IFM Electronic Efector 100 GM505S Bedienungsanleitung

Original operating instructions

Fail-safe inductive sensor

GM505S

701832 / 03 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 Function ��6

5�1 Enable zone ��6

5�2 Protection against simple defeating ��7

6 Installation��8

6�1 Alignment of the sensing face ��8

6�2 Installation conditions ��9

7 Electrical connection ��9

8 Set-up ��10

8�1 Activate adjustment mode ��10

8�2 Determine the enable zone �� 11

8�3 End adjustment mode �� 11

9 Operation ��12

9�1 Sensor signals ��12

9�2 Input characteristics / output characteristics ��12

9�3 Cross faults ��13

9�4 Operating mode ��13

9�4�1 Delayed switching of the LED ��13

9�4�2 Switching of the LED without delay ��14

9�5 Response times ��15

9�6 LED display ��16

10 Scale drawing ��17

11 Technical data ��17

12 Troubleshooting ��20

13 Maintenance, repair and disposal ��20

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

14 Approvals / standards ��20

15 Terms and abbreviations ��21

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�

• Only use the unit under the specified operating conditions (→ 11 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 (→ 11 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 GM505S with premounted angle bracket,

1 Allen key for fixing the fail-safe sensor onto the angle bracket,

1 operating instructions GM505S, ident number 701832�

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 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 (→ 11

Technical data)�

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

The fail-safe sensor conforms to the category 4 according to EN 954-1 (valid until

31 December 2011), Performance Level e according to EN ISO 13849-1:2008 as

well as to the requirements SIL 3 to IEC 61508�

The unit corresponds to the classification I2C40SP2M to IEC 60947-5-2 for non-

flush installation (→ 6 Installation)�

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

5 Function



Fail-safe sensor



2 x LED: signal (yellow); power (green)



Close range



Enable zone



Safe switch-off distance sar



Target

5.1 Enable zone

The output is only enabled when damped in the enable zone� Outside this enable

zone the output remains switched off�

If damped with a standard target plate of 60 x 60 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 10��20 mm�

The safe switch-off distance sar is > 35 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

steel FE360 10��20 mm

stainless steel 7�5��15 mm

AIMg3G22 2�7��8�5 mm

AI 99 % 1�9��7�9mm

CuZn37 2�9��8�5 mm

Cu 1�3��7�0 mm

* Typical values for damping with a reference target of 60 x 60 x 1 mm and non-flush

installation to IEC 60947-5-2 at an ambient temperature of 20°C�

5.2 Protection against simple defeating

The fail-safe sensor reacts to metal objects, e�g� the frame of a security door�

Other metal objects that are not intended to enable the sensor must not be

allowed to enable the fail-safe sensor, either intentionally or unintentionally�



► Take measures to prevent metal objects, except the designated target,

from being placed on the sensing face or in the enable zone intentionally

or unintentionally�

In addition, the sensor has the following switching characteristics to make simple

defeating of its safety function more difficult:

1� By slowly introducing a metallic object into the enable zone, the output is

immediately switched, but displayed by the signal LED with a delay of about 3

s (→ 9�4�1 Delayed switching of the LED)� By doing so, the object is generally

in the close range before the LED indication is lit� The technical instructions

concerning the restart of the installation must be observed�

2� If the object stays in the close range for longer than approx� 2 s, the output is

completely disabled and no longer enabled if damped in the enable zone� If

the object stays in the close range for longer than approx� 5 s, the adjustment

mode is activated (→ 8�1 Activate adjustment mode)�

Release of the enable zone can be carried out

• either by undamping (> 35 mm) for a time of more than 2 s

• or by a voltage interruption

(→ 8�3 End adjustment mode)�

6 Installation

6.1 Alignment of the sensing face

2 31

5 64

The socket is rotatable:

8 97

6.2 Installation conditions

The unit is non-flush mountable according to IEC 60947-5-2, type I2C40SP2M�



► Install the unit non-flush only�

In case of flush installation, the sensing range is increased and the sensor

can remain permanently switched (not allowed)�

► Ensure the unit cannot work loose�

► Tighten captive screws with 1 Nm�

► Limit the use of oblong holes to the initial setting�

► Adhere to the installation conditions in accordance with the figures 1 to 4:

80 80

105

280

7 Electrical connection

Wiring diagram → 11 Technical data

► Disconnect the unit� 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 one fault the supply voltage must not exceed 60 V DC for more

than 0�2 s up to a max� value of 120 V DC (this corresponds to SELV to

EN 60950-1)�

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 as

noted in the following table�

Overcurrent protection

Control-circuit wire size Maximum protective device rating

AWG (mm2) Ampere

26 (0�13) 1

24 (0�20) 2

22 (0�32) 3

20 (0�52) 5

18 (0�82) 7

16 (1�3) 10

8 Set-up

8.1 Activate adjustment mode

For easy and reliable installation the sensor can be put in the adjustment mode�

350

> 5 s

Signal

Power

This is done by placing a metallic

object directly in front of the sensing

face of the fail-safe sensor (close

range)�

After approx� 5 s the yellow signal

LED starts to flash: the adjustment

mode is active�

As long as this mode is active, the

output stage remains in the safe

state ("0")�



Close range



Enable zone

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