Light Barrier (Safety Light Curtain): Working Principle, Types & Machine Guarding Guide
Explore safety light curtains (light barriers) for machine guarding: principles, types...
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DAIDISIKE News & Insights
Latest updates on safety light curtains, LiDAR scanners, proximity switches and industrial safety solutions — curated for engineers and plant managers.
Featured Stories
Industrial Safety Wings: Comprehensive Comparison of DAIDISIKE DQA Series Safety Light Curtains...
Exploring the key differences and application scenarios between the DQA light curtain series...
LiDAR in Port Operations: A Frontline Deep Dive
“Call me Sam,” says the 42-year-old crane lead at a 24/7 container terminal...
Sealed Relay Ends Production Line Oxidation Woes: DAIDISIKE’s Zero-Failure Revolution
The maintenance lead kicked the cabinet door shut and watched the line fault counter...
Retrofitting Pneumatic Presses with Light Curtains: Safety and Throughput—Both, Not Either/Or
The plant engineer remembers the day the phone rang like it was yesterday...
What Is a Proximity Switch? Basics, Types & Wiring
A plain-English walkthrough of proximity switches for factory engineers.
Full News Archive
Schmersal SRB Safety Relay Alternatives — DAIDISIKE DA31
Cross-referencing Schmersal SRB safety relays (SRB-E, SRB200, PROTECT-SRB, SAFE 4.0) to the DAIDISIKE DA31 (PL e / SIL 3, 3NO+1NC, EDM, force-guided, <30 ms): match the safety function, input channels, output contacts and reset before you swap. Factory-direct, MOQ 1 set. With safety-relay EDM wiring and ISO 13849 architecture diagrams.
Siemens SIRIUS 3SK Safety Relay Alternatives — DAIDISIKE DA31
How the DAIDISIKE DA31 maps onto Siemens SIRIUS 3SK1 / 3SK2 safety relays for E-stop, safety-gate and light-curtain monitoring — PL e / SIL 3, EDM, what to verify before swapping (and when a configurable controller fits instead). Factory-direct sourcing.
Schneider Preventa Safety Relay & Light Curtain Alternatives — DAIDISIKE
Replacing Schneider Electric / Telemecanique Preventa XPS safety relays and XUSL light curtains with the DAIDISIKE DA31 (PL e / SIL 3) and DQC / DQA / DQT4 Type 4 curtains — function-match guidance, factory-direct, MOQ 1 set.
ABB Jokab Safety Alternatives (Eden, Focus, Relays) — DAIDISIKE
Mapping ABB Jokab Eden non-contact interlocks, Focus light curtains and Pluto / RT safety relays to DAIDISIKE DX-R1 magnetic-coded switches, DQC / DQA Type 4 curtains and the DA31 relay — with an honest note that Pluto is a programmable safety-PLC class device, not a hardwired single-function relay.
Safety Laser Scanner Alternatives (SICK, Omron, Keyence, Leuze) — DAIDISIKE DLD
An honest buyer's guide: how certified safety laser scanners (SICK microScan3/nanoScan3/S300, Omron OS32C, Keyence SZ-V, Leuze RSL) compare, and where the DAIDISIKE DLD-series LiDAR fits — obstacle avoidance & navigation for AGV/AMR — versus where a Type-3 certified safety scanner is still required for the safety-rated stop.
Allen-Bradley GuardShield Safety Light Curtain Alternatives — DAIDISIKE DQC
Cross-referencing Allen-Bradley / Rockwell Guardmaster GuardShield light curtains (450L, 440L) to DAIDISIKE DQC / DQA / DQT4 Type 4 curtains (IEC 61496-1/-2, PL e, 14–30 mm), paired with the DA31 relay for the safety stop. Factory-direct.
Palletizer / End-of-Line Muting Light Curtain — Application Case
A representative end-of-line palletizing cell: a DQC Type 4 light curtain guards the pallet exit with 4-sensor muting so full pallets pass while a person still stops the line — wired to a DA31 relay. Correct muting per IEC/TS 62046, ISO 13855 distance. With a muting-sequence flow diagram.
Mechanical Press Two-Hand Control + Light Curtain — Application Case
A representative power-press point-of-operation scenario: Type IIIC two-hand control (ISO 13851) for the operator plus a DQC Type 4 light curtain (ISO 13855) to protect others, wired through a DA31 relay — why two-hand control alone is not enough when others are nearby. With two-hand-control and press-safety-system diagrams.
AGV / AMR Fleet Obstacle-Avoidance LiDAR Integration — Application Case
A representative AGV/AMR intralogistics scenario: DLD-series LiDAR for obstacle avoidance & navigation (warning/protective fields → slow/stop), and — stated honestly — where a certified safety laser scanner is still required for the safety-rated stop per ISO 3691-4. With AGV field-zone and stationary-area scanner diagrams.
Safety Sensor Supplier for Thailand — Light Curtains, Scanners & Relays (EEC)
Factory-direct China safety sensors for Thailand's automotive & electronics base (Eastern Economic Corridor — Rayong/Chonburi/Chachoengsao): Type 4 light curtains with muting, DA31 safety relays, AGV laser scanners, guard-locking switches & proximity sensors vs Omron/SICK/Keyence/Autonics — TIS context, Laem Chabang shipping, MOQ 1 set. Includes ISO 13849 architecture & light-curtain muting diagrams.
DAIDISIKE Tech & Video Center
Wiring Guide, Safety Setup, and Maintenance Demos
We’ve put together these videos to help engineers and installers get things running. From wiring up OSSD and EDM to mounting light curtains on a press brake, we cover the real technical stuff. Whether you're troubleshooting faults or looking to swap out Omron, Keyence, or SICK sensors, you'll find the practical steps right here.
How to Wire Safety Light Curtains (OSSD & EDM)
A quick walk-through on hooking up dual-channel OSSD outputs. We show you how to handle the EDM feedback loop and connect NPN/PNP signals to your PLC or safety relay.
Setup: Press Brake & Power Press Guarding
Real-world demo showing Type 4 light curtains in action on a press brake. See how to integrate safety relays and keep the setup compliant with ISO 13855 standards.
Fixing EDM Faults & Alignment Issues
Stuck in a lockout? This video covers why EDM resets fail, how to read the LED fault codes, and tips for getting your beams perfectly aligned when things aren't triggering correctly.
Calculating & Mounting Safety Distance
Don't just guess the mounting spot. We show you how to apply ISO 13855 math in the shop to make sure nobody can reach the hazard before the machine hits a full stop.
Brand Swap: Replacing Omron, Keyence & SICK
Switching to DAIDISIKE? This guide helps you match up the height, resolution, and pin-outs so you can replace F3SG, SL-V, or deTec sensors without a headache.
AGV Safety & Perimeter Protection
See how to set up safety laser scanners for AGV/AMR paths. We show you how to define warning zones, protective fields, and speed-based zones for robotic areas.
DAIDISIKE Tech & Video Center
Advanced Sensor Solutions for Industrial Safety and Automation
DAIDISIKE Corporate Profile
Discover our commitment to precision engineering and manufacturing.
Safety Interlock DX Series
Real-world application for advanced machine safeguarding.
AGV LiDAR DLD30T-5N 40
Enhanced perimeter security and collision prevention solutions.
Vehicle DQLV Light Curtains
Optimized for toll stations and weighbridges profiling.
Measuring DQL Series 3D
Dimensional measurement and object positioning principles.
DQC Universal Grating
Installation guide for hand & finger safeguarding.
Waterproof DQR Series
Performance under high-pressure washdowns.
Color Mark Sensors
Intelligent recognition for high-speed packaging lines.
Strip DK-D461 Sensors
Advanced background suppression for irregular shapes.
Area DQSA Protection
Cost-effective side safeguarding using mirror reflection.