IFM O1D155 Distance Sensor – O1DLF3KG/IO-LINK

The IFM O1D155 is a high-performance time-of-flight distance sensor designed for precise, non-contact detection of objects up to 6 metres, even on dark or irregular surfaces. Equipped with red laser Class 1 technology, the O1D155 delivers fast sampling rates (up to 33 Hz), selectable PNP digital outputs, and dual analogue outputs (0–10 V / 4–20 mA). With IO-Link communication, repeatable accuracy, and a rugged zinc housing, it’s ideal for positioning tasks, packaging lines, and material handling systems.

Technical Specifications

Model: O1D155
Manufacturer: IFM
Sensor Type: Laser distance sensor (Time-of-Flight)
Light Source: Red light, 650 nm
Laser Protection Class: 1 (IEC 60825-1 compliant)
Typical Lifetime: 50,000 h
Measuring Range: 0.3…6 m (white 90% remission, 200×200 mm)
Background Suppression: 6…100 m
Spot Size at Max Range: 8×8 mm at 6 m
Sampling Rate: 1…33 Hz

Electrical Characteristics

• Operating Voltage: 18–30 V DC (SELV)
• Current Consumption: < 150 mA
• Protection Class: III
• Reverse Polarity Protection: Yes
• Electrical Connection: 1 × M12 A-coded connector

Output Configuration

• Digital Outputs: 2 × PNP (NO/NC programmable)
• Analogue Outputs: 1 × 4–20 mA (IEC 61131-2), 1 × 0–10 V (IEC 61131-2)
• Max Current Load: 200 mA per output
• Short-Circuit / Overload Protection: Yes (pulsed)
• Factory Output Settings:
  • DO1: Hno
  • DO2: Hno / I / U (configurable)

Accuracy & Performance

• White Surface (90% Remission):
  • 300–1000 mm: ±11 mm (repeatability), ±31 mm (accuracy)
  • 5000–6000 mm: ±145 mm (repeatability), ±165 mm (accuracy)
• Grey Surface (18% Remission):
  • 300–1000 mm: ±13 mm (repeatability), ±33 mm (accuracy)
• Mean Time To Failure (MTTF): 186 years

Software & Interfaces

• Interface Type: IO-Link
• Version: 1.1
• Transmission Rate: COM2 (38.4 kBaud)
• Profiles Supported:
  • Smart Sensor Profile
  • Device ID & Diagnosis
  • Process Data Variable
  • Teach Channel
• SIO Mode: Supported

Display & Indicators

• Display Type: 4-digit Alphanumeric (Distance / Programming)
• Status LEDs:
  • 2 × Yellow (Switching)
  • 1 × Green (Operation)

Mechanical Design

• Housing Type: Rectangular
• Housing Materials:
  • Diecast Zinc (Body)
  • Glass (Front Pane)
  • PC (LED Window)
• Dimensions: 59 × 42 × 52 mm
• Weight: 243 g

Environmental Conditions

• Ambient Temperature: –10 to +60 °C
• Protection Rating: IP67
• Extraneous Light Immunity: < 100 klx
• Power-On Delay Time: 10 minutes
• Calibration Conditions: 23 °C / 960 hPa

Compliance & Approvals

• EMC Standards: EN 60947-5-2
• Laser Safety: IEC 60825-1 (Class 1)
  • Meets 21 CFR 1040.10
  • Caution: Laser light – avoid direct eye exposure

Key Features & Benefits

✅ 6 m Sensing Range for long-distance applications with excellent accuracy.

✅ Dual Analogue + 2 Digital Outputs allow for flexible control system integration.

✅ IO-Link Connectivity enables diagnostics, parameterisation, and smart data transmission.

✅ IP67 Zinc Housing ensures long-term durability in industrial environments.

✅ Class 1 Laser Technology offers safe, visible detection with high repeatability.

✅ 4-Digit Display & LED Indicators provide real-time distance readouts and sensor status.

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