GL-VM24LP Keyence Safety Light Curtain 24 Beam Type 4 PNP

GL-VM24LP Keyence Safety Light Curtain – 24 Beam Type 4 Body Protection

GL-VM24LP is a compact metal Type 4 safety light curtain from the Keyence GL-V series. It is a body protection type. The set includes a transmitter and a receiver. Optical synchronization eliminates the sync wire. The infrared LED runs at 850 nm and meets Exempt Group (IEC62471). The detection mode is ON when all beam axes are received. You can connect up to 2 units for interference prevention. The minimum detectable object is ø45 mm. Beam spacing is 40 mm. Detection height is 920 mm. Total length is 960 mm. The detecting distance is 0.3 to 15 m. Response time is max. 4.8 ms. This model is active and in production.

Technical Data

• Brand: Keyence
• Model: GL-VM24LP
• Series: GL-V series
• Module Type: Type 4 ESPE / AOPD safety light curtain
• Protection Type: Body protection
• Beam Axes: 24
• Beam Spacing: 40 mm
• Detection Height: 920 mm
• Total Length: 960 mm
• Min. Object Size: ø45 mm
• Detecting Distance: 0.3 to 15 m
• Response Time: max. 4.8 ms (OSSD, channel 0, ON→OFF)
• Light Source: Infrared LED 850 nm, Exempt Group (IEC62471)
• Angular Aperture: up to ±2.5° (at 3 m or above)
• Synchronization: Optical
• Interference Prevention: up to 2 units by series connection and switch setting

Electrical Data

• Supply Voltage: 24 VDC -20/+25%, ripple (P-P) 10% or less, Class 2
• Max. Load Current: 150 mA or less
• Residual Voltage: ON up to 2.5 V; OFF up to 2.0 V (5 m cable)
• Leakage Current: up to 0.8 mA
• Max. Load Capacity: 0.8 µF
• Load Wiring Resistance: up to 2.5 Ω
• Inputs: short-circuit current approx. 3 mA
• Current Consumption: Transmitter max. 111 mA; Receiver max. 125 mA (OSSD output current not included)
• Control Output (OSSD): Transistor output x2 (PNP)
• Protection Circuit: Supply reverse-connection, per-output short-circuit and surge protection

Environmental and Physical Data

• Operating Temperature: -30 to +55 °C (No freezing)
• Storage Temperature: -30 to +70 °C (No freezing)
• Relative Humidity: up to 95 % RH (no condensation)
• Ambient Light: Incandescent lamp 3,000 lux or less; Sunlight 20,000 lux or less
• Protection Rating: IP65/IP67 (IEC60529)
• Overvoltage Category: II
• Vibration Resistance: 5 to 150 Hz, 1G, 10 cycles each in X/Y/Z
• Shock Resistance: 15 G, 6 ms pulses, 100 times each in X/Y/Z
• Material: Main unit Aluminum alloy; upper/lower case PPS (GF40%); front cover Polycarbonate, SUS304
• Weight: Transmitter 630 g; Receiver 640 g
• Dimensions (H×W×D): Not available

Certifications

• IEC61496-1/-2 (Type 4 ESPE/AOPD)
• EN ISO13849-1 (Category 4, PL e)
• IEC61508 (SIL3)
• UL60947-1 / CSA C22.2 No.60947-1
• UL1998
• EMC: IEC/EN61496-1, EN55011 Class A, FCC Part15B Class A, ICES-003 Class A

Oiltech Controls Review

• The GL-VM24LP suits body access guarding, not finger or hand detection.
• 24 beams at 40 mm spacing balance coverage and cost.
• 960 mm total length fits medium machine openings.
• PNP OSSD works with most European safety relays.
• Response time 4.8 ms is fast for body protection class.
• Metal housing and IP67 rating survive washdown and dust.
• We test each unit before shipment. Surplus options cut cost.

Oiltech Controls’s Insight

• Use this model where whole-body access is the risk, not fingers.
• Pair with a safety relay rated PL e / SIL3.
• Apply the 4.8 ms response time in your safety distance formula.
• Keep sunlight below 20,000 lux to avoid nuisance trips.
• Align transmitter and receiver within ±2.5° for stable beams.
• Stock a spare set for lines that run around the clock.

Best Suited Equipment

• Palletizers and depalletizers
• Large conveyor transfer points
• Robotic cell perimeter guarding
• Automated storage and retrieval systems
• Material feed openings on packaging lines
• Body access gates on assembly machines

Installation Guide

• Mount transmitter and receiver facing each other.
• Keep distance between 0.3 m and 15 m.
• Align within ±2.5° angular aperture.
• Use optical synchronization. No sync wire needed.
• Link up to 2 units for interference prevention.
• Wire PNP OSSD to your safety circuit.
• Use 24 VDC Class 2 supply with ripple 10% or less.
• Apply 4.8 ms response time to safety distance.

Debugging and Maintenance

• Check LEDs for power and output status.
• Verify residual voltage: ON up to 2.5 V; OFF up to 2.0 V.
• Keep load wiring resistance under 2.5 Ω.
• Keep load capacity under 0.8 µF.
• Clean front cover with a soft cloth. Avoid abrasives.
• Unit has reverse-connection, short-circuit, and surge protection.
• Vibration and shock ratings: 1G, 15 G.

Compatibility Notes

• Works with 24 VDC Class 2 power.
• No built-in communication ports. No protocols.
• No communication expansion available.
• OSSD outputs are PNP.
• Optical synchronization needs no extra wire.
• Fits GL-V series mounting accessories.

Packing List

• Transmitter unit x1
• Receiver unit x1
• Quick installation guide x1
• Mounting brackets and screws x1 set

Warranty and Shipping

• Warranty: 12 months from shipment. Covers manufacturing defects. Excludes misuse and unauthorized repair.
• Dispatch: Ships in 24 to 28 hours after order confirmation.
• Carriers: FedEx, UPS, DHL. Tracking number provided.

Why Buy From Oiltech Controls?

• Over 15 years sourcing industrial automation spare parts.
• Worldwide shipping with hands-on support.
• Tested surplus and refurbished units available.
• 12-month warranty on every eligible product.
• Technical check before each shipment.
• We help keep obsolete control systems running.

FAQ

Q: Is GL-VM24LP suitable for finger detection?

A: No. This is a body protection model with ø45 mm minimum object size. For finger or hand detection, choose a smaller spacing model such as GL-VM28HP with ø25 mm.

Q: How do I set the safety distance?

A: Use the 4.8 ms response time in your formula. Add machine stopping time and approach speed. Confirm the result with your risk assessment. Keep distance between 0.3 m and 15 m.

Q: Can I mix PNP and NPN models in one machine?

A: Not on the same safety input. This model uses PNP OSSD. If your relay needs NPN, pick an NPN model like GL-VM96HN. Keep output logic consistent.

Q: What causes intermittent beam faults?

A: Common causes are misalignment beyond ±2.5°, strong sunlight over 20,000 lux, dirty front covers, or loose brackets. Clean, realign, and retest all 24 beams.

Q: Do you offer this model as refurbished?

A: Yes. We carry tested surplus and refurbished options. Each unit is verified before shipment. Contact us at info@oiltechcontrols.com for current stock.

Contact Information

• Inquiries: info@oiltechcontrols.com
• Phone / WhatsApp: +86 158 8020 0923

Copyright © 2026 Oiltech Controls Limited. https://www.oiltechcontrols.com/ All rights reserved.