Product Overview
Keyence GL-VM191FP is a compact Type 4 safety light curtain. This unit belongs to the GL-V series. It uses 191 infrared beam axes. Therefore, it detects fingers with a 14 mm minimum object size. The metal housing suits harsh industrial cells. Moreover, optical synchronization removes extra wires. The system works as a transmitter and receiver pair. In addition, it provides PNP OSSD outputs for machine safety circuits.
This light curtain protects operators at press brakes, robots, and automated assembly lines. It meets Category 4, PL e, and SIL3 requirements. Because of this, it fits high-risk guarding tasks. The 1900 mm detection height covers large openings. Meanwhile, the 10 mm beam spacing gives dense coverage. Response time is fast at max. 11.9 ms. As a result, stopping distance stays short. The IP65 and IP67 ratings support dusty and washdown areas. It is an active Keyence product with confirmed production status.
Technical Specifications
| Brand | Keyence |
| Model | GL-VM191FP |
| Series | GL-V series |
| Module Type | Type 4 safety light curtain, transmitter + receiver set |
| Protection Type | Finger protection |
| Number of Beam Axes | 191 |
| Beam Axis Spacing | 10 mm |
| Minimum Detectable Object | ø14 mm |
| Detection Height | 1900 mm |
| Total Length | 1920 mm |
| Detecting Distance | 0.3 to 12 m |
| Light Source | Infrared LED, 850 nm, Exempt Group IEC62471 |
| Effective Angular Aperture | Up to ±2.5° at 3 m or above |
| Response Time | Max. 11.9 ms, OSSD channel 0, ON to OFF |
| Detection Mode | ON when all beam axes are received |
| Synchronization | Optical synchronization |
| Interference Prevention | Up to 2 units by series connection and switch setting |
Electrical and Output Data
- Supply Voltage: 24 VDC -20/+25%, ripple 10% or less, Class 2
- 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 OSSD
- Current Consumption: Transmitter max. 187 mA; receiver max. 213 mA, OSSD current excluded
- Protection Circuit: Supply reverse-connection, per-output short-circuit, surge protection
- Built-in Ports: None
- Protocols: None
- Communication Expansion: None
Environmental and Mechanical 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 and lower case PPS GF40%; front cover polycarbonate and SUS304 |
| Weight | Transmitter 1250 g; receiver 1260 g |
| Dimensions H×W×D | Not available |
Installation Guide
Mount the transmitter and receiver facing each other. Keep the optical axes aligned. Use the 10 mm beam spacing to set the protective field. The 0.3 to 12 m detecting distance gives layout freedom. However, do not exceed the ±2.5° angular aperture. Use optical synchronization to avoid extra sync wires. Next, connect the PNP OSSD outputs to a safety relay or safety PLC. Check the response time of 11.9 ms in the machine stop calculation. Use shielded cable for noisy cabinets. Also, keep the front cover clean for reliable beam reception.
Setup and Maintenance Convenience
- Optical synchronization reduces wiring work.
- Series connection supports up to 2 units.
- Switch setting prevents optical interference.
- Indicator LEDs speed up alignment and fault checks.
- IP65 and IP67 housing allows simple cleaning.
- Metal body resists vibration and shock.
- Front cover protects the optical window.
- No protocol setup is required.
Compatibility Notes
The GL-VM191FP works as a standalone Type 4 ESPE / AOPD pair. It has no built-in communication ports. Also, it does not support fieldbus protocols. It connects to safety relays, safety PLCs, and standard machine safety inputs. The PNP OSSD outputs suit positive logic safety circuits. The 24 VDC Class 2 supply matches common industrial power. In addition, the unit supports series connection with one other compatible light curtain. This helps build multi-side guarding. For obsolete control systems, verify the input type and response time before replacement. Oiltech Controls can check signal compatibility before shipment.
Certifications and Standards
| Safety Standards | 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 |
| Protection Rating | IP65 / IP67, IEC60529 |
| Light Source Safety | Exempt Group, IEC62471 |
| Overvoltage Category | II |
Typical Applications
- Press brake and bending machine guarding
- Robot cell entry protection
- Automated assembly line openings
- Packaging machine feed points
- Material handling and palletizing zones
- Textile and paper machine access doors
- Obsolete safety system replacement
- Multi-side guarding with series connection
Diagnostic Capabilities
The receiver checks all 191 beam axes. The detection mode turns ON only when all beams are received. A blocked beam turns the OSSD OFF. The response time stays within 11.9 ms. Indicator LEDs show power and output status. Also, the interference prevention function limits cross-talk between two units. The protection circuit handles reverse supply, short circuit, and surge events. These features help engineers find alignment faults and wiring errors fast. The IP67 housing also supports fault finding in wet or dusty areas.
Packaging List
- Keyence GL-VM191FP transmitter x1
- Keyence GL-VM191FP receiver x1
- Mounting hardware as supplied
- Instruction sheet as supplied
- Protective packaging for safe transport
Why Buy From Oiltech Controls?
- More than 15 years of industrial automation spare parts experience.
- Worldwide shipment support through FedEx, UPS, and DHL.
- Tested industrial surplus and refurbished options available.
- 12-month warranty on eligible products.
- Technical verification before shipment.
- Support for obsolete control systems and legacy safety devices.
Contact us for stock, lead time, and compatibility checks. Email: info@oiltechcontrols.com. WhatsApp: +86 158 8020 0923.
Shipping and Warranty
We ship by FedEx, UPS, and DHL. Tracking is provided after dispatch. Eligible products carry a 12-month warranty. The warranty covers defects under normal use. However, it does not cover physical damage or incorrect installation. Contact Oiltech Controls for warranty claims. Email: info@oiltechcontrols.com. WhatsApp: +86 158 8020 0923.
FAQ
Q: What is the minimum detectable object size?
A: The GL-VM191FP detects objects as small as ø14 mm.
Q: How many beam axes does it have?
A: It has 191 beam axes with 10 mm spacing.
Q: What is the detecting distance?
A: The range is 0.3 to 12 m.
Q: What output type does it use?
A: It uses PNP transistor OSSD outputs, x2.
Q: What is the response time?
A: The response time is max. 11.9 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: The housing is IP65 and IP67 rated.
Q: Does it need a communication module?
A: No. It has no built-in ports or protocols.
Q: Can I connect two units?
A: Yes. Series connection supports up to 2 units.
Q: What is the operating temperature?
A: The range is -30 to +55 °C, no freezing.
Q: Do you ship worldwide?
A: Yes. We use FedEx, UPS, and DHL.
Q: What warranty do you offer?
A: Eligible products carry a 12-month warranty.
Q: How do I check compatibility?
A: Contact Oiltech Controls with your machine model and input type. Email: info@oiltechcontrols.com. WhatsApp: +86 158 8020 0923.
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