As automated production lines demand more reliable object-presence detection and faster response times, many applications continue to face practical sensing challenges. Transparent or semi-transparent packaging can be difficult for optical sensors to detect consistently; flexible materials may cause output fluctuations when they bend or rebound slightly; and dust, moisture, or strong ambient light can increase the risk of false triggering in optical sensing applications.
To address the engineering requirements of reliable detection and fast integration, ISSR introduces the ISUB100-12F32-E-L35-F7J400B,an economical F7J ultrasonic sensor designed for short-range object-presence detection. It provides switch output options that are straightforward to integrate into industrial control systems and includes SET teaching to simplify on-site switching-point adjustment. This helps PLC-based systems more reliably identify whether an object has arrived at or left a defined position.

Industry Challenge Analysis: Technical Difficulties in Object-Presence Detection
In industrial workstations, determining whether an object is present or correctly positioned is not simply a matter of obtaining a detection signal. The signal must also be stable, repeatable, and compatible with the control logic of the machine. Common challenges include:

1. Unstable Detection of Transparent and Semi-Transparent Materials
Optical and imaging-based sensing solutions can be sensitive to surface reflection, refraction, target angle, and environmental conditions. Transparent films, clear containers, and semi-transparent packaging may therefore be difficult to detect consistently in some applications.
2. Distance Variation Caused by Flexible Materials
Flexible packaging, thin films, soft components, and deformable materials may move, bend, or rebound slightly during handling. These small changes can make the detection boundary more difficult to maintain.
3. Interference from Dust, Moisture, and Strong Ambient Light
Dust, water vapor, splashing materials, and strong light sources can affect optical sensing systems. Depending on the installation, this may lead to false triggering, missed detection, or reduced detection reliability.
4. Need for Fast Switch Output Response
Industrial control systems often rely on discrete digital inputs (DI) for interlocks, cycle control, object-arrival confirmation, and downstream action triggering. A stable switch output is essential for dependable machine operation.
ISUB100 Solution: An Economical Ultrasonic Approach for Short-Range Object-Presence Detection
Il ISUB100-12F32-E-L35-F7J400B uses non-contact ultrasonic sensing technology. It transmits ultrasonic waves, receives the reflected echo from a target, evaluates the signal, and converts object presence into a discrete switching output that can be read directly by a PLC or relay module.

Key features for short-range workstation applications include:<br>
- Optimized for a typical target distance range of 10–100 mm
- Configurable output options: NPN/PNP + NO/NC, depending on the selected version
- SET teaching function to simplify adjustment of the on-site detection boundary
Key Technical Specifications
The following specifications summarize the primary operating parameters of the ISUB100-12F32-E-L35-F7J400B.
| Specifiche | Parametro |
|---|---|
| Campo di rilevamento | 10–100 mm |
| Operating Frequency | Circa 400 kHz |
| Tempo di risposta | 6 ms (min. 3 ms) |
| Tensione di esercizio | 9–24 VDC |
| Temperatura di esercizio | -10 to 55 °C |
| Output Configuration | NPN/PNP + NO/NC (depending on the version) |
Specification notice: Please refer to the official product datasheet and ordering information for the final confirmation of electrical connections, output logic, available versions, and installation requirements.

Installation and Setup Recommendations for Stable Detection
Correct installation is critical to achieving stable object-presence detection. ISSR recommends the following implementation practices:
1. Install the Sensor with Stable Alignment
Whenever possible, align the ultrasonic sensor so that its emission direction remains stable relative to the target surface. A consistent target orientation helps provide more reliable echo evaluation.
2. Keep the Detection Boundary Within the Effective Sensing Range
Set the critical “object present / object absent” position within the applicable 10–100 mm sensing range. Avoid placing the switching boundary at an unstable or marginal position where output chattering may occur.
3. Avoid Obstructions and Unwanted Reflections
Check the sensing path for nearby sidewalls, reflective structures, splashing materials, or temporary obstructions. If interference is present, adjust the mounting position or modify the installation to reduce unwanted echo paths.
4. Match Wiring and Output Logic to the Control System
Select the appropriate sensor output version based on the PLC digital input configuration:
- Confirm whether the PLC input requires an NPN or PNP output signal.
- Confirm whether the application requires normally open (NO) or normally closed (NC) logic.
- Ensure that the sensor output, PLC common terminal, and active signal level are compatible.
An incorrect output selection may result in symptoms such as an invalid signal when an object is present or logic that appears reversed.
5. Use SET Teaching to Store the Switching Boundary
For practical on-site commissioning:
- Move the target to the required presence or in-position boundary.
- Press SET to complete the teaching process.
- Repeat the movement several times to verify that the switching point is stable and suitable for the production cycle.

Broad Industrial Application Coverage
With the engineering-friendly advantages of non-contact ultrasonic detection, short-range evaluation, and switching output, the ISUB100 series is particularly suitable for the following object-presence detection stations:
- Position confirmation: Outputs a valid signal after a workpiece enters the designated area, enabling interlocking or triggering the next action.
- Packaging/label-related detection: Suitable for presence-detection requirements involving transparent appearances or flexible packaging.
- Handling and gripping cycle interlocking: Provides a rapid output after a robot completes its gripping position, helping reduce the risk of unintended actions.
- Rail or conveyor line in-position detection: Triggers control logic when an object enters or leaves the workstation boundary.
For further information about the complete terminal description, version-selection guidance (NPN/PNP, NO/NC), and SET teaching operating details for the INSAR Intelligent Research (ISSR) ISUB100-12F32-E-L35-F7J400B, please refer directly to the product detail page and datasheet. If you provide the workstation distance, target material, and PLC input type, we can also offer selection and integration recommendations better suited to your on-site application.
Per i parametri dettagliati del prodotto, fare clic qui per scaricare la versione completa: [ISUB100-12F32-E-L35-F7J400B_Economy Series Ultrasonic SensorOfficial Product Manual.pdf]
