IFM OY Series User manual
704555 / 06 12 / 2018
Original operating instructions
Photoelectric safety sensors
(safety light curtain / safety light grid)
Protected area width (range) 0...12 m
OY
UK
2
Contents
1 Preliminary note...................................................................................................4
1.1 Symbols used ................................................................................................4
1.2 Warning signs used .......................................................................................4
2 Safety instructions ...............................................................................................5
2.1 Safety-related requirements regarding the application..................................6
3 Items supplied......................................................................................................7
4 Functions and features ........................................................................................7
5 Function...............................................................................................................8
6 Installation............................................................................................................9
6.1 Installation instructions ..................................................................................9
6.2 Calculation of the minimum safety distance ................................................10
6.3 Vertical installation of the safety light curtains / light grids...........................12
6.3.1 Safety light curtains resolutions 30 mm and 40 mm ..........................12
6.3.2 Safety light curtains resolutions 50 mm and 90 mm, safety light grids
2, 3 and 4 beams..........................................................................................13
6.4 Horizontal installation of the safety light curtains.........................................14
6.5 Fixing and optical alignment ........................................................................14
6.5.1 Optical alignment................................................................................15
6.6 Distance of the reflecting surfaces ..............................................................16
6.7 Multiple systems ..........................................................................................18
6.8 Use of corner mirrors...................................................................................19
7 Electrical connection..........................................................................................20
7.1 Wiring diagram transmitter...........................................................................20
7.1.1 Configuration protected area width (range) ........................................20
7.2 Wiring diagram receiver...............................................................................21
8 Operating modes ...............................................................................................22
8.1 Automatic operation.....................................................................................23
8.2 Manual operation.........................................................................................23
8.3 Connection of external contactors K1 and K2 ............................................24
8.4 Test function.................................................................................................24
8.4.1 Internal test function ...........................................................................24
9 Operating and display elements ........................................................................25
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9.1 LED states ...................................................................................................25
10 Operation.........................................................................................................26
10.1 Switching state of the outputs....................................................................26
10.1.1 The safe state...................................................................................26
10.1.2 The switched state............................................................................26
10.1.3 Interface classification ......................................................................27
10.2 Functional test of the safety light curtains / light grids ...............................27
11 Scale drawing ..................................................................................................28
11.1 safety light curtain......................................................................................28
11.2 safety light grid...........................................................................................29
12 Technical data..................................................................................................30
12.1 Safety light curtains / light grids type 2 ......................................................30
12.1.1 Safety light curtains: 30 mm resolution.............................................31
12.1.2 Safety light curtains: 40 mm resolution.............................................31
12.1.3 Safety light curtains: 50 mm resolution.............................................31
12.1.4 Safety light curtains: 90 mm resolution.............................................32
12.1.5 Safety light grids 2, 3 and 4 beams ..................................................32
12.2 Safety light curtains / light grids type 4 ......................................................33
12.2.1 Safety light curtains: 30 mm resolution.............................................34
12.2.2 Safety light curtains: 40 mm resolution.............................................34
12.2.3 Safety light curtains: 50 mm resolution.............................................34
12.2.4 Safety light curtains: 90 mm resolution.............................................35
12.2.5 Safety light grids 2, 3 and 4 beams ..................................................35
13 Troubleshooting ...............................................................................................35
13.1 Fault diagnosis transmitter ........................................................................36
13.2 Fault diagnosis receiver.............................................................................36
14 Maintenance, repair and disposal....................................................................37
15 Terms and abbreviations..................................................................................38
16 Annex...............................................................................................................39
16.1 Check list ...................................................................................................39
4
1 Preliminary note
The instructions are part of the unit. They are intended for authorised persons
according to the EMC and low voltage 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.
Adhere to the safety instructions.
1.1 Symbols used
►Instruction
> Reaction, result
[…] Designation of pushbuttons, buttons or indications
→Cross-reference
Important note:
Non-respect can result in malfunctions or interference.
Information
Supplementary note.
Access prevention hand protection
Access prevention bodies or parts of bodies
Primary guarding bodies or parts of bodies
Access prevention body protection
1.2 Warning signs used
WARNING
Warning of serious personal injury.
Death or serious irreversible injuries may result.
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UK
2 Safety instructions
• Follow the operating instructions.
• 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 the installation the standards EN 60204 and ISO 13855 have to 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. Disconnect all relay load
circuits that are supplied independently.
• After setup the system has to be subjected to a complete function check.
• Only use the unit under the specified operating conditions (→ 12 Technical
data). In case of special operating conditions please contact the manufacturer.
• In case of any questions concerning safety - if required - contact the safety
expert in charge of your country.
WARNING
In case of improper handling of the product, the safety and physical
integrity of operators and machinery cannot be guaranteed.
Death or serious irreversible injuries may result.
►Obseve all notes on installation and handling in these instructions.
►The photoelectric safety sensors must only be used under the specified
operating conditions and in accordance with use as prescribed below.
6
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:
►Adhere to the specified operating conditions (→ 12 Technical data). Use of the
photoelectric safety sensors in the vicinity of chemically and biologically active
media as well as ionising radiation is not permitted.
►For applications in the food industry contact your ifm branch office to check
the compatibility of the materials of the photoelectric safety sensors with the
chemicals used.
►Adhere to the principle of normally closed operation for all external safety
circuits connected to the system.
►If the photoelectric safety sensors go into the state defined as safe due to an
internal fault, measures have to be taken to maintain the safe state when the
installation resumes operation.
►Replace damaged units.
The protective function of the photoelectric safety sensors is only ensured with the
following conditions:
• The machine control can be electrically controlled and the hazardous machine
motion can be stopped immediately at any time of the operation cycle.
• There is no danger for machine operators due to ejection of materials or
machine parts.
• The hazardous area is only accessible via the protected area.
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UK
3 Items supplied
• 2 photoelectric safety sensors (1 transmitter and 1 receiver)
• up to a total length of 1263 mm: 4 angle brackets, 4 slot nuts with M5 thread
and suitable nuts
• starting with 1263 mm total length: 6 angle brackets, 6 slot nuts with M5 thread
and suitable nuts
• 1 copy operating instructions photoelectric safety sensors, reference no.
704555.
If one of the above-mentioned components is missing or damaged, please contact
one of the ifm branch offices.
4 Functions and features
transmitter (T) receiver (R)
P = protected area; I = protected area width (range) H = protected area height
The OY safety light curtains / light grids are multi-beam optoelectronic safety
devices to IEC 61496 and consist of one transmitter and one receiver.
8
5 Function
The protected area (P) is generated between the transmitter and the receiver and
is defined by the protected area height (H) and the protected area width (range)
(I).
The protected area height is the height protected by the safety light curtain / safety
light grid. It depends on the design (→ 12 Technical data).
If the safety light curtains / light grids are installed horizontally, this value indicates
the depth of the protected area.
The protected area width (range) is the maximum distance between transmitter
and receiver (→ 12 Technical data).
If the protected are is clear, the two outputs (OSSDs) of the receiver are active.
If an object (O) with a diameter greater than or equal to the resolution (d) enters
the protected area, the outputs are switched off.
The resolution (d) (detection capability) of the safety light curtain / light grid
depends on the lens diameter (B) and the lens distance (C) and remains constant
at all application conditions.
transmitter (T) receiver (R)
O = object
C = lens distance
B = lens diameter
d = resolution
To ensure that an object (O) is reliably detected in the protected area the
dimensions of the object (O) must be at least as great as the resolution (d).
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UK
6 Installation
6.1 Installation instructions
The following conditions are to be ensured before installation of the photoelectric
safety sensors:
• The degree of protection of the electro-sensitive equipment (ESPE) has to
correspond with the risk assessment of the machine to be monitored.
• The safety system ensures a safety function and is not required for the
operation of a machine.
• It must be possible to stop any hazardous motion of the machine immediately.
In this respect the shutdown delay of the machine has to be determined.
• The object to be detected must be greater than or equal to the resolution of the
photoelectric safety sensor.
Install the photoelectric safety sensors so that the hazardous area can only
be accessed via the protected area. Depending on the application other
mechanical protective equipment may be necessary.
The operating conditions at the mounting location must not affect the functioning
of the photoelectric safety sensors. Please note especially:
• The transmitter and the receiver must not be affected by intensive light sources
(emitters, sunlight etc.).
• The operating temperature must be within the range indicated (→ 12 Technical
data).
• Fogging of the lenses due to considerable temperature fluctuations can affect
the functioning of the photoelectric safety sensors. Take appropriate measures
to prevent this.
• Certain operating conditions can affect the functioning of the photoelectric
safety sensors. For mounting locations where fog, rain, smoke or dust may
occur, it is recommended to take appropriate measures.
• The directive ISO 13855 must be observed.
10
Observe the following illustrations for correct installation of the photoelectric
safety sensors.
Correct installation
Wrong installation
6.2 Calculation of the minimum safety distance
There must be minimum safety distance between the photoelectric safety sensor
and the point of danger. This distance must be ensured so that the point of danger
cannot be accessed before the hazardous state of the machine has been stopped.
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