SICK 1059632 GL6G-P4211 PNP Transparent-object Sensor

USD 50.96

GL6G-P4211 provides polarized red-light sensing for transparent objects with >20% beam attenuation, 270° sensitivity adjustment, PNP output and M8 connection.

SKU SICK-1059632 Category
SICK G6

SICK GL6G-P4211 Transparent-object Retro-reflective Sensor

BrandSICK
Model IdentifierGL6G-P4211
Official Part Number1059632

Technical Overview

The SICK GL6G-P4211 is a polarized dual-lens retro-reflective sensor for transparent-object detection requiring more than 20% attenuation along the light beam. With PL80A, sensing spans 0.07–5 m and maximum range is 0.03–6 m. Its 650 nm red PinPoint LED produces an 8 mm spot at 350 mm. A 270° potentiometer adjusts sensitivity and a separate selector chooses light or dark switching for the PNP output. Response is below 625 µs with resistive load, with 1,000 Hz switching at a 1:1 light/dark ratio. The 10–30 V DC device has an M8 four-pin connector, ABS/PC housing, PMMA optics and IP67 protection.

Transparent-object retro-reflective sensor requiring >20% beam attenuation, with 0.07–5 m PL80A sensing, 270° adjustment, selectable PNP switching and M8 connection.

Key Features

  • Polarized dual-lens retro-reflective sensing for transparent objects
  • Required attenuation along the light beam: >20%
  • PL80A: 0.07–5 m sensing; 0.03–6 m maximum range
  • 650 nm red PinPoint LED; Ø8 mm spot at 350 mm
  • 270° sensitivity potentiometer; separate light/dark selector
  • Single PNP switching output; ≤100 mA, reduced to 50 mA above 24 V supply
  • <625 µs response with resistive load; 1,000 Hz at 1:1 light/dark ratio
  • 10–30 V DC; 30 mA without load; M8 four-pin male connector
  • ABS/PC housing; PMMA optics; IP67; M3 mounting holes
  • −25 to +55 °C operation; temperature stability after adjustment ±10 °C

Adjust polarized reflected-light detection for a transparent target that produces the required beam attenuation, then connect the selected PNP state to external control.

Technical Specification Matrix

ParameterValue
Functional principlePhotoelectric retro-reflective sensor for transparent objects
Optical designPolarized dual-lens system; minimum reflector distance required
Sensing range0.07–5 m with PL80A reflector
Maximum sensing range0.03–6 m with PL80A reflector
Reflector rangesSensing / maximum: PL80A 0.07–5 / 0.03–6 m; PL40A 0.07–3.8 / 0.03–4.3 m; P250 0.07–3.5 / 0.03–4 m; PL20A 0.07–2.2 / 0.03–2.5 m; REF-IRF-56 tape 0.25–1.6 / 0.2–1.8 m
Required beam attenuation>20%
Light sourceVisible red PinPoint LED
Wavelength650 nm
Light spot sizeØ8 mm at 350 mm
LED service lifeAverage 100,000 h at ambient +25 °C
AdjustmentSensitivity potentiometer, 270°
Switching outputPNP
Switching modeLight or dark switching, selectable via rotary switch
Signal voltage HIGH/LOWSupply voltage −(≤3 V) / approximately 0 V
Output current≤100 mA; maximum 50 mA at supply voltage >24 V
Response time<625 µs with resistive load
Switching frequency1,000 Hz at 1:1 light/dark ratio
Power supply10–30 V DC; limit values in a short-circuit-protected network, maximum 8 A
Ripple±10%; remain within supply tolerances
Current consumption30 mA without load
ConnectionM8 four-pin male connector
Pin assignmentCD-066: 1 BN=L+; 2 WH=not connected; 3 BU=M; 4 BK=Q
Circuit protectionA: supply reverse-polarity protection; B: inputs and output reverse-polarity protection; D: outputs overcurrent and short-circuit protection
Protection classIII
Housing materialABS/PC plastic
Optics materialPMMA plastic
IP ratingIP67
MountingM3 mounting holes
IndicatorsGreen: supply voltage active; yellow: received-light status
Operating temperature−25 to +55 °C; temperature stability following adjustment ±10 °C
Storage temperature−40 to +70 °C
UL filesNRKH.E348498 and NRKH7.E348498
MTTFD1,895 years
DCavg0%
Physical Weight (kg)0.02

Industrial Applications

1. Counting transparent bottles at a guide

A guide can present separated transparent bottles across the sensor-to-reflector path. The 270° potentiometer sets sensitivity using representative bottles that produce more than 20% beam attenuation. External counting logic reads the selected PNP switching state, with setup checking bottle shape, labels, orientation, reflector spacing and transit timing against the optical range, response and switching-frequency limits.

Problem Solved

A bottle-passage reference helps external counting logic register separated transparent containers after their attenuation and presentation have been qualified for this adjustable retro-reflective sensor.

Transparent bottles Beam attenuation Counting

2. Checking a transparent tray at a transfer stop

A transfer stop can present a transparent tray at a repeatable position across the reflected beam. Sensitivity is adjusted for the actual tray and the installed reflector distance, verifying more than 20% attenuation in the sensing path. External sequencing logic samples the PNP state after the tray settles, with commissioning checking seams, molded features and position tolerance.

Problem Solved

A qualified tray-present reference helps external sequencing logic coordinate a transfer step, using sensitivity adjustment and a repeatable optical presentation checked against the required attenuation.

Transparent tray Transfer occupancy Sensitivity adjustment

3. Monitoring transparent web presence at a feed point

A material feed can route a transparent web through a stable sensor-to-reflector path. Commissioning uses the actual web to verify attenuation above 20% and adjusts sensitivity while checking representative thickness, finish, wrinkles and angle. External process logic evaluates the selected PNP signal for material presence, with the reflector chosen and positioned within its documented sensing range.

Problem Solved

A qualified web-present signal helps external process logic recognize loss of transparent material at the checked feed point, using an attenuation level established with the actual web.

Transparent web Feed presence Reflector setup
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