Light curtain for protecting of man and machine
A light curtain protects against unauthorized access of people to area's and/or machines. A light curtain consists of at least two components, a transmitter and a receiver. It is possible to connect several light curtains to each other and to use it as a master/slave setup (cascade).
Preventing dangerous situations
The emitter emits signals that are received by the receiver. If this signal is interrupted, the system switches off, preventing a dangerous situation. The minimum protected height that can be secured is 160 mm, the highest protected height is 2260 mm.
Different beam distances
In a set of light curtains, the emitter sends multiple signals to the receiver. The distance between the beams is 14, 20, 30, 40, 50 or 90 mm. The beam distance depends on the application. With a low beam distance, it is possible to use finger protection, with walk-in protection a greater resolutions of beam distance is required. ReeR light curtains are available in safety type 2 and safety type 4 and can be used in a safety system with the use of a safety relay.
Safety light curtain | Type 2 and type 4
Safety light curtain ReeR EOS4 is a compact light curtain with safety level SIL3, SILCL3, PL e and Cat. 4. The ReeR EOS4 series consists models with integrated safety functions, including control of outputs, and control of external switching contacts (EDM) and automatic manual restart. By using a master/salve setup, more than two light curtains can be connected to each other.
- Type 4 according to EN 61496-1; IEC 61496-2
- SIL 3 according to IEC 61508
- SILCL according to IEC 62061
- PL e - Cat. 4 according to EN ISO 13849-1
The light curtain is provided with an LED indication with which the status is indicated. On receivers with 14mm beam distance and H-models, a blue LED indicates when the signal is too weak. View ReeR EOS4 light curtain.
Safety light curtain ReeR EOS2 includes models with integrated safety functions, including control of outputs, external switching contacts (EDM) and automatic/manual selectable restart and complies with safety levels:
- Type 2 according to EN 61496-1; IEC 61496-2
- SIL 1 according to IEC 61508
- SILCL 1 in accordance with IEC 62061
- PL c - Cat. 2 according to EN ISO 13849-1
Watertight, ATEX and heated light curtains
Waterproof and watertight light curtains
For an area or machine that needs to be cleaned under high pressure, ReeR offers a solution with waterproof light curtains with IP69K housing. The light curtains are resistant to water and steam. View waterproof and watertight light curtains.
Heated light curtains
Light curtains can also be used outside. Not only watertightness is important, also condensation affects the operation of a light curtain. A heated light curtain offers a solution. A small heating element creates no condensation in the watertight housing and it can be used for outdoor applications. View heated light curtains.
Atex light curtains
Atex light curtains are suitable for Atex zone 2 and Atex zone 22. View Atex light curtains.
Different security light curtains
With a light curtain it is possible to protect people and machines against dangerous situations. It is possible to protect people against a number of occurring situations.
Light curtain for finger protection
A light curtain for finger protection is always a type 4 light curtain and has a beam distance of 14 mm. View light curtain for finger protection.
Light curtain for hand protection
A light curtain for hand protection can be a type 2 or type 4 light curtain and has a beam distance between 20 and 40 mm. View light curtain for hand protection.
Light curtain for body protection
A light curtain for body protection can be a type 2 or type 4 light curtain and has a beam distance between 40 and 90 mm. View light curtain for body protection.
Light curtain for walk-in protection
A light curtain for walk-in protection consists of two, three or four beams and can be a safety type 2 or safety type 4 light curtain. The resolution distance depends on the chosen height and the number of beams. View light curtain for walk-in protection.
Light curtains for outdoor and long distances (80m)
ReeR Admiral has a safety level Type 4, SILCL3, PL e, Cat. 4 and has models with a maximum range of up to 80 meters. A long-distance light curtains for outdoor use is equipped with a heating module and the light curtains are watertight so condensation can not form. The most suitable light curtain for outdoor applications is the 'dual beam' light curtain. One beam is sent by two beams. If one of the two dual beams is interrupted by, for example, a water drip, this does not cause any problems. Only when both beams are interrupted, this will be detected.
Light curtain for muting
ReeR Safegate is a light curtain, especially for muting applications. The Safegate series consists of light curtain who can be configurated. The Safegate SMPO series can be adjusted to your wishes using Safegate configuration software (SCS). You can save the relevant configuration and then simply copy it to a new arrangement of your light curtains. Read more about muting light curtains.
What is blanking at a light curtain?
In machines or installations with moving parts where a light curtain is interrupted by moving parts, it may occur that at least one beam is interrupted. To ensure that a light curtain does not respond to this, a blanking function is used. With this function, the light curtain accepts that a number of beams are interrupted. The light curtain reacts only when the number of beams is preset.
Light curtain for measurement (non-safety)
ReeR micron detection light curtain
ReeR Micron is a light curtain for detection and measurement of objects. Depending on the number of beams available, a measurement light curtain can transmit real-time information to a PLC or PC. Detection light curtains can detect the number of passed objects, detect position, detect shape or profile and measure dimensions. Read more about ReeR Micron detection light curtains.
Light curtain with mirror
By using a light curtain with a mirror, a long distance can be bridged with only one set of light curtains. Normally you are forced to use two sets of light curtains. By using a mirror, the beams can be guided around an angle. By using a passive mirror, the mirror reflects the beams. The beams are then received by the transmitter so a light curtain with a passive mirror only consists of a transmitter and a passive mirror. You save the receiving light curtain (receiver). Cost saving is an advantage here, but it is especially suitable when there is no room for mounting the receiver or space for wiring in the machine or installation.
Light curtains with internal monitoring or external monitoring
Light curtain with internal monitoring
A light curtain with internal mornings is equipped with safety contacts (EDM). The safety contacts ensure safe operation of the light curtain and ensure safe operation. Because the safety contacts are part of the light curtain, you do not need to use an additional safety relay.
Light curtain with external monitoring
With a light curtain with external monitoring, you are always obliged to use an additional safety relay with safety contacts. In many cases, a ReeR ADSR 1 or ReeR Mosaic configurable safety relay is used.
Mounting and cabling of light curtain
A transmitter and receiver of a light curtain must always be connected separately. ESCHA cabling has connectors and cables with a loose end with which light curtains can be connected. View cables for light curtains.
Mounting of light curtain
A light curtain can be mounted in different ways. In many cases, there is space in a machine or installation to mount light curtains, but this can not always be as simple as it seems. Vibrations can cause unclear defects of a light curtain. Especially for this, ReeR has mounting brackets that reduce vibration. View mounting for light curtains.
With a mirror, it is possible to bridge a difficult angle with a light curtain. It is also possible to use mounting brackets so that a light curtain is mounted at an angle of 90 degrees.
Light curtain for welding applications
Welding sparks within a welding application can cause problems for the operation of light curtains. Especially for this, ReeR has developed a protective cap for light curtains. The protective cap is placed over the light curtain so that the light curtain is resistant to welding sparks.
Configurable safety relay ReeR Mosaic
Set up your safety system yourself with the configurable safety relay ReeR Mosaic. The Mosaic series consists of different modules, each with its own function. You are not forced to purchase an expensive package. You put together your own safety system based on the different modules. The security system can be configured using the supplied software. By means of 'drag and drop software' you make an overview of your situation. With the help of the Mosaic memory card you can easily transfer your configuration to a new setup. Setting up a safety system not only has the advantage that it is modular and can be built to your own preferences, you can also incorporate multiple parts within your machine or installation into your safety system. Read more about configurable safety relays.
The different modules have the following functions:
- Main module ReeR M1
- Safety relay
- Speed monitoring
- Data communication
- Extra inputs
- Extra outputs
Application example safety light curtains and configurable safety relay
In this application example, the trucks drive in and out of the secured situation. Light curtains, closed and secure entrance doors, moving robot cells and emergency stop buttons are used. The situation is discussed beforehand and then it is explained how a safety system is set up with the help of the programmable safety relay ReeR mosaic. Read the application example.
MOUNTING BRACKETS FOR SAFETY SCREENS
The SFB mounting brackets from ReeR are adjustable mounting brackets. The two plastic brackets make it possible to accurately adjust the position of the light curtain horizontally and vertically. The circular clamps ensure that the light curtain can rotate along the longitudinal axis.
In order to perform the rotation, the upper and lower clamps, which are fixed with M4x10 screws, must be loosened. As soon as the clamps are loose, the desired rotation can take place. If the light curtain is positioned at the desired location, the clamps must be reattached
The SFB adjustable / rotatable mounting brackets are suitable for Admiral, Vision and Metron light screens. For EOS light curtains there are SFB-E mounting brackets with 4 or 6 pieces, depending on the height of the safety light curtains, SFB E-180 and SFB FAST. For Safegate light screens there are the SFB-SG (4/6) mounting brackets. For Janus light screens there are the SFB 4J mounting brackets.