Keyence GL-R20H Safety Light Curtain 20 Optical Axes In Stock
Hand protection type, 20 beam axes, 20 mm beam pitch, 380 mm detection height, 425 mm protection height, 0.2 to 15 m operating distance, IP65/IP67 enclosure, PNP/NPN output selectable, GL-R series robust housing.
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Key Features and Technical Specifications
This device uses 20 optical axes to watch your machine. It creates a wall of light. If a hand breaks the light, the machine stops. It stops fast. This prevents crushed fingers. It prevents bad cuts. The GL-R20H fits in tight spots. It has a tough metal case. Water and oil do not hurt it. It works when things get dirty.
| Specification | Details |
|---|---|
| Model | GL-R20H |
| Detection Capability | Ø 25 mm (Hand Protection) |
| Number of Beam Axes | 20 |
| Beam Axis Pitch | 20 mm |
| Detection Height | 380 mm |
| Protection Height | 425 mm |
| Operating Distance | 0.2 to 15 m |
| Response Time | 6.6 to 18.1 ms (varies by sync mode) |
| Enclosure Rating | IP65 / IP67 (IEC60529) |
| Ambient Temperature | -10 to +55°C (No freezing) |
| Component Models | Transmitter: GL-R20H-T, Receiver: GL-R20H-R |
| Output Type | 2 Transistor Outputs (PNP/NPN selectable) |
| Housing Material | Aluminum |
Robust Build Quality by Keyence
They made the GL-R series with a thick aluminum case. It is not weak plastic. It protects the glass lens. It protects the electronics inside.
The GL-R20H is rated IP65 and IP67. This means dust cannot get in. Water jets cannot hurt it. You can wash your machine down. The light curtain keeps working. It resists shock. It resists vibration. It stays aligned even when the machine shakes.
Precise 20 Optical Axes Detection
A big gap in the light beam is bad. A hand could slip through. The GL-R20H uses 20 optical axes. The beams are close together. The pitch is just 20 mm. This detects a hand instantly.
The 20 beams cover a height of 380 mm. This is the detection height. The total protection height is 425 mm. It leaves no dead zones. The response time is very fast. It creates a safe zone. If the optical path breaks, the output turns off. The hazard stops.
Easy Setup with GL-R20H-T and GL-R20H-R
The system has two parts. You have the transmitter, GL-R20H-T. You have the receiver, GL-R20H-R. They work together perfectly.
They have built-in lights. These lights show you the beam status. Red means stop. Green means go. They also help you align the units. You do not need special tools. You just twist them until the lights turn green. The GL-R20H-R connects easily. It gets you up and running fast.
Advanced Control and Safety Functions
It also has a blanking function. You can block specific beams. This is good for fixed parts of the machine. It supports External Device Monitoring (EDM). This checks if your relays are working. It also has an interlock function. This prevents the machine from starting by itself. The GL-R series adapts to your needs.
Frequently Asked Questions
The response time is between 6.6 ms and 18.1 ms. It depends on your wiring setup. It is very fast.
Yes. It has an IP67 rating. It can handle water and dust. Do not submerge it under water.
Usually, cables are sold separately. You need to pick the right length. We have cables in stock too.
The “T” is the transmitter. It sends the light. The “R” is the receiver. It catches the light. You need both to work.
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B557,South Pearl Building,Sanlian Road,Longhua,Shenzhen,China
- +86 755 81481609
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- www.kwoco-plc.com
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