GL-VM12LN Keyence Safety Light Curtain GL-VM12LN NPN Body Guard

GL-VM12LN Keyence Safety Light Curtain

GL-VM12LN is a Keyence GL-V series Type 4 safety light curtain. It uses body protection logic with 12 beam axes. A transmitter and receiver pair build the detection field. Optical synchronization removes the sync cable. The metal case stays compact at 480 mm overall. This unit suits openings where full-body entry must be blocked.

Main Technical Data

• Model: GL-VM12LN
• Brand: Keyence
• Series: GL-V series
• Type: Type 4 ESPE / AOPD set
• Protection: Body protection
• Beam axes: 12
• Beam spacing: 40 mm
• Detectable object: ø45 mm
• Detection height: 440 mm
• Total length: 480 mm
• Range: 0.3 to 15 m
• Response time: max. 4.3 ms
• Output: NPN transistor x2

Optical Behavior

• Infrared LED at 850 nm
• Exempt Group per IEC62471
• Angular aperture up to ±2.5° at 3 m or above
• ON state when all 12 beams arrive
• Optical sync, no dedicated line
• Crosstalk control for up to 2 units

Electrical Specs

• 24 VDC, -20/+25%, ripple 10% or less, Class 2
• Load current max. 150 mA
• ON residual voltage up to 2.5 V at 5 m
• OFF voltage up to 2.0 V at 5 m
• Leakage current up to 0.8 mA
• Load capacity 0.8 µF
• Wiring resistance up to 2.5 Ω
• Input short-circuit current approx. 3 mA
• Transmitter draw max. 77 mA
• Receiver draw max. 90 mA
• Reverse-connection, short-circuit and surge protection

Environment and Build

• Operating range -30 to +55 °C, no freezing
• Storage range -30 to +70 °C, no freezing
• Humidity up to 95 % RH, no condensation
• Ambient light 3,000 lux lamp; 20,000 lux sun
• Rating IP65/IP67 per IEC60529
• Overvoltage category II
• Vibration 5 to 150 Hz, 1G, 10 cycles X/Y/Z
• Shock 15 G, 6 ms, 100 times X/Y/Z
• Body aluminum alloy
• Case PPS GF40%
• Cover polycarbonate and SUS304
• Weight 320 g each unit

Standards and Approvals

• 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

Where It Fits

• Small machine entry points
• Body access gates on conveyors
• Compact robot cells
• Pallet transfer openings
• Light-duty press guards
• Automated door and shutter zones
• Low-profile assembly stations

Mounting Guide

• Set transmitter and receiver face to face
• Hold angular tilt within ±2.5° at 3 m or above
• Work inside the 0.3 to 15 m range
• Use 40 mm spacing for body protection
• Feed 24 VDC Class 2 with correct polarity
• Set switches for two-unit series use

Commissioning and Care

• Check OSSD state before machine start
• Match 4.3 ms response to stop distance
• Wipe the cover with a soft cloth
• Skip abrasive cleaners and solvents
• Inspect cable, plug and gasket after service
• Run periodic guard function tests

Diagnostic Signals

• Indicator reports power and output state
• ON state confirms all beams received
• 4.3 ms response aids fast stop checks
• Short-circuit protection cuts downtime
• Surge and reverse-connection protection guard the wiring

Oiltech Controls Review

• Compact 480 mm body fits tight openings
• 12 beams give simple body-level blocking
• NPN output matches sinking PLC inputs
• Light weight eases single-person mounting
• Low current draw suits shared 24 V rails
• Solid pick for legacy GL-V retrofits

Oiltech Controls Insight

• Body protection models cut nuisance trips
• 40 mm spacing ignores small debris
• Optical sync saves wiring time
• Series link limits optical crosstalk
• Keep a spare transmitter and receiver on site

Why Buy From Oiltech Controls?

• 15+ years in industrial automation spare parts
• Global shipment support
• Tested surplus and refurbished options
• 12-month warranty
• Technical verification before dispatch
• Support for obsolete control systems
• Quick quotes for urgent line stops

Shipping and Warranty

• Dispatch in 24 to 28 hours
• FedEx, UPS and DHL service
• 12-month warranty terms
• Industrial-grade packing

Package List

• 1 x Keyence GL-VM12LN transmitter
• 1 x Keyence GL-VM12LN receiver
• Standard mounting parts as supplied
• Documentation as supplied

FAQ

Q: Is GL-VM12LN a good fit for finger protection?

A: No. It uses 40 mm beam spacing for body protection. The smallest object it sees is ø45 mm. Pick a 10 mm spacing model for finger-level guarding.

Q: My PLC card sinks current. Will GL-VM12LN work?

A: Yes. GL-VM12LN uses NPN output. That suits sinking inputs. If your card sources current, choose the PNP version instead.

Q: Can I mount two GL-VM12LN pairs close together?

A: Yes. Use the series connection and switch setting. This limits optical crosstalk. Keep both pairs aligned and spaced per the manual.

Q: What should I verify on a surplus GL-VM12LN?

A: Ask for a response time record and lens photos. Check the cable and plug state. Confirm the transmitter and receiver serial numbers match.

Q: How do I size the guard for a 500 mm opening?

A: The 480 mm total length covers 440 mm of detection height. Add brackets for the extra gap. Also confirm the stop distance against the 4.3 ms response.

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

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