor GF711S detects metal without contact. Safety function SF: the safe state (output stage switched off; logic "0") is achieved when undamping greater than or equal to the safe switch-off distance s

(→ 9 Technical data). Also observe the notes on installation of the sensor (→ 6 Installation). The fail-safe inductive sensor is a proximity device with defined behaviour under fault conditions (PDDB) to IEC 60947-5-3. The fail-safe sensor conforms to Performance Level d according to EN ISO 13849-1 as well as to the requirements SIL 2 to IEC 61508 and meets SILcl 2 to IEC 62061. The unit corresponds to the classification I2A12SP2 to IEC 60947-5-2 for non- flush installation (→ 6 Installation). The fail-safe inductive sensor has been certified by TÜVNord. 5 Function "0" "1" 1: dual LED: signal (yellow); power (green) 2: close zone 3: enable zone 4: safe switch-off distance s

The outputs (OSSD) are only enabled when a damping target is present in the enable zone. Outside this enable zone the outputs remain switched off. The safe switch-off distance s

• The enable zone is different if damping elements which deviate from the standard target plate in terms of material, form and size are used. Enable zone for selected materials*: Material Enable zone FE360 (= mild steel) 0.5 p. 4
• mm Stainless steel 0 p. 3
• .1 mm AIMg3G22 0 p. 1
• .8 mm CuZn37 0 p. 2
• .0 mm Copper 0 .2 mm p. 1

• Typical values for damping with a reference target of 12 x 12 x 1 mm and non-flush installation to IEC 60947-5-2 at an ambient temperature of 20 °C. Depending on the characteristics of the damping element there may be no close zone. 6 Installation The unit is non-flush mountable according to IEC 60947-5-2, type I2A12SP2. ► Ensure the unit cannot work loose (tightening torque ≤ 7 Nm). ► Adhere to the installation conditions in accordance with the figures 1 to 3:

► Tighten the socket according to the manufacturer's indications. Observe the tightening torque for the ifm socket (e.g. EVxxxx: 0.6...1.5 Nm). Flush installation of the fail-safe sensor is not permitted since this can result in an increase of the sensing range up to enabling of the outputs (OSSDs).8

6.1 Protection against simple defeating

The fail-safe sensor reacts to metal objects, e.g. the frame of a safety door. Other metal objects that are not intended to enable the sensor must not be allowed to enable the fail-safe sensor unintentionally. ► Take measures to prevent metal objects, except the designated target, from being placed on the sensing face or in the enable zone unintentionally

7 Electrical connection ► Disconnect power. Also disconnect any independently supplied relay load circuits. ► Supply voltage: connect L+ to pin 1 and L- to pin 3 of the connector

The nominal voltage is 24 V DC. This voltage may vary between 19.2 V and 30 V incl. 5 % residual ripple to EN 61 131-2. In case of a single fault the supply voltage must not exceed a maximum of 40 V DC. (This requires the safe separation between power supply and transformer.)

1: safety-related logic unit *

• When there is no current flow on the output stage, back feeding > 3.5 V will lead to malfunction.9

8.1 Switching state of the outputs

8.1.1 The safe state

The safe state is when at least one of the outputs A1 or A2 (OSSDs) is switched off (zero-current state: logic "0"). If one of the outputs A1 or A2 is switched off, the subsequent safety-related logic unit must bring the complete system into the state defined as safe.

8.1.2 The switched state

If the damping element is in the enable zone and if there is no sensor error, both outputs A1 and A2 (OSSDs) are enabled (logic "1").

8.1.3 Output characteristics

The output characteristics are compatible with the input characteristics to EN 61131-2 type 1 or 2: Logic "1" ≥ 15 V 2...15 mA ≥ 11 V 15...30 mA Logic "0" ≤ 5 V leakage current 0.2 mA The interface corresponds to interface type C class 1 according to the ZVEI position paper "Klassifizierung binärer 24-V-Schnittstellen mit Testung im Bereich der Funktionalen Sicherheit" (Classification of binary 24V interfaces tested with regard to functional safety).

8.1.4 Cross fault / short circuit

A cross fault between both outputs (A1 and A2) is detected by the fail-safe sensor and results in the outputs (OSSD) being switched off at the next safety request. The outputs A1 and A2 remain switched of f until the error has been removed or a voltage reset has been carried out.

A cross fault (short circuit) between output A2 and the supply voltage results in the other output A1 being switched off in case of a safety request.

• When there is no current flow on the output stage, back feeding > 3.5 V will lead to malfunction.

The device carries out self-tests for the switch-off capability on A2.10

Response time on safety request (removal from the enable zone) ≤ 1 ms Response time when approaching the enable zone (enable time) ≤ 1 ms Risk time / response time for safety-related faults ≤ 20 ms Simultaneity of switching on and off of the outputs in case of a safety request ≤ 1 ms Test pulse duration t i_max on A2 (1) ≤ 1 ms Test pulse interval T on A2 (2)

(OSSD) Signal Power No voltage supply Both outputs switched off 0 0 Signal Power Undervoltage 1

Signal Power Overvoltage Both outputs switched off 0 0 Sensor fault (→ 10 Troubleshooting) One output or both outputs switched off

Signal Power Damping element in the enable zone Both outputs enabled 1 1 Damping element in the close zone Output A2 is switched off 1 012 9 Technical data [V] [V] [mA] [V] [mA] [nF] [mm] [mm] [s] [ms] [ms] [ms] duct e se so s Product characteristics Fail-safe inductive sensor Metal thread M12 x 1 M12 connector Enable zone 0.5...4 mm; [nf] non-flush mountable Complies with the requirements: EN ISO 13849-1: 2015 category 2 PL d (can be used in applications up to cat. 3) IEC 61508: SIL 2 IEC 62061: SILcl 2 Application Type of operation continuous operation (maintenance-free) Electrical data Electrical design DC PNP Operating voltage 24 DC (19.2...30 DC) Rated insulation voltage 30 Current consumption < 20 Protection class III Reverse polarity protection yes Outputs Output function 2 x OSSD (A1 and A2) Output data Interface type C class 1 Output voltage at 24 V compatible with EN 61131-2 inputs type 1, 2 Voltage drop < 2.5; (30 mA) Current rating 100 Short-circuit protection yes Max. capacitive load CL_max 20 Range Enable zone 0.5...4 Safe switching off distance s(ar) 6 Reaction times Power-on delay time 1 Response time to safety request 1 Response time when approaching the enable zone (enable time) 1 Risk time (response time for safety -related faults) 2013

• [kPa] [m] [h] [1/h] [kg] [piece] Environment Applications Class C to EN 60654-1 weatherproof application Ambient temperature -25 p. 70
• , for service life 87600 h 10 p. 40
• , for service life 175200 h Rate of temperature change 0.5 Max. relative air humidity 5 p. 95
• , briefly 5 p. 70
• , permanently Air pressure 80 Height above sea level 2000 Ionising radiation not permissible Salt spray no Protection IP 65 / IP 67 Tests / approvals EMC p. 106

EN 60947-5-2 EN 61000-4-2 ESD: 6 kV CD / 8 kV AD EN 61000-4-3 HF radiated: 20 V/m EN 61000-4-4 Burst: 2 kV EN 61000-4-6 HF conducted: 10 V EN 61000-4-8: 30 A/m EN 55011: class B Shock resistance IEC 60947-5-2 Vibration resistance IEC 60947-5-2 Safety classification Mission time TM 175200, (20 years) Safety-related reliability PFHd 1.0E-07 Mechanical data Mounting non-flush mountable Housing materials stainless steel 316L / 1.4404; PBT Weight 0.116 Displays / operating elements Display LED yellow (signal), LED green (power) Electrical connection Connection M12 connector; Gold-plated contacts Wiring 1: Safety-related logic unit Accessories Accessories (included) 2 lock nuts Remarks Remarks Unless stated otherwise, all data refer to the 12x12x1 mm reference target plate to IEC 60947-5-2 (FE360 = mild steel) over the whole temperature range. Pack quantity 1 ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — GB — GF711S-03 — 18.03.201614 10 Troubleshooting LED display → 8.3 Problem Possible cause Troubleshooting No LED display No voltage supply Apply voltage Power LED flashes and sensor does not switch

• Overvoltage Correct the voltage (→ 9 Technical data) Sensor does not switch, not even after undamping and redamping Sensor was brought into the safe state (logic "0"). Cause:

• cross fault between both outputs A1 and A2

• cross fault between output A2 and the supply voltage

• error in the sensor detected

• Remove the cross fault

• Replace the unit No close zone Due to its characteristics (material, form, size), the damping element displaces the enable zone until directly in front of the sensing face If possible, change the material, form or size of the damping element (→ 5.1 Enable zone) 11 Maintenance, repair and disposal If used correctly, no maintenance and repair measures are necessary. Only the manufacturer is allowed to repair the unit. After use dispose of the unit in an environmentally friendly way in accordance with the applicable national regulations.15

12 Terms and abbreviations OSSD Output Signal Switch Device PDDB Proximity devices with defined behaviour under fault conditions PFH (PFH

Probability of (dangerous) Failure per Hour PL Performance Level PL to EN ISO 13849-1 SIL Safety Integrity Level SIL 1-4 to IEC 61508. The higher the SIL, the lower the probability that a safety function will fail. SIL

Safety Integrity Level claim limit According to IEC 62061