SICK SLG10S-020FER21D20 Slim Light Grid Sensor (1116856)

The SICK SLG10S-020FER21D20 is a compact, IO-Link-enabled slim light grid sensor designed for reliable object detection across a 200 mm field height. It features 20 infrared LED beams with selectable cross-beam or parallel-beam modes for flexible detection of objects as small as 7.5 mm. With an aluminum/plastic hybrid housing and advanced beam diagnostics via IO-Link, this sensor is ideal for conveyor control, part presence detection, and counting applications in tight industrial spaces.

Technical Specifications

Model: SLG10S-020FER21D20 SICK
SICK Part Number: 1116856
Product Type: Slim light grid sensor (Sender/Receiver pair)
Sensing Range:

• Limit: 70 mm to 2,150 mm
• Parallel beam recommended: 70 mm to 1,500 mm
• 5× cross beam recommended: 130 mm to 1,500 mm
  Detection Height: 200 mm
  Beam Separation: 10 mm
  Number of Beams: 20
  Minimum Detectable Object (MDO):
• Parallel beam: 15 mm
• Cross beam: ≥ 7.5 mm
  Light Type: Infrared LED
  Wavelength: 850 nm
  LED Risk Group: Free group (EN 62471 compliant)
  Optical Exit: Flat
  Synchronization: Optical (2 beams)
  Scan Time:
• Parallel beam: 1.6 ms
• Cross beam: 3.1 ms
  Max. Response Time:
• Parallel beam: 4.8 ms
• Cross beam: 9.4 ms
  Teach-In Mode: Auto (default), configurable via IO-Link
  Factory Setting: 5× cross beam, pin 4 = object detection output (HIGH), pin 2 = teach-in input

Electrical Interface

Supply Voltage: 18 V DC to 30 V DC
Ripple: ≤ 1.3 Vpp
Power Consumption:

• Sender: ≤ 36.5 mA
• Receiver: ≤ 51 mA
  Digital Outputs:
• Type: 2× Push-pull (PNP/NPN)
• Max. Current: 100 mA
• Signal Levels: HIGH = UB–3 V, LOW < 3 V
• Short-circuit, overcurrent protected
  Digital Input:
• Quantity: 1
• Logic Levels: HIGH > 15 V, LOW < 5 V
  Output Load:
• Inductive: 1 H
• Capacitive: 100 nF
  Protection Class: III
  UL File No.: NRKH.E181493 & NRKH7.E181493
  Circuit Protection: Reverse polarity, overcurrent, and short-circuit protection

Mechanical Data

Housing Dimensions (W × H × D): 11.8 mm × 199.2 mm × 24.1 mm
Mounting Style: Slim rectangular (with integrated cable)
Housing Material: Aluminum and plastic
Front Screen Material: PMMA
Connection Type: Cable with M12 male connector, 4-pin
Cable Length: 150 mm
Cable Diameter: 3.4 mm
Cable Material: PVC
Conductor Cross Section: 0.14 mm²
Weight: 760 g
Overvoltage Protection Requirement: Yes

Smart Features via IO-Link

• Real-time beam diagnostics
• Adjustable beam function and switching logic
• Auto teach-in
• Access to beam status, object presence (QL/Qint), and system health

Safety and Standards

• CE-marked
• cULUS listed
• RCM compliant
• Complies with IEC/EN 62471:2008 (LED safety)
• IP rating not explicitly listed, assumed IP54/IP65 based on SLG series

Applications

Ideal For:

• Part detection on conveyor belts
• Transparent or small object detection
• Item counting in packaging lines
• Process control in automated assembly
• Integration into slim machine frames

Key Features & Benefits

✅ Ultra-Slim Design: Only 11.8 mm wide for tight space applications.

✅ High Precision: Detects objects as small as 7.5 mm with cross-beam setup.

✅ Plug & Play: Auto-teach with simple pin-based or IO-Link control.

✅ Robust Housing: Aluminum & PMMA design for industrial durability.

✅ Smart Diagnostics: IO-Link allows remote monitoring and configuration.

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