GL-VM20HP Keyence 20-Beam Hand Protection Light Curtain

GL-VM20HP Keyence GL-V Series Safety Light Curtain

GL-VM20HP is a compact Type 4 safety light curtain from the Keyence GL-V series. It uses 20 beam axes for hand protection. The metal housing suits harsh industrial cells. The set includes a transmitter and receiver. Optical synchronization keeps wiring simple. The OSSD PNP output connects to safety relays and controllers. Response time is max. 4.6 ms. Detection height is 380 mm. Total length is 400 mm.

This model fits guarding, access control, and press protection. It detects a ø25 mm object. It works from 0.3 to 15 m. The IP65/IP67 rating supports dusty and wet areas. It meets Type 4, Category 4, PL e, and SIL3 standards. The GL-VM20HP is a direct replacement for many obsolete safety curtains.

Technical Specifications

• Brand: Keyence
• Model: GL-VM20HP
• Series: GL-V series
• Module Type: Type 4 safety light curtain, hand protection
• Detection Range: 0.3 to 15 m
• Response Time: Max. 4.6 ms (OSSD, channel 0, ON to OFF)
• Resolution: ø25 mm minimum detectable object
• Number of Beam Axes: 20
• Beam Axis Spacing: 20 mm
• Detection Height: 380 mm
• Total Length: 400 mm
• Light Source: Infrared LED, 850 nm, Exempt Group (IEC62471)
• Synchronization: Optical synchronization
• Effective Angular Aperture: Up to ±2.5° at 3 m or above
• Detection Mode: ON when all beam axes are received
• Interference Prevention: Up to 2 units by series connection and switch setting
• Supply Voltage: 24 VDC -20/+25%, ripple 10% or less, Class 2
• Current Consumption: Transmitter max. 75 mA; receiver max. 86 mA
• Maximum Load Current: 150 mA or less
• Residual Voltage (ON): Up to 2.5 V at 5 m cable
• OFF Voltage: Up to 2.0 V at 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
• Control Output: Transistor output x2, PNP
• Built-in Ports: None
• Protocols: None
• Communication Expansion: None
• 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 270 g; receiver 270 g
• Dimensions (H×W×D): Not available

Installation Guide

• Mount the transmitter and receiver facing each other.
• Keep the beam path free of obstructions.
• Use the metal housing for stable alignment.
• Connect 24 VDC Class 2 power.
• Wire the PNP OSSD outputs to the safety circuit.
• Check optical synchronization after power-up.
• Confirm the detection mode shows ON for all beams.
• Set interference prevention if two units are used.

Setup and Maintenance

• Clean the front cover with a soft, damp cloth.
• Do not use abrasive cleaners on the polycarbonate window.
• Check alignment after shock or vibration events.
• Verify response time after any wiring change.
• Inspect cables for cuts, stress, or loose connectors.
• Replace the unit if the OSSD output fails.

Compatibility Notes

• Works with safety relays and safety controllers.
• PNP output matches common industrial logic inputs.
• Optical synchronization reduces cable runs.
• No built-in communication port or protocol.
• Series connection supports up to 2 units.
• Suitable for retrofits and obsolete safety systems.

Certifications

• Safety: IEC61496-1/-2 Type 4 ESPE/AOPD
• Functional Safety: EN ISO13849-1 Category 4, PL e; IEC61508 SIL3
• North America: UL60947-1 / CSA C22.2 No.60947-1; UL1998
• EMC: IEC/EN61496-1, EN55011 Class A, FCC Part15B Class A, ICES-003 Class A
• Protection Circuit: Supply reverse-connection, per-output short-circuit and surge protection
• Lifecycle: Active; official Keyence production status confirmed. Last verified: 2026-09

Packing List and Warranty

• 1 x Keyence GL-VM20HP transmitter
• 1 x Keyence GL-VM20HP receiver
• 1 x Installation guide
• Warranty: 12 months
• Shipping: FedEx, UPS, DHL

Typical Applications

• Hand protection on presses and forming machines
• Access guarding on robotic cells
• Packaging and palletizing lines
• Automated assembly stations
• Material handling and conveyor zones
• Obsolete safety system replacement

Diagnostic Capability

• ON state confirms all beam axes are received.
• OFF state shows beam interruption or fault.
• Indicator ON helps verify power and operation.
• Response time supports fast machine stop.
• Short-circuit and surge protection reduce downtime.
• Optical synchronization simplifies fault tracing.

Why Buy From Oiltech Controls?

• 15+ years in industrial automation spare parts
• Global shipment support for urgent needs
• Tested industrial surplus and refurbished options
• 12-month warranty on eligible products
• Technical verification before shipment
• Support for obsolete control systems

Contact us for inquiries: info@oiltechcontrols.com or +86 158 8020 0923.

FAQ

Q: What is the detection range of the GL-VM20HP?
A: The range is 0.3 to 15 m.

Q: What object size can it detect?
A: It detects a ø25 mm minimum object.

Q: How many beam axes does it have?
A: It has 20 beam axes with 20 mm spacing.

Q: What output type does it use?
A: It uses PNP transistor output x2.

Q: What is the response time?
A: The response time is max. 4.6 ms.

Q: What safety rating does it meet?
A: It meets Type 4, Category 4, PL e, and SIL3.

Q: What is the protection rating?
A: It is rated IP65/IP67.

Q: What is the operating temperature?
A: It operates from -30 to +55 °C.

Q: Does it have built-in communication?
A: No. It has no built-in ports or protocols.

Q: What is the warranty?
A: It comes with a 12-month warranty.

Q: How is it shipped?
A: We ship by FedEx, UPS, and DHL.

Q: Can it replace obsolete safety curtains?
A: Yes. It supports many retrofit and obsolete control systems.

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