GL-R48H Keyence Safety Light Curtain | GL-R Series | Oiltech

GL-R48H Keyence Safety Light Curtain – GL-R Series Type 4 Hand Protection

Model: GL-R48H  |  Brand: Keyence  |  Series: GL-R

The GL-R48H is a robust Type 4 safety light curtain. It ships as a transmitter and receiver set. This hand protection model uses 48 beam axes with 20 mm spacing. Total length is 960 mm, detection height 940 mm. Detection capability is ø25 mm. It reaches 0.2 to 15 m with a 9.6 ms max response time. The GL-R48H carries SIL3, PLe Category 4, and IP65/IP67 ratings. Built for larger guard openings on heavy machinery.

Beam and Detection Profile

• Type: Type 4 ESPE / AOPD
• Protection Type: Hand protection
• Beam Axes: 48
• Beam Spacing: 20 mm
• Detection Capability: ø25 mm
• Detection Height: 940 mm
• Total Length: 960 mm
• Detecting Distance: 0.2 to 15 m
• Light Source: Infrared LED, 870 nm
• Aperture Angle: Max. ±2.5° at 3 m or more
• Response Time: Max. 9.6 ms (OSSD, ch0, ON→OFF)

Sync and Interference Control

• Optical sync or wire sync (set by wiring).
• Optical sync uses Channel A/B switch.
• Wire sync pairs systems automatically.
• Up to 2 GL-R systems run side by side.
• Detection zone turns ON when no beam is blocked.

Electrical and Output Data

• Supply: 24 VDC ±20%, Class 2, ripple 10% max.
• OSSD: 2 transistor outputs (PNP or NPN by cable), 500 mA max.
• Residual ON voltage: max. 2.5 V; OFF voltage: max. 2.0 V.
• Leakage current: max. 200 µA; capacitive load: 2.2 µF max.
• Load wiring resistance: max. 2.5 Ω.
• AUX / error / muting-lamp output: 50 mA max.
• Current draw: Transmitter max. 68 mA; Receiver max. 79 mA.

Safety and EMC Standards

• IEC61496-1/-2 (Type 4 ESPE/AOPD).
• 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.
• Protection: reverse-current, short-circuit, surge.

Environment and Construction

• Operating temp: -10 to +55 °C (no freezing).
• Storage temp: -25 to +60 °C.
• Humidity: 15 to 85 % RH (operating); 15 to 95 % RH (storage).
• Ambient light: 3,000 lux incandescent; 20,000 lux sunlight max.
• Protection: IP65/IP67 (IEC60529).
• Body: Aluminum main unit; Nylon GF30% cases; Polycarbonate and SUS304 front cover.
• Weight: Transmitter 1330 g; Receiver 1340 g.
• Overvoltage category: II.

Oiltech Controls Review

• 48 beams cover tall openings with fewer units.
• 15 m range suits large robot and press cells.
• Hand protection ø25 mm balances safety and cycle time.
• IP67 body handles dust and coolant spray.
• Aluminum housing resists impact damage.

Oiltech Controls’s Insight – Best Fit Equipment

• Large press and stamping lines.
• Robot cells with wide entry points.
• Palletizing and material handling gates.
• Automotive welding and assembly stations.
• Heavy packaging and pallet wrappers.

Why Buy From Oiltech Controls?

• 15+ years in industrial automation spare parts.
• Global shipment via FedEx, UPS, DHL.
• Tested surplus and refurbished options.
• 12-month warranty on every unit.
• Technical verification before shipment.
• Support for obsolete control systems.
• Fast dispatch in 24–28 hours.

Contact: info@oiltechcontrols.com or +86 158 8020 0923 (WhatsApp).

FAQ

Q: Is the GL-R48H a good fit for a 900 mm guard opening?

A: Yes. Its 940 mm detection height covers that opening with margin. Check stopping distance first.

Q: Can I mix GL-R47F and GL-R48H in one line?

A: Yes. Both belong to the GL-R series. Keep each system on its own sync channel.

Q: How do I pick between optical and wire sync?

A: Use wire sync in high-noise areas. Use optical sync to save wiring on long runs.

Q: Does the 15 m range need alignment tools?

A: At long range, use the beam alignment indicator. Keep aperture angle within ±2.5°.

Q: What should I check before buying a used GL-R48H?

A: Verify all 48 beams, test OSSD response time, and inspect the front cover for scratches.

Shipping and Warranty

• 12-month warranty from Oiltech Controls.
• Dispatch in 24–28 hours after order.
• Ship via FedEx, UPS, or DHL.
• Tracking number provided.

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