DAIDISIKE Tech & Video Center
Wiring, Mounting, Troubleshooting, and Brand-Swap Tutorials for Industrial Safety Light Curtains
These videos exist because of the questions our engineering team gets on the phone every week. The recurring ones — how do I wire OSSD with EDM, where do I mount the curtain on a press brake, my brand-new install is stuck in lockout, I'm replacing an Omron F3SG, what do I order — all have practical answers that are faster to show than to write. Six short videos cover the topics that account for roughly 80% of the “please send a video” requests we receive. Below each topic group, you'll find cross-links to the deeper written guides for the engineers who prefer to read or want the reference material for their library.
Wiring & Integration
Safety light curtains have more wiring decisions than they look like. The output side has OSSD vs relay vs solid-state options. The feedback side has EDM (external device monitoring) that needs to see contactor or relay echo. The PLC side wants either PNP or NPN, with the right input-card polarity. These two videos walk through the wiring on a real installation, showing where the common mistakes happen and what the LED indicators tell you when something's wrong.
How to Wire Safety Light Curtains (OSSD & EDM)
A walk-through on hooking up dual-channel OSSD outputs. We show how to handle the EDM feedback loop and connect NPN/PNP signals to your PLC or safety relay. Covers the wiring mistakes that cause the curtain to lock out on first power-up, the LED codes that point at the cause, and the cabinet-side fixes that get you out of lockout in under five minutes.
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 the beams perfectly aligned when triggers aren't firing correctly. Includes the contactor-welding diagnostic that's behind 70% of EDM lockouts.
Mounting & Safety-Distance Math
ISO 13855 gives you the formula for safety distance: S = K × T + C, where K is the body approach speed, T is the total stopping time, and C is the intrusion-depth constant. Sounds simple — but the K and C values depend on whether you're protecting fingers (14 mm resolution) or whole-body access (40+ mm resolution), and the T value has to include the light curtain's own response time, the safety relay's response time, and the machine's stopping time. The videos below take you through real installations on press brakes and stamping presses, with the calculations done on-screen so you can follow along on your own machine.
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 / ISO 16092 standards. Includes the mounting-bracket layout that handles ram-travel and the foot-pedal interlock wiring for two-hand control.
Calculating & Mounting Safety Distance (ISO 13855)
Don't just guess the mounting spot. We show how to apply ISO 13855 math in the shop to make sure nobody can reach the hazard before the machine hits a full stop. Walks through K, T, and C values for finger / hand / whole-body protection, with the calculation written out on-screen for a typical 14 mm finger-protection setup.
Application Setup — AGV & Brand Replacement
Two of the most-asked questions in our inbox: 'how do I set up a safety laser scanner on my AGV?' and 'I'm replacing an Omron F3SG / Keyence SL-V / SICK deTec — what DAIDISIKE part fits?' The first video covers AGV/AMR safety zones — warning zones, protective fields, speed-based zone switching. The second is a brand-replacement walkthrough that maps physical dimensions, sensing height, resolution, and pin-out compatibility so you can swap without re-engineering the cabinet.
AGV Safety & Perimeter Protection with Safety Laser Scanners
Set up safety laser scanners for AGV/AMR paths. We show how to define warning zones, protective fields, and speed-based zones for robotic areas. Includes the multi-zone switching logic for a fork-truck that needs different protective fields at travel speed vs docking speed.
Brand Swap: Replacing Omron F3SG, Keyence SL-V & SICK deTec
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. Covers mounting-bracket compatibility, the M12 connector pinout differences, and the OSSD response-time matching that keeps your safety calc valid.
Deeper Reading — Companion Articles to These Videos
Light Curtain Safety Relay Wiring — Full Guide
Step-by-step on OSSD, EDM, contactor monitoring, and PLC integration.
Interactive ISO 13855 Safety Distance Calculator
Plug in your speed, stopping time, and resolution — get the safety distance number.
Press Brake Laser Guard Installation & Wiring Manual
DKE-L3 laser-guard install procedure for bending machines and shears.
EDM Lockout Won't Reset — Diagnosing K1/K2 Contactor Welding
The fault behind most EDM lockouts, and the test that confirms it in 30 seconds.
Safety Light Curtain Category Overview
DQA / DQC / DQE / DQO / MK families — selection by application.
Safety Scanner vs Industrial LiDAR for AGV/AMR
When to pick a safety-rated scanner vs a navigation LiDAR for mobile robots.
Questions We Get After People Watch the Videos
I just powered up a new safety light curtain and it's stuck in lockout. What do I check first?
Three things, in this order: (1) Confirm the EDM (external device monitoring) feedback wire is correctly wired to the contactor's normally-closed mirror contact, not the normally-open. About 70% of new-install lockouts trace to a swapped EDM wire. (2) Check the LED indicator pattern against the chart in the manual — most curtains code the lockout cause as a number of blinks or a specific color. (3) Confirm beam alignment with the receiver-side indicator at full brightness. The 'Fixing EDM Faults' video at the top of this page walks through all three checks on a real cabinet.
How do I calculate the safety distance for my press brake?
ISO 13855 formula: S (mm) = K × T + C. K is the human approach speed in mm/s — use 2000 mm/s for hand approach. T is total stopping time including the light curtain response, safety relay response, and machine stopping time in seconds — most press brakes are 150-300 ms total. C is the intrusion-depth constant: 8 × (resolution − 14) mm for resolutions above 14 mm, or 128 mm minimum for whole-body protection. The 'Calculating & Mounting Safety Distance' video shows a worked example for a 14 mm finger-protection setup. Or use our interactive calculator at /iso-13855-safety-distance-calculator.
Can I directly swap a DAIDISIKE light curtain for an Omron F3SG or Keyence SL-V?
In most cases yes — DAIDISIKE DQA / DQC / DQE families ship with mounting brackets compatible with the common Omron, Keyence, SICK, and Pilz bolt patterns, and the M12 connector pinouts follow the IEC 61076-2-101 industrial convention. The 'Brand Swap' video on this page walks through the height-to-height, resolution-to-resolution, and OSSD-response-time mapping. The key check: confirm the OSSD response time on the new sensor is no slower than the original, otherwise the ISO 13855 safety distance you previously calculated may no longer hold.
How do I configure protective and warning zones on a safety laser scanner for my AGV?
Use the manufacturer's configuration software to draw the zones graphically on top of a top-view diagram of the AGV's footprint. Define a small immediate protective zone (typically 0.3-0.5 m beyond the bumper at travel speed) that triggers an immediate stop, and a larger warning zone (1-1.5 m) that triggers a slow-down. Modern scanners support multi-zone switching driven by AGV speed inputs — at docking speed, a much smaller protective zone is acceptable. The 'AGV Safety' video on this page shows the zone-drawing process in real time on a fork-truck retrofit.