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15+ years industrial automation spare parts experience
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GL-R44H Keyence Safety Light Curtain | GL-R Series Type 4, Hand Protection, 44 Beams
The GL-R44H is a Type 4 safety light curtain from the GL-R series. It ships as a matched transmitter and receiver set. The pair forms a Type 4 ESPE/AOPD system. Detection capability is ø25 mm for hand protection. It carries 44 beam axes with 20 mm spacing. Detection height reaches 860 mm. Total length is 880 mm. Detecting distance spans 0.2 to 15 m. OSSD response time is max 9.2 ms. The infrared LED runs at 870 nm. Synchronization works by optical or wire method, set by wiring. Active production confirmed as of 2026-09.
Oiltech Controls’s Insight
- The GL-R44H guards hands at a 25 mm resolution.
- Because the 15 m range is long, it fits wide machine openings.
- Also, IP65/IP67 sealing handles coolant mist and dust.
- As a result, it suits robot cells and palletizing zones.
- Furthermore, optical sync removes extra wiring between the two bars.
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- Good match for press, robot, and assembly guarding.
- Because it meets PLe and SIL3, safety relays pair easily.
- Also, two GL-R systems can share one space with channel switching.
- However, OSSD type depends on cable. Order the right one.
- As a result, it drops into existing GL-R guard designs.
Best Fit Equipment
- Safety relays and safety controllers
- Robot cells and welding stations
- Presses and forming machines
- Palletizers and large packaging guards
- Muting and AUX lamp circuits
Technical Data
- Brand: Keyence
- Model: GL-R44H
- Series: GL-R series
- Type: Type 4 safety light curtain, hand protection
- Set: Transmitter + Receiver (Type 4 ESPE/AOPD)
- Synchronization: Optical or wire, set by wiring
- Light source: Infrared LED, 870 nm
- Effective aperture angle: Max ±2.5° at 3 m or more
- Detection mode: ON when zone is clear
- Interference prevention: Up to 2 GL-R systems
- Detection capability: ø25 mm
- Beam axes: 44
- Beam axis spacing: 20 mm
- Detection height: 860 mm
- Total length: 880 mm
- Detecting distance: 0.2 to 15 m
- Response time: Max 9.2 ms (OSSD, channel 0, ON to OFF)
- Supply voltage: 24 VDC ±20%, Class 2
- OSSD: 2 transistor outputs, PNP or NPN by cable, max 500 mA
- Residual voltage ON: Max 2.5 V (5 m cable)
- OFF-state voltage: Max 2.0 V (5 m cable)
- Leakage current: Max 200 µA
- Max capacitive load: 2.2 µF
- Load wiring resistance: Max 2.5 Ω
- AUX output: Error and muting-lamp, max 50 mA
- Safety standards: IEC61496-1/-2, IEC61508 SIL3, IEC62061 SIL CL3, EN ISO13849-1 Cat 4 PLe, UL508, UL1998
- EMC: IEC/EN61496-1, EN55011 Class A, FCC Part15B Class A, ICES-003 Class A
- Protection circuit: Reverse-current, short-circuit, surge
- Current: Transmitter max 66 mA; Receiver max 77 mA
- Operating temperature: -10 to +55 °C, no freezing
- Storage temperature: -25 to +60 °C, no freezing
- Humidity: 15 to 85 % RH operating; 15 to 95 % RH storage
- Ambient light: 3,000 lux incandescent; 20,000 lux sunlight
- Protection rating: IP65/IP67 (IEC60529)
- Overvoltage category: II
- Material: Aluminum body, nylon GF30% case, polycarbonate and SUS304 front cover
- Weight: Transmitter 1220 g; Receiver 1220 g
Shipping and Warranty
- 12-month warranty from Oiltech Controls
- Also, orders ship in 24 to 28 hours
- Carriers include FedEx, UPS, and DHL
- Furthermore, a tracking number is provided
- Global delivery is supported
Why Buy From Oiltech Controls?
- Over 15 years in industrial automation spare parts
- Worldwide shipment support
- Tested surplus and refurbished options available
- 12-month warranty on every order
- Technical check before dispatch
- Help for obsolete control systems
FAQ
Q: How do I pick between the GL-R44H and a finger protection model?
A: Use the GL-R44H for hand protection at 25 mm resolution. Choose a finger type at 14 mm when the guard opening is small.
Q: Can I run two GL-R44H pairs side by side?
A: Yes. Up to 2 GL-R systems can share a space. Set channel A/B for optical sync, or use automatic switching for wire sync.
Q: What cable do I need for PNP or NPN OSSD?
A: The cable type sets PNP or NPN. Therefore, confirm your safety relay input type before ordering.
Q: Does the 15 m range need a larger aperture angle setting?
A: No. The aperture angle holds at max ±2.5° once the distance is 3 m or more.
Q: What should I check before buying a used GL-R44H?
A: Confirm all 44 beams align, OSSD switching works, and lenses are clear. Also, check the cable for cuts. Oiltech verifies each unit before shipment.
Contact
Email: info@oiltechcontrols.com
WhatsApp: +86 158 8020 0923
Copyright © 2026 Oiltech Controls Limited. https://www.oiltechcontrols.com/ All rights reserved.
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