IFM Electronic Efector 100 GG711S Bedienungsanleitung

Original operating instructions

Fail-safe inductive sensor

GG711S

704198 / 01 06 / 2010

Contents

1 Preliminary note ��3

1�1 Explanation of symbols ��3

2 Safety instructions ��4

2�1 Safety-related requirements regarding the application ��4

3 Items supplied��5

4 Functions and features ��5

5 Functions ��6

5�1 Enable zone ��6

6 Installation��7

7 Electrical connection ��8

7�1 Operation as 4-wire unit ��8

7�2 Operation as 3-wire unit ��8

8 Operation ��9

8�1 Switching status of the outputs ��9

8�1�1 The safe state ��9

8�1�2 The switched state ��9

8�1�3 Output data ��9

8�1�4 Cross faults ��9

8�2 Response times ��10

8�3 LED display ��10

9 Scale drawing �� 11

10 Technical data �� 11

11 Troubleshooting ��14

12 Maintenance, repair, disposal ��14

13 Approvals/standards ��15

14 Terms and abbreviations ��15

1 Preliminary note

The instructions are part of the unit� They are intended for authorised persons

according to the EMC and Low Voltage Directive 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�

Adhere to the safety instructions�

1.1 Explanation of symbols

►

Request for action

LED on

LED off

LED flashes

LED flashes quickly



Important note

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 these instructions�

Also adhere to the safety instructions for the operation of the whole installation�

• In case of non-observance of notes or standards, specially when tampering

with and/or modifying the unit, any liability and warranty is excluded�

• 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� Tampering

with the unit is not allowed�

• Disconnect the unit externally before handling it� Also disconnect any

independently supplied relay load circuits�

• After setup the system has to be subjected to a complete function check�

• Use the unit only in specified environmental conditions (→ 10 Technical 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�

Observe the following requirements:

► Take measures to avoid metallic objects being placed on the sensing face

intentionally or unintentionally�

► Adhere to EN 1088 for interlocking devices associated with guards�

► Adhere to the specified operating conditions (→ 10 Technical data)� Use of

the sensor in the vicinity of chemical and biological media as well as ionising

radiation is not permitted�

► 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 GG711S with 2 mounting nuts M18,

1 operating instructions GG711S, ident no� 704198�

If one of the above-mentioned components is missing or damaged, please contact

one of the ifm branch offices�

4 Functions and features

The fail-safe inductive sensor GG711S 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 sar (→ 10

Technical data)�

Also observe the notes on installation of the sensor (→ 6 Installation)�

The fail-safe sensor conforms to Performance Level d to EN ISO 13849-1 as well

as the requirements SIL 2 to IEC 61508 and fulfils SILcl 2 to IEC 62061�

The unit corresponds to the classification I2A18SP2 to IEC 60947-5-2 for

non-flush installation (→ 6 Installation)�

The fail-safe inductive sensor has been certified by TÜVNord�

5 Functions

 







fail-safe sensor



close zone



enable zone



safe switch-off distance sar



damping element

Yellow signal LED: switching status

Green power LED: operating voltage

5.1 Enable zone

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�

If damped with a standard target plate of 24 x 24 x 1 mm made of FE360 (= mild

steel) and non-flush installation to IEC 60947-5-2 the enable zone is in the range

of ≤ 1 �� ≥ 8 mm�

The safe switch-off distance sar is > 12 mm�

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 other materials*:

Material Enable zone

stainless steel 0�5��5�6 mm

AIMg3G22 0��3�2 mm

CuZn37 0��3�2 mm

Cu 0��2�4 mm

* Typical values for damping with a reference target plate of 24 x 24 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 can be non-flush mounted according to IEC 60947-5-2, type I2A18SP2�

► Ensure the unit cannot work loose� Maximum tightening torque: 30 Nm

► Adhere to the installation conditions in accordance with the figures 1 to 3:

 













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 61131-2�



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)�



For unit with cULus approval and the scope of validity cULus:

The device shall be supplied from an isolating transformer having a

secondary listed fuse rated either

a) max� 5 amps for voltages 0~20 Vrms (0~28�3 Vp) or

b) 100/Vp for voltages of 20~30 Vrms (28�3~42�4 Vp)�

7.1 Operation as 4-wire unit





































Safety-related logic unit

7.2 Operation as 3-wire unit









































Safety-related logic unit



In case of operation as 3-wire unit only A2 must be used as output

(OSSD). Otherwise the safety function of the sensor will be impaired or

prevented.

► Connect output A1 to supply voltage�

► Make absolutely sure to exclude cross faults and short circuits between the

supply voltage and output A2 by means of appropriate installation!

The indicated values regarding the safety function (→ 10 Technical data) remain

unchanged�

8 Operation

8.1 Switching status of the outputs

8.1.1 The safe state

The safe state is when at least one of the outputs A1 and A2 (OSSD) is switched

off (zero-current state: logic "0")�

If one of the outputs A1 and 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 (OSSD) are enabled (logic "1")�

8.1.3 Output data

The output data are based on the input data 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

8.1.4 Cross faults

• A cross fault between both outputs (A1 and A2) is detected by the fail-safe

sensor and leads to switching off the outputs (OSSD) at the next safety

request� The outputs A1 and A2 remain switched off until the error has been

removed�

• A cross fault between one of the two outputs (A1 or A2) and the supply voltage

leads to switching off the other output (A2 or A1) in case of a safety request�

8.2 Response times

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

Duration of switch-off test pulses ≤ 1 ms

8.3 LED display

LED

status

Operating status Outputs A1

(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

Signal

Power

damping element at safe

switch-off distance from the

sensor (≥ 12 mm)

both outputs switched off 0 0

Signal

Power

sensor error

(→ 11 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 0

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