Panasonic SF2C-H28-N Ultra-slim Type 2 Safety Light Curtain

Technical Overview

Ultra-slim Type 2 safety light curtain for hand protection, 560mm height, Ø25mm minimum object detection, 20ms response, IP67.

Key Features

Ultra-slim design, only 13.2mm deep.
Type 2 PLc SIL1 safety rating for hand protection.
28 beam channels with a 20mm beam pitch.
Protective height of 560 mm.
Minimum detectable object of Ø25 mm.
Operating range of 0.1 to 3 meters.
Fast OFF response time of 20 ms or less.
Large bright built-in multi-purpose LED indicators.
Lightweight resin body (580g total for emitter and receiver).
IP67 (IEC) rating for environmental protection.
Easy alignment and installation (±5° effective aperture angle).
Simple 5-wire wiring for emitter and receiver with optical synchronization.
RoHS compliant.

Technical Specification Matrix

Parameter	Value
Part Number	SF2C-H28-N
Product Name	Ultra-slim Light Curtain [Type 2 PLc SIL1] SF2C
Number of Beam Channels	28
Protective Height	560 mm (22.047 in)
Minimum Detectable Object	Ø25 mm (Ø0.984 in)
Beam Pitch	20 mm
Operating Range	0.1 to 3 m
Emitter Current Consumption (Indicators Off)	35 mA or less
Receiver Current Consumption (Indicators Off)	35 mA or less
Emitter Current Consumption (Indicators On)	45 mA or less
Receiver Current Consumption (Indicators On)	45 mA or less
PFHD (NPN output type)	4.05 × 10^-9
MTTFD	100 years or more
Operating Temperature	-10 to 55 °C
Supply Voltage	24 VDC ±20% Ripple P-P 10% or less
Output Type	NPN
Light Source	Infrared LED
OFF Response Time	20 ms or less
ON Response Time	80 to 100 ms
Total Response Time	100 ms max
IP Rating	IP67 (IEC)
International Standards	IEC 61496-1/2 (Type 2), ISO 13849-1: 2015 (Category 2, PLc), IEC 61508-1 to 3 (SIL 1)
EU Standards	EN 61496-1/2 (Type 2), EN 55011 Class A, EN 61000-6-2, EN ISO 13849-1: 2015 (Category 2, PLc)
US/Canada Standards	ANSI/UL 61496-1/2 (Type 2), ANSI/UL 508, CAN/CSA 61496-1/2 (Type 2), CAN/CSA C22.2 No.14, ANSI/RIA 15.06
Japan Standards	JIS B 9704-1/2 (Type 2), JIS B 9705-1 (Category 2), JIS C 0508 (SIL1)
Physical Weight (kg)	0.58
Dimensions L x W x H (cm)	58.4 x 3 x 1.3

Industrial Applications

1. Point of Operation Safeguarding on Small Presses

The SF2C-H28-N light curtain can be used to protect operators from hazards at the point of operation on small stamping presses, assembly machines, or sealing equipment. Its 560mm protective height is suitable for hand access areas, and the 25mm minimum detectable object ensures that a hand or finger entering the area is detected.

Problem Solved

Prevents severe hand injuries by immediately stopping machine operation if an operator's hand or arm breaches the light curtain's sensing field during the machine cycle.

Point of operationhand protection560mm protective height25mm minimum detectable object20ms response timeType 2 PLc SIL124VDC

2. Access Guarding for Robotic Work Cells

In a compact robotic work cell, the SF2C-H28-N can define a safety perimeter to detect personnel entry. Its ultra-slim design allows for installation in space-constrained areas around the robot, without obstructing robot movement or material flow. The IP67 rating ensures durability in industrial environments.

Problem Solved

Ensures that robots safely stop or enter a safe state before personnel can enter the hazardous operating zone, preventing collisions and potential injuries, especially in confined spaces.

Robotic safetyaccess guardingsafety perimeterultra-slim design (13.2mm deep)IP670.1-3m operating rangeNPN output

3. Material Handling Equipment Intrusion Detection

This light curtain can be integrated into automated material handling systems, such as conveyors or pick-and-place units, to detect unintended human intrusion or misplaced objects within a critical zone. The ability to use separate power supplies for emitter and receiver simplifies wiring in distributed systems.

Problem Solved

Enhances operational safety by detecting unauthorized access or foreign objects in automated material flow paths, thereby preventing equipment damage, product contamination, or operator injury without complex interconnections.

Intrusion detectionmaterial handlingconveyor safety28 beam channels0.1-3m operating rangeoptical synchronization5-wire connectionresin body