SICK 6028468 WF50-95B416 Teach-in Optical Fork Sensor

USD 317.98

WF50-95B416 has a 50 mm fork width, 95 mm depth, 0.2 mm minimum detectable object, two-point teach-in, PNP/NPN outputs, 10 kHz switching and M8 connection.

SKU SICK-6028468 Category
SICK WF

SICK WF50-95B416 Teach-in Optical Fork Sensor

BrandSICK
Model IdentifierWF50-95B416
Official Part Number6028468

Technical Overview

The SICK WF50-95B416 is an infrared LED optical fork sensor with a 50 mm opening and 95 mm fork depth. Its minimum detectable object is 0.2 mm. Two-point teach-in establishes the switching threshold using the clear path or substrate and the object or label while material is stationary. Plus/minus controls provide sensitivity adjustment, light/dark selection and a key lock. Separate PNP and NPN outputs connect through an M8 four-pin male connector. Switching frequency is 10 kHz, response is no more than 100 µs, response-time stability is ±20 µs and jitter is 40 µs. The 10–30 V DC device has an aluminum housing, IP65 protection and an operating range of −20 to +60 °C.

Infrared optical fork sensor with 50 mm opening, 95 mm depth, two-point teaching, separate PNP/NPN outputs, 10 kHz switching and M8 four-pin connection.

Key Features

  • Optical infrared LED fork sensing; 50 mm opening and 95 mm depth
  • 0.2 mm minimum detectable object
  • Two-point teach-in with material stationary
  • Plus/minus sensitivity adjustment after teaching
  • Button-selectable light/dark switching and key lock
  • Separate PNP and NPN outputs; 100 mA maximum output current
  • 10 kHz switching; response ≤100 µs; stability ±20 µs; jitter 40 µs
  • 10–30 V DC; protection class III, reference voltage 50 V DC
  • M8 four-pin male connector; Ø4.2 mm mounting holes
  • Aluminum housing, IP65 and −20 to +60 °C operation

Teach two optical conditions across a fixed fork opening and provide fast PNP/NPN events for material indexing and part passage.

Technical Specification Matrix

ParameterValue
Functional principleOptical fork detection
Fork width50 mm
Fork depth95 mm
Light sourceInfrared LED
Minimum detectable object0.2 mm
AdjustmentPlus/minus controls: teach-in, sensitivity, light/dark switching and key lock
Teach-in modeTwo-point teaching with material speed zero, machine stationary
Teach-in sequenceClear path or substrate: hold + and − together for 1 s; object or label: hold − for 1 s; red indicator shows teaching state
Fine sensitivity adjustmentPress + or − once for minor adjustment; hold a button for rapid setting
Key lockHold + and − together for 3 s to prevent unintentional actuation
Switching modeLight/dark switching; hold + and − together for 6 s to define switching function
Switching outputsSeparate PNP and NPN outputs
Output current100 mA maximum
NPN signal voltage HIGH/LOWApproximately supply voltage / ≤2 V
Switching frequency10 kHz
Response time≤100 µs
Response-time stability±20 µs
Jitter40 µs
Power supply10–30 V DC
Ripple<10%
Protection classIII; reference voltage 50 V DC
Circuit protectionSupply reverse-polarity protection; output Q short-circuit protection; interference pulse suppression
ConnectionM8 four-pin male connector
Pin assignmentCD-086: 1 BN=L+; 2 WH=Q NPN; 3 BU=M; 4 BK=Q PNP
Housing materialAluminum
MountingØ4.2 mm holes; WF50 drawing spacings C=51 mm, C1=16 mm
IndicatorsYellow: switching output; red: function indication
Operating temperature−20 to +60 °C
Storage temperature−30 to +80 °C
Ambient-light immunity≤10,000 lx
Shock loadEN 60068-2-27
IP ratingIP65
UL fileNRKH.E191603
MTTFD97 years
DCavg0%

Industrial Applications

1. Registering labels on a carrier strip

A label feeder can route the carrier through the fork opening and teach the substrate and label conditions while material is stationary. The automatic threshold and subsequent plus/minus adjustment establish the required optical distinction. External indexing logic then uses the selected light/dark event, with actual label contrast and feed timing assessed against the 10 kHz switching and documented response characteristics.

Problem Solved

A taught substrate-to-label transition gives external indexing logic a registration event, helping coordinate label advance with the application sequence using one fixed fork assembly.

Label registration Two-point teach-in 10 kHz

2. Counting separated small parts in a feed guide

A feed guide can move separated small parts through the infrared path inside the 50 mm fork opening. Each interruption produces a switching event for an external counter using either the PNP or NPN output. The 0.2 mm minimum detectable object, response no greater than 100 µs and 40 µs jitter inform target presentation, part spacing and controller input sampling.

Problem Solved

Optical interruption events give an external counter passage information for separated small parts, helping track feed output without aligning separate sender and receiver units.

Small-part count 0.2 mm MDO PNP/NPN

3. Identifying sustained occupancy at a transfer guide

A transfer guide can place the expected load path inside the fork so a retained opaque item continues to interrupt the beam. External sequencing measures the duration of the selected output condition and delays upstream release when the position remains occupied. The fixed fork geometry holds the opposed optics together, while the key lock protects the established local settings from unintentional actuation.

Problem Solved

A sustained interruption provides external sequencing with a transfer-occupancy interval, helping distinguish a passing item from one that remains at the guide.

Transfer occupancy Fixed fork Key lock
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