Keyence GL-VM23FN Type 4 Safety Light Curtain 23 Beams

GL-VM23FN Keyence Type 4 Safety Light Curtain – Finger Protection with 23 Beam Axes

Technical Specifications

• Brand: Keyence
• Model: GL-VM23FN
• Series: GL-V series
• Category: Type 4 safety light curtain (ESPE / AOPD), transmitter and receiver set
• Detection capability: finger protection with ø14 mm minimum object size
• Optical resolution: 23 beam axes at 10 mm spacing, 220 mm detection height
• Measuring range: 0.3 to 12 m detecting distance
• Response time: 4.8 ms maximum (OSSD, channel 0, ON to OFF)
• Light source: infrared LED at 850 nm, Exempt Group per IEC62471
• Sensitivity and linearity: stable ON state only when all beam axes receive light
• Temperature range: -30 to +55 °C operating, -30 to +70 °C storage
• Environmental tolerance: 95 % RH, 3,000 lux incandescent, 20,000 lux sunlight
• Interference resistance: optical synchronization plus series connection of up to 2 units
• Ingress protection: IP65/IP67 per IEC60529
• Vibration and shock: 5 to 150 Hz at 1G, 15G pulses for 6 ms

Electrical and Output Details

• The curtain runs on 24 VDC with -20/+25% tolerance and draws 150 mA or less.
• Two NPN transistor OSSD outputs handle the safety signal with short-circuit protection.
• Residual ON voltage stays at 2.5 V or below with a 5 m cable.
• Leakage current reaches 0.8 mA maximum, and load capacity tops out at 0.8 µF.
• Current consumption is 66 mA for the transmitter and 76 mA for the receiver.
• The unit meets IEC61496-1/-2 Type 4, EN ISO13849-1 Category 4 PL e, and IEC61508 SIL3.
• EMC compliance covers EN55011 Class A, FCC Part15B Class A, and ICES-003 Class A.

Physical Build

• The main unit uses aluminum alloy, while the upper and lower cases use PPS with GF40%.
• The front cover combines polycarbonate with SUS304 for durability.
• Total length measures 240 mm, and each unit weighs 170 g.
• Optical synchronization removes the need for a separate sync line.
• The effective angular aperture reaches ±2.5° at 3 m or more.

Installation Guide

• Mount the transmitter and receiver face each other across the guarded opening.
• Keep the detecting distance between 0.3 m and 12 m for reliable operation.
• Align both units so every beam axis pairs correctly before you tighten the brackets.
• Wire the 24 VDC supply through a Class 2 source with 10% or less ripple.
• Connect the two NPN OSSD outputs to the safety relay or controller input.
• Use the series connection and switch setting to prevent interference between 2 units.
• Verify the ON state by checking that all 23 beam axes receive light.
• Keep ambient light below 3,000 lux from incandescent lamps and 20,000 lux from sunlight.

Package Contents

• 1 x GL-VM23FN transmitter
• 1 x GL-VM23FN receiver
• 1 x mounting bracket set
• 1 x instruction manual

Shipping and Support

• We keep this item in stock and ship within 5 days.
• We deliver through FedEx, UPS, and DHL.
• We accept returns within 30 days.
• Every unit arrives brand new and original.

FAQ

• Q: What object size does the GL-VM23FN detect?
  A: It detects objects as small as ø14 mm, which makes it a finger protection type.
• Q: How far can the transmitter and receiver sit apart?
  A: The detecting distance ranges from 0.3 m to 12 m.
• Q: How fast does the safety output react?
  A: The OSSD response time is 4.8 ms maximum from ON to OFF.
• Q: What output type does this model use?
  A: It provides two NPN transistor OSSD outputs.
• Q: Does it work in harsh environments?
  A: Yes, it carries IP65/IP67 rating and operates from -30 to +55 °C.
• Q: Can two units run side by side?
  A: Yes, series connection and switch settings prevent interference between 2 units.
• Q: What safety standards does it meet?
  A: It meets IEC61496-1/-2 Type 4, EN ISO13849-1 Category 4 PL e, and IEC61508 SIL3.
• Q: Is the item in stock and how fast do you ship?
  A: We have it in stock and ship within 5 days via DHL, FedEx, or UPS.