Baumer FHDK 07P6901 微型Photoelectric Sensor参数 and Selection：窄空间背景抑制检测How to选
Published：2026-08-31 · Brand：堡盟 · Category：选型指南
Inside the equipment, in seams or small modules, the installation space is often only a few millimeters, and conventional photoelectric sensors cannot be installed. The FHDK 07P6901 belongs to the subminiature background suppression type diffuse reflection photoelectric sensor. The housing is only 8 × 16.2 × 10.8 mm, but it can be stably detected in the range of 10… 60 mm. It is often used for space-constrained close-in positioning, material shortage and limit detection.
When it is used, the installation margin is mostly only a few millimeters: the sensor is embedded in the inner wall of the equipment to confirm that the small workpiece has reached the station; the terminal position of the jaws, sliding table, and micro cylinder should be confirmed; the small packaging materials, labels, and material boxes on the packaging line are missing when they pass through. These position targets are small, the background is fixed, and the distance is close. Background suppression excludes the fixed background from the detection range, and there are naturally few false triggers.
In principle, it is a diffuse reflection type with background suppression. The transmitter and receiver are on the same side, and there is no need to shoot at the bracket or reflector. The red LED (660 nm) is easy to align, and the detection distance is 10... 60 mm. The fuselage is directly adjusted. Compared to the shooting type and the specular type, the most accessories are saved, and one fuselage is installed.
The housing is plastic, 8 × 16.2 × 10.8 mm, with 2 m cable at the bottom, light weight and no space, enough to deal with general dust and water vapor. If you want to flush frequently on site, you have to choose a more flush-resistant model, or add a protective cover to the sensor.
The output is PNP, the brightness and darkness can be switched, the maximum is 100 mA, the power supply is 10... 30 V DC, and the digital input of the European PLC is directly connected. Japanese and many domestic equipment are NPN inputs, either choose the same specification NPN model or add a conversion relay. Before placing the order, confirm the polarity of the PLC input. Do not wait for the wiring to find that it does not match.
The delivery time is not in line, or the on-site detection method is not the same, there are other ways inside the Bao Meng: to have higher accuracy of slot type shooting, look at the FGUM cross sensor; the probe should be extended into a small or high temperature area, using FZAM fiber amplifier; the target is metal, the environment is dusty and strong, and the IGYX inductive proximity switch is more stable. When changing the model, check the detection principle, distance, output and interface one by one, and finally the original factory data shall prevail.
Selection Comparison Table
| Parameter | FHDK 07P6901（订货号 10148792） |
|---|---|
| Product Category | Miniature background suppression diffuse reflection photoelectric sensor |
| TEST PRINCIPLE | Diffuse, with background suppression |
| 光源 | Pulsed red LED, 660 nm |
| Detection Distance | 10… 60 mm (adjustable) |
| 输出 | PNP, bright/dark switchable, ≤ 100 mA |
| voltage supply | 10… 30V DC |
| Enclosure material | Plastic, 8 x 16.2 x 10.8 mm |
| Operating Temperature | -20… +50°C |
| Connection | Bottom cable 2 m |
| Response time | < 0.5 ms |
Note: Specifications are based on manufacturer public data and may vary by batch. Please verify with current OEM documentation.
FAQ
Q：What is the detection distance of FHDK 07P6901?
A：10… 60 mm (adjustable), background suppression can exclude fixed background interference; the actual distance of dark targets will be shortened, and the key parameters shall be subject to the original factory data.
Q：Is FHDK 07P6901 PNP or NPN?
A：PNP output, bright/dark can be switched; on-site NPN input needs to select the same specification NPN model or plus conversion relay.
Q：How small is the installation space for the FHDK?
A：The case is only 8 × 16.2 × 10.8 mm, which is a miniature series, suitable for close detection of space constraints such as inside the equipment or seams.
Q：How to choose FHDK and other Baomeng optoelectronics?
A：The FHDK miniature is selected for the space; the FGUM fork is selected for the slot type detection with higher accuracy; the OADM laser ranging needs to be evaluated over a longer distance; the type is selected according to the station distance and installation conditions.
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