GL-R31F Keyence Safety Light Curtain Finger Protection

Keyence GL-R31F Type 4 Safety Light Curtain – Finger Protection, 31 Beams, 320 mm

Technical Specifications

• Brand: Keyence
• Model: GL-R31F
• Series: GL-R series
• Category: Type 4 safety light curtain (ESPE / AOPD)
• Protection type: Finger protection with ø14 mm detection capability
• Beam axes: 31 axes, 10 mm beam spacing
• Detection height: 300 mm; total length 320 mm
• Detecting distance: 0.2 to 10 m
• Response time: Max. 7.8 ms (OSSD, channel 0, ON→OFF)
• Light source: Infrared LED at 870 nm
• Effective aperture angle: Max. ±2.5° at 3 m or more
• Synchronization: Optical or wire synchronization, set by wiring
• Interference prevention: Up to 2 GL-R systems (Channel A/B for optical, automatic for wire)

Electrical & Output Ratings

• Supply voltage: 24 VDC ±20%, ripple 10% or less, Class 2
• OSSD outputs: 2 transistor outputs (PNP or NPN by cable type), max. load 500 mA
• Residual voltage (ON): Max. 2.5 V with 5 m cable; OFF-state max. 2.0 V
• Leakage current: Max. 200 µA; capacitive load max. 2.2 µF; wiring resistance max. 2.5 Ω
• Supplemental output: AUX / error / muting-lamp transistor output, max. 50 mA
• Current consumption: Transmitter max. 54 mA; receiver max. 71 mA (excluding OSSD current)
• Protection circuit: Reverse-current, per-output short-circuit and surge protection
• 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

Environmental & Physical Data

• Operating temperature: -10 to +55 °C, no freezing
• Storage temperature: -25 to +60 °C, no freezing
• Relative humidity: 15 to 85 % RH operating; 15 to 95 % RH storage, no condensation
• Ambient light: Incandescent lamp 3,000 lux or less; sunlight 20,000 lux or less
• Protection rating: IP65 / IP67 per IEC60529; overvoltage category II
• Material: Aluminum main unit; nylon (GF 30%) upper and lower case; polycarbonate front cover with SUS304
• Weight: Transmitter 430 g; receiver 440 g
• Communication: No built-in ports, protocols or expansion

Installation Guide

• Mount the transmitter and receiver facing each other so all 31 beam axes align across the detection zone.
• Keep the effective aperture angle within ±2.5° when the operating distance reaches 3 m or more.
• Choose optical synchronization for simple layouts, or wire synchronization when the wiring plan requires it.
• Set the Channel A/B switch when two GL-R systems operate near each other in optical mode.
• Connect the 24 VDC Class 2 supply and confirm the OSSD outputs switch OFF when any beam interrupts.
• Verify the IP65/IP67 seal and cable routing before commissioning the machine guard.

Package Contents

• 1 × Keyence GL-R31F transmitter
• 1 × Keyence GL-R31F receiver
• Mounting brackets and fixing hardware
• Instruction sheet

FAQ

• Q: What is the detection capability of the GL-R31F?
  A: It detects a ø14 mm object, which suits finger protection applications. The 31 beams sit 10 mm apart across a 300 mm detection height.
• Q: What detecting distance does this model support?
  A: It works from 0.2 to 10 m. Keep the aperture angle within ±2.5° at 3 m or more.
• Q: Which temperature range does the GL-R31F tolerate?
  A: It operates from -10 to +55 °C without freezing and stores from -25 to +60 °C.
• Q: How fast does the OSSD respond?
  A: The response time is max. 7.8 ms for channel 0 on the ON→OFF transition.
• Q: Is the GL-R31F in stock and how do you ship it?
  A: We keep new original stock ready and ship within 5 days by DHL, UPS or FedEx.
• Q: What is your return policy?
  A: We support returns within 30 days. Contact our team for the return process.

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