GL-VM104HP Keyence 104-Beam Type 4 Safety Light Curtain

The Keyence GL-VM104HP is a Transmitter + Receiver set for industrial control and automation applications.

Keyence GL-VM104HP is a Type 4 safety light curtain transmitter and receiver set with 104 beam axes and a 2060 mm detection height. Its 24 VDC supply and PNP OSSD outputs integrate directly into machine safety circuits.

What specifications drive the GL-VM104HP cost of ownership?

Engineering-grade precision in beam spacing and response time directly reduces scrap and downtime costs. The 20 mm beam axis spacing and ø25 mm minimum detectable object size define a hand protection field that minimizes unnecessary machine stops. Furthermore, the max. 8.2 ms response time (OSSD, channel 0, ON→OFF) supports short safety distances, which can lower installation cost by reducing required floor space.

Electrical and mechanical parameters

• Supply voltage: 24 VDC -20/+25%, ripple (P-P) 10% or less, Class 2
• Maximum load current: 150 mA or less
• Control output (OSSD): Transistor output x2 (PNP)
• Current consumption (indicator ON): Transmitter max. 185 mA; Receiver max. 201 mA (OSSD output current not included)
• Number of beam axes: 104
• Detection height: 2060 mm
• Total length: 2080 mm
• Detecting distance: 0.3 to 15 m
• Response time (OSSD, channel 0, ON→OFF): max. 8.2 ms
• Protection rating: IP65/IP67 (IEC60529)

How does This unit reduce integration and maintenance costs?

Optical synchronization eliminates dedicated sync wiring between transmitter and receiver, cutting cable and labor costs. The aluminum alloy main unit and PPS (GF40%) upper/lower case resist vibration (5 to 150 Hz, 1G) and shock (15 G, 6 ms), which extends service life in demanding environments. Additionally, interference prevention for up to 2 units by series connection and switch setting avoids cross-talk without external filters, lowering component count and wiring expense.

The IP65/IP67 rating allows operation in washdown areas, reducing the need for secondary enclosures. With an operating temperature range of -30 to +55 °C, the set performs in cold storage and outdoor installations without additional heating or cooling hardware.

Where is this safety light curtain applied?

Hand protection applications on press brakes, packaging lines, and robotic cells benefit from the 2060 mm detection height and 0.3 to 15 m detecting distance. The Type 4 ESPE/AOPD classification per IEC61496-1/-2 and SIL3 per IEC61508 support safety functions requiring high integrity. Consequently, This unit suits both new machine builds and retrofits where floor space and wiring cost are critical.

Integration and support

The set provides no built-in communication ports or protocols; OSSD outputs connect directly to safety relays or controllers. For exact electrical specifications and engineering-grade precision in matching, contact AutoDCSTech with your requirements.