Panasonic SF2C-H20-N Ultra-slim Safety Light Curtain

Technical Overview

Type 2, PLc, SIL1 ultra-slim safety light curtain for hand protection, 400mm height, 20mm beam pitch, 25mm MDO, IP67 rated, 24VDC.

Key Features

Ultra-slim design with only 13.2mm depth.
Type 2, PLc, SIL1 Safety Rating (IEC 61496-1/2, ISO 13849-1, IEC 61508).
Hand protection with a minimum detectable object of Ø25mm and a 20mm beam pitch.
Protective height of 400mm.
IP67 ingress protection for harsh industrial and washdown environments.
Wide operating range of 0.1 to 3 meters.
Pre-wired with a 3-meter 5-core heat-resistant PVC cable.
Equipped with one NPN open-collector safety output (24Vdc, 60-200mA).
Utilizes Infrared LED with 850nm wavelength.
Features bright, built-in multi-purpose LED indicators for easy status monitoring.
Easy alignment and installation due to a ±5° effective aperture angle.
Constructed with a robust polycarbonate alloy housing and sensing surface, and stainless steel mounting brackets.

Technical Specification Matrix

Parameter	Value
Part Number	SF2C-H20-N
Product Type	Ultra-slim Safety Light Curtain
Safety Type	Type 2 PLc SIL1 (ISO 13849-1, IEC 61508)
Protection Type	Hand protection
Number of Beam Channels	20
Beam Pitch	20 mm
Minimum Detectable Object	Ø 25 mm
Protective Height	400 mm
Operating Range	0.1 to 3 meters
Supply Voltage	24 VDC ±20% (Ripple P-P 10% or less)
Current Consumption (Emitter, indicators off)	≤ 35 mA
Current Consumption (Receiver, indicators off)	≤ 35 mA
Current Consumption (Emitter, indicators on)	≤ 40 mA
Current Consumption (Receiver, indicators on)	≤ 40 mA
Digital Outputs	1 x NPN open-collector, 24Vdc, 60-200mA (Safety output)
Response Time (OFF)	≤ 20 ms
Response Time (ON)	80 to 100 ms
Wavelength	850 nm (Infrared LED)
Degree of Protection	IP67 (IEC)
Operating Temperature	-10 to +55 °C
Housing Material	Polycarbonate alloy
Sensing Surface Material	Polycarbonate alloy
Mounting Bracket Material	Stainless steel
Physical Weight (kg)	0.46
Dimensions L x W x H (cm)	47.4 x 1.32 x 3

Industrial Applications

1. Small Parts Assembly Machine Guarding

Integration into automated assembly lines where small to medium-sized components are handled, requiring precise hand protection to prevent operator injury from moving parts.

Problem Solved

Prevents accidental hand entry into hazardous zones of automated machinery while maintaining a compact footprint. The 25mm minimum detectable object ensures hands are protected, and the 400mm protective height covers common access points. The ultra-slim 13.2mm depth allows installation in tight spaces where traditional safety fences or larger light curtains would not fit.

Machine safetyhand protectionautomated assemblycompact designType 2 safetysmall object detection

2. Food Processing Equipment Safety Barrier

Used as a safety barrier on food processing machinery (e.g., slicing, mixing, packaging lines) in environments requiring frequent washdowns and strict hygiene.

Problem Solved

Ensures operator safety by detecting hand presence in hazardous areas of food processing equipment. The IP67 rating guarantees resistance to water jets and dust, making it suitable for washdown cycles, while the -10 to +55°C operating temperature range accommodates typical food processing environments. The Type 2 PLc SIL1 safety standard meets general industrial safety requirements.

Food safetywashdown environmentIP67operator protectionprocessing machineryType 2 safety

3. Robotic Workcell Access Protection

Establishing a safety perimeter around smaller robotic workcells or pick-and-place robots, where human intervention might be occasional but safety is paramount.

Problem Solved

Provides a reliable safety zone to stop robotic operation upon human entry, protecting personnel from collisions or entrapment. The 0.1 to 3-meter sensing range is ideal for defining access points to robotic cells, and the 400mm protective height is suitable for restricting hand access. Its robust construction and wide temperature range ensure reliable operation in an industrial setting.

Robotic safetyaccess controlhuman-robot collaborationindustrial automationsafety zoneType 2 safety