GL-R40H Keyence Safety Light Curtain – Type 4, Hand Protection, 40 Beam Axes
The GL-R40H is a robust Type 4 safety light curtain from the GL-R series. It comes as a matched transmitter and receiver set. This hand protection model uses 40 beam axes with 20 mm spacing. Detection capability is ø25 mm. Detection height reaches 780 mm. Total length is 800 mm. The infrared LED runs at 870 nm. Detecting distance spans 0.2 to 15 m. Response time on OSSD is max. 8.7 ms. This curtain guards larger openings where hands enter the hazard zone.
Core Detection Data
- Model: GL-R40H
- Brand: Keyence
- Series: GL-R series
- Type: Type 4 ESPE / AOPD, transmitter + receiver set
- Protection type: Hand protection
- Detection capability: ø25 mm
- Beam axes: 40
- Beam axis spacing: 20 mm
- Detection height: 780 mm
- Total length: 800 mm
- Detecting distance: 0.2 to 15 m
- Light source: Infrared LED, 870 nm
- Effective aperture angle: max. ±2.5° at 3 m or more
- Response time (OSSD, ON→OFF): max. 8.7 ms
- Synchronization: optical or wire, set by wiring
- Interference prevention: up to 2 GL-R systems, Channel A/B for optical, automatic for wire
Electrical Ratings and Safety Standards
- Supply voltage: 24 VDC ±20%, ripple 10% or less, Class 2
- OSSD: 2 transistor outputs, PNP or NPN by cable type, max. 500 mA load
- Residual voltage ON: max. 2.5 V at 5 m cable
- OFF-state voltage: max. 2.0 V at 5 m cable
- Leakage current: max. 200 µA
- Max. capacitive load: 2.2 µF; load wiring resistance: max. 2.5 Ω
- Auxiliary output: AUX / error / muting-lamp transistor, PNP/NPN by cable, max. 50 mA
- Safety standards: IEC61496-1/-2 Type 4, IEC61508 SIL3, IEC62061 SIL CL3, EN ISO13849-1 Category 4 PLe, UL508, UL1998
- EMC: IEC/EN61496-1, EN55011 Class A, FCC Part15B Class A, ICES-003 Class A
- Protection circuit: reverse-current, per-output short-circuit, surge protection
- Current draw with indicator ON: transmitter max. 65 mA, receiver max. 76 mA
Environment and Build
- Operating temperature: -10 to +55 °C without freezing
- Storage temperature: -25 to +60 °C without freezing
- Humidity: 15 to 85 % RH operating, 15 to 95 % RH storage, no condensation
- Ambient light: incandescent 3,000 lux or less, sunlight 20,000 lux or less
- Protection rating: IP65 / IP67 per IEC60529
- Overvoltage category: II
- Main unit: aluminum
- Upper and lower case: nylon with 30% glass fiber
- Front cover: polycarbonate and SUS304
- Weight: transmitter 1110 g, receiver 1110 g
Oiltech Controls Insight
- 800 mm length covers wide machine openings in one unit.
- 20 mm beam spacing balances coverage and cost.
- 15 m range suits large work cells and long conveyors.
- 8.7 ms response keeps safety distance short on fast machines.
- Type 4 PLe and SIL3 ratings meet high-risk guarding rules.
- Optical sync reduces cable runs across the opening.
- Channel A/B switching lets two GL-R pairs share one area.
Compatible Equipment
- Safety relays and safety controllers
- Presses, shears, and forming machines
- Robot cells with wide entry points
- Palletizing and material handling lines
- Assembly stations with hand access
- Automated storage and retrieval systems
- Machines needing Category 4 PLe guarding
Why Buy From Oiltech Controls?
- Over 15 years in industrial automation spare parts
- Shipment support to customers worldwide
- Tested surplus and refurbished options available
- 12-month warranty on eligible products
- Technical check before every dispatch
- Help sourcing obsolete control systems
- Dispatch in 24 to 28 hours via FedEx, UPS, or DHL
Five Professional FAQ
Q: How is GL-R40H different from the finger protection model?
A: GL-R40H detects ø25 mm objects with 20 mm beam spacing. Finger models detect ø14 mm with 10 mm spacing. Pick GL-R40H for hand access. Pick the finger model when fingers can reach the hazard.
Q: Can the 15 m range work in a dusty plant?
A: Yes, but keep the lenses clean. Dust lowers beam strength over long distances. Use the AUX output to catch alignment drift early. Clean the front cover on a fixed schedule.
Q: Does the GL-R40H output feed a safety PLC directly?
A: The OSSD outputs can feed a safety PLC or safety relay. Check the input type first. Match PNP or NPN by selecting the correct cable. Never wire OSSD to a standard PLC input.
Q: How do I set up two GL-R40H pairs in one cell?
A: Use Channel A and B when running optical sync. Wire sync handles interference automatically. Keep the pairs aligned and avoid overlapping beams. Test both pairs after installation.
Q: What should I check before buying a used GL-R40H?
A: Inspect the front cover for scratches and haze. Confirm all 40 beams align and the OSSD switches. Test the AUX output. Verify the cable type matches your PNP or NPN needs. Oiltech Controls checks each unit before shipment.
Write to info@oiltechcontrols.com or message +86 158 8020 0923 on WhatsApp.
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