Key Features

High Safety Integrity: Complies with IEC 61496-1/2 Type 4 standards. It achieves a Performance Level (PL) e according to ISO 13849-1 and a Safety Integrity Level (SIL 3) according to IEC 62061, making it suitable for protecting against serious injuries.

14 mm Resolution: The beams are spaced 14 mm apart. This fine resolution is designed to detect the presence of fingers or small tools, preventing them from reaching hazardous areas. It is a common resolution for perimeter guarding where closer access is possible.

Muting Function Ready (NMB): The "M" in the order code indicates this device is equipped for muting. This allows the safety function to be temporarily and safely suspended by external sensors (e.g., photoelectric cells) to permit the passage of materials on a conveyor through the protected field without stopping the machine, while still protecting personnel.

Extended Range: Offers a long standard sensing range of up to 20 meters, which can be further extended to 70 meters using reflectors (retroreflectors). This makes it ideal for safeguarding large areas or long production lines.

Integrated Diagnostics: Powerful status and diagnostic LEDs on both the emitter and receiver provide clear visual feedback on alignment, power, output signal status, and faults, enabling quick commissioning and troubleshooting.

Robust Design: Features a sturdy aluminum housing with polycarbonate end caps and a high IP65/IP67 protection rating, ensuring reliable operation in dusty, wet, and demanding industrial environments.

3. Technical Specifications

Parameter Specification
Order Number LFP0400-A4NMB
Type Type 4 Safety Light Curtain (IEC 61496-1/2)
Safety Rating PL e (ISO 13849-1), SIL 3 (IEC 62061)
Protective Height 400 mm (Other heights available in the series)
Resolution 14 mm (Beam Spacing)
Standard Sensing Range 0.5 m ... 20 m (Extendable to 70 m with reflectors)
Response Time ≤ 20 ms
Output Signals 2 x OSSD (Output Signal Switching Device) safety outputs (PNP). These are solid-state outputs that constantly cross-check each other for faults.
Control Inputs Configurable for functions like Muting, Start/Restart Interlock, and Blanking.
Supply Voltage 24 V DC (-15% / +20%)
Connection 12-pin M12 connector
Housing Material Aluminum profile, polycarbonate end caps
Protection Rating IP65 / IP67
Operating Temperature -10 °C ... +50 °C (with icing), up to +55 °C without icing
4. Typical Applications

The LFP0400-A4NMB is designed for safeguarding larger perimeters and access points to hazardous areas.

Perimeter Guarding: Securing the access gates and fences around robotic cells, large presses, or automated assembly lines.

Conveyor Line Access Points: Protecting areas where conveyors pass through walls or fences, often using its muting function to allow product flow.

Packaging & Palletizing Lines: Area protection around the moving parts of large automated packaging machinery.