Application areas/ Target groups
Optimal and economic solutions for individual requirements
Safety light curtains/light grids are used wherever hazardous locations and areas need to be secured reliably and economically. Depending on the variation, different safety functions are integrated or can be implemented using safe control solutions.
The range includes small and compact designs up to extremely robust and resilient variations for special environmental conditions up to the highest safety level.
Type 4 (IEC 61496), SIL 3 (IEC 61508), PL e (EN ISO 13849) Type 2 (IEC 61496), SIL 1 (IEC 61508), PL c (EN ISO 13849)
Your benefit
- Easy assembly thanks to innovative and flexible mounting systems
- Quick commissioning through integrated LED display / 7-segment display and automatic calibration of protective field width up to 60 m range
- Simply safe: robust and reliable with protection type IP 65/67 for use under rough environmental conditions
- Intelligently standardized: Connection technology M12 or terminal compartment for connecting standard cables
- Basic functions without configuration effort enable rapid replacement for service purposes
- Cascading of several safety light curtains possible
- Beam blanking possible
- Beam switching over tilted mirror
Fields of application/Target groups
- Automobile / Automotive and Supplier industry
- Machine tools
- Woodworking machines
- Machines and custom machine construction
- Metalworking
- Sheet metal work
- Stone and construction industry
- Warehouse and distribution centers
- Consumer goods and packaging machines
System range
Features of Fessler Accident Protection Light Curtains
- Type 4 (IEC 61496), SIL 3 (IEC 61508), PL e (EN ISO 13849)
- Type 2 (IEC 61496), SIL 1 (IEC 61508), PL c (EN ISO 13849)
- Finger and handguard, pedestrian access protection
-
High ranges up to 60 m (finger guard up to 10 m, Handguard up to 30 m, pedestrian access protection up to 60 m)
- Protective feld heights of 100 mm to
2500 mm in 100 mm increments (Special lengths upon customer request) - OSSD, transistor order relay output available
- User-friendly
- Compact and robust
- Economical
Short response times- Different designs and versions, appropriate for every application
- – Integrated switchgear
- – Cascading
- – Blanking function (beam blanking)
– Reduced resolution
- Selectable EDM contactor control
- Selectable RES restart interlock
- Muting function
- Sequencing control 1-4 cycle
- Emergency stop circuit monitoring
Different connection types available (integrated terminal compartment, M 12 or other upon customer request)- Customer-requested modifications possible
- Various accessories
Type 4 – ULCT/BLCT Type 2 – TLCT/ILCT
Compact safety light curtains
|
|
| Protection (protection type: IP 65) | Resolution | |
|---|---|---|
| ULCT/BLCT | Hazardous area protection, area guarding, fnger protection |
14 mm |
| ULCT | Hand protection | 30 mm |
| Cascading | All safety light curtains Available as cascading |
14 mm or 30 mm |
The safety light curtains of the series …LCT are available as optimized for all applications.
Features
- ULCT/BLCT: Safety category 4 (EN 954-1 and IEC 61496 Part 1 + Part 2 or EN 61496) SIL 3 (EN 61508) Performance Level PL e (ISO 13849-1)
- TLCT/ILCT: Safety category 2 (EN 954-1 and IEC 61496 Part 1 + Part 2 or EN 61496) SIL 1 (EN 61508) Performance Level PL c (ISO 13849-1)
- Contactor control and restart interlock Integrated functions can be programmed without a PC
- Contactors /valves can be connected directly, switching capacity 0.5 A/24 V
- Beam spacing: 8.33 mm, 25 mm (resolution: 14 mm, 30 mm)
- Protective feld widths (range): 5 m
- Semiconductor outputs with short-circuit and cross-circuit monitoring
- Blanking function
Response time
Depending on overall length: smallest safety clearance due to short response times
- ULCT Basic time 4 ms–20 ms
- BLCT Basic time 7 ms–29 ms
Operating modes
- With/without restart interlock
- With/without contactor control (EDM)
- 11 Beam blanking types (BLCT)
- Cascading (… LCT-K)
with optional safety controls
- Muting (bypass unit)
- Cycle operation 1-cycle/4-cycles (e.g. for insertion operations)
- Emergency stop circuit-/ safety door monitoring
- Potential-free relay outputs
- Program beam blanking (BLCT) etc
Type 4 – ULVT/BLVT Type 2 – TLVT/ILVT
Safety light curtains Safety light grids
|
|
| Protection | Resolution | |
|---|---|---|
| ULVT | Finger and hand protection or pedestrian access protection | 14-500 mm |
| BLVT | Finger and hand protection or pedestrian access protection with blanking function | 14-500 mm |
| ULVT500/2R | Pedestrian access protection with an active transmitter/ receiver unit and a passive tilted mirror unit | 500 mm |
| Cascading | All safety light curtains available as cascading | 14-500 mm |
The safety light curtains of the series …LVT are available as optimized for all applications.
Response time
The light curtains of the series …LVT are characterized by their particularly rapid response
times. This reduces the safety clearance of the light curtain before the hazardous location.
Controller integrated
The restart interlock and contactor control required for Type 4, PL e, SIL 3 is integrated in the receiver as standard. Additional safety controller is therefore not required for safe operation.
Operating modes
The required operating mode has a user-friendly set up via DIP switches. A PC for programming is not required.
Contactor/Valves can be connected directly
The switching capacity of 0.5 A/24 VDC of both fail-safe outputs (OSSD1 and OSSD2) enables the direct connection of contactors or valves.
LED indicators
Several LEDs on the receiver and transmitter indicate the respective operating state. Protective feld interruptions, contamination, start request or errors are quickly and clearly recognizable.
Self-diagnostics system
If the system detects an internal or external error, the machine is immediately switched off and the LEDs in the transmitter or in the receiver will fash to show the error condition to the user. An optional error diagnostic device enables accurate localization on site. The detected error is output optically and displayed in the error diagnostics device.