IFM O1D120 - User Manual

The O1D100 and O1D120 are optical distance sensors designed to measure distances between 0.2 and 10 meters. They feature background suppression at distances greater than 10 to 19 meters. The measured value is displayed on a 10-segment display. The sensors can generate two output signals based on configurable output functions.

The device offers several output functions:

Hysteresis Function (Hno/Hnc): This function maintains a stable switching state for the output even if the measured value fluctuates around the sensing range. Set and reset points are symmetrically arranged around a selected switch point [SPx]. The hysteresis is calculated based on repeatability with a safety factor of 1.5.
- [Hno] (normally open): The output switches when the object approaches and reaches the set point (A). It switches back when the object is removed and the reset point (B) is exceeded (B > A).
- [Hnc] (normally closed): Set and reset points are reversed. The output switches off when the object approaches and switches on when the object is removed.
Window Function (Fno/Fnc): This function allows monitoring a defined acceptable range.
- [Fno] (normally open): The output is closed when the measured value is between the "near" switch point [nSPx] and the "far" switch point [FSPx]. It is open otherwise.
- [Fnc] (normally closed): The output is open when the measured value is between the "near" switch point [nSPx] and the "far" switch point [FSPx]. It is closed otherwise.
Analogue Output Function (I/U): Output 2 (OUT2) can provide an analogue signal proportional to the distance. This can be configured as a current output (4-20 mA) or a voltage output (0-10 V). The analogue start point [ASP] defines the measured value for 4 mA / 0 V, and the analogue end point [AEP] defines the measured value for 20 mA / 10 V. A falling edge can be implemented by setting [AEP] before [ASP]. A minimum distance of 100 mm between [ASP] and [AEP] is required.

The sensor also includes an IO-Link communication interface, enabling direct access to sensor values and parameters, and allowing parameter setting during operation. Communication is also possible via a point-to-point connection with a USB adapter cable.

Important Technical Specifications

Measuring Range: 0.2 to 10 m
Background Suppression: > 10 to 19 m
Unambiguity Range: Fixed at 19.2 m (objects > 10 to 19.2 m are suppressed)
Laser Protection Class: Class 2 (Visible laser light)
Laser Wavelength: 650 nm
Laser Power: Max. ≤ 4.0 mW
Pulse/Impulsion: ≤ 1.3 ns
Certification: EN/IEC 60825-1:2007 and EN/IEC 60825-1:2014, complies with 21 CFR 1040 (except for deviations pursuant to Laser Notice No. 50, dated June 2007)
Power Supply: cULus, Supply Class 2
Outputs: 2 switching outputs (OUT1, OUT2), OUT2 can also be configured as an analogue output (4-20 mA or 0-10 V)
Input: Pin 5 for temporarily switching off the laser (High = Off, Low/not connected = On)
IO-Link Compatibility: IO-Link master port class A (type A). Can be used with master port class B with specific wiring configurations (deactivating pin 2 or not connecting pins 2 and 5).
Display: 4-digit alphanumeric display, 4 green LEDs (power, display unit), 4 yellow LEDs (switching status of outputs).
Sampling Rate: Configurable (e.g., 50 Hz, 1 Hz).
Repeatability and Accuracy: Varies based on sampling rate, distance, and object reflectivity (white 90% remission, grey 18% remission). For 50 Hz, max. 40 klx extraneous light, repeatability ranges from ±5.0 mm (200-1000 mm, white) to ±60.0 mm (6000-10000 mm, white). Accuracy ranges from ±15.0 mm (200-1000 mm, white) to ±70.0 mm (6000-10000 mm, white).
Time Delay for Switching Outputs: Configurable from 0 to 5 seconds in 0.1s steps.
Fault Suppression Time: Configurable from 0 to 5 seconds (0.1, 0.2, 0.5, 1, 2, 5s).
Laser Diode Lifetime: 50,000 hours

Usage Features

Operating Modes:
- Run Mode: Normal operating mode after power-on, performs monitoring and generates output signals. Displays current distance, yellow LEDs indicate switching status.
- Display Mode: Allows reading parameters and set parameter values. Accessed by briefly pressing [MODE/ENTER]. Parameters can be scrolled with [MODE/ENTER] and values displayed with [SET]. Returns to Run mode after 15s of inactivity.
- Object Reflectivity Display: Shows an orientation value for object reflectivity (e.g., +100 for white, +020 for grey). Accessed by pressing [SET] in Run mode.
- Programming Mode: For setting parameter values.
Parameter Setting:
- Parameters are set via the [MODE/ENTER] and [SET] buttons.
- [MODE/ENTER] selects parameters and confirms values.
- [SET] sets parameter values (scrolling by holding, incrementally by pressing once).
- The unit remains in operating mode during parameter setting, continuing its monitoring function with existing parameters until changes are confirmed.
- Display Unit Selection [Uni]: Allows selecting the unit of measurement for switch points and analogue points (mm, m, inch). It is recommended to set this before defining parameter values to avoid rounding errors.
- Display Setting [diS]: Configures the update rate and orientation of the measured value display (50 ms, 200 ms, 600 ms, or rotated 180°). The display can also be deactivated ([OFF]).
- Electronic Lock: The unit can be locked electronically to prevent unintentional settings. Keep [MODE/ENTER] + [SET] pressed until [Loc] is displayed to lock, or [uLoc] to unlock.
Extended Functions:
- Time Delay for Switching Outputs [dSx/drx]: Configures switch-on and switch-off delays for outputs.
- Fault Suppression Time [dFo]: Suppresses short-time saturation of the measuring element (e.g., from direct reflection or strong brightness fluctuations). During this delay, the last valid value is displayed, and output signals remain unchanged. This also suppresses "too much light" and "not enough light" error types.
- Reset to Factory Setting [rES]: Resets all parameters to their factory default values.
- Software Version Display [SW]: Shows the current software version number.
IO-Link Features:
- Provides access to sensor values, diagnostic information, and parameters.
- Includes extended functions like "Teach on background" and "Two-point teaching," detailed in the IODD (IO-Link Device Description).
- Object Reflectivity: Available via display and as a process data value (PDV), useful for detecting sensor soiling.

Maintenance Features

Repair: Faulty sensors must only be repaired by the manufacturer.
Cleaning: Keep the front lens of the sensor free from soiling.
Disposal: After use, dispose of the unit in an environmentally friendly way in accordance with applicable national regulations.
Fault Indication: The unit displays various error messages (e.g., [++] for too much light, [--] for too little light, [nEAr] for object too near, [FAr] for object too far, [Errp] for plausibility error, [LOFF] for laser switched off, [SC1/SC2/SC] for short circuits in switching outputs). These indications also affect the current/voltage output and IO-Link process values.