Autonics PRDW12-8DP Proximity Switch Diffuse Reflection Photoelectric Sensor With Cylindrical Metal Housing

1. Overview of the Autonics PRDW12-8DP

The Autonics PRDW12-8DP is a diffuse reflective photoelectric sensor housed in a Ø12 mm cylindrical metal housing, designed for an ultra-short sensing distance of 8 mm. It incorporates a high-performance infrared LED and precision optical lens, enabling reliable detection of highly reflective, low-reflective, and transparent objects with a repeatability of 0.05 mm, ensuring zero missed detection for high-speed assembly lines and precision placement equipment.

The sensor features a one-touch teach function, enabling tool-free adjustment and automatic sensitivity setting within 2 seconds at the touch of a button. It also provides reverse polarity protection, surge suppression, and short-circuit protection, ensuring reliable operation even with wide voltage fluctuations of 10–30 VDC. A 360° red LED indicator provides real-time power and output status information, allowing maintenance personnel to confirm sensor operation without downtime. The PRDW12-8DP's IP67 protective housing and –25°C to +65°C operating temperature range ensure excellent performance in environments with humidity, dust, oil, and vibration. Its M12 connector outlet allows for quick replacement, minimizing downtime. Its compact 12 mm outer diameter allows for easy installation in confined spaces. It is widely applicable in industrial applications requiring short-range, high-speed, and high-precision inspection, such as semiconductor handling, pharmaceutical packaging, lithium battery winding, and robotic end-effectors.

2. Core Features:

1. Core Electrical Parameters
Sensor Type: Cylindrical Inductive Proximity Switch
Sensing Distance: 8 mm (Unshielded Mounting)
Power Supply: DC 12–24 V (Permitted Range: 10–30 V)
Output: PNP Normally Open (NO), 3-wire
Current Consumption: ≤ 10 mA
Maximum Output Current: 200 mA
Response Frequency: 400 Hz
Residual Voltage: ≤ 1.5 V
Protection Functions: Reverse Polarity Protection, Surge Protection, Short-Circuit Protection, Overload Protection

2. Mechanical and Environmental Specifications
Case Dimensions: Ø12 mm cylindrical, nickel-plated brass body
Standard Detection Object: 25 × 25 × 1 mm iron sheet
Repeatability: ≤ 0.05 mm
Hysteresis (Distance): ≤ 10% of sensing distance
Protection Rating: IP67 (Dustproof, Temporary Water Immersion)
Operating Temperature: –25°C to +70°C
Storage Temperature: –30°C to +80°C °C
Ambient Humidity: 35…95% RH (non-condensing)
Connection Method: 2 m oil-resistant PUR cable or M12 connector available
Weight: Approximately 42 g (including cable)

3. Main Functions and Applications
Extremely long sensing distance: 8 mm, considered the longest among similarly sized M12 proximity switches, it can replace traditional limit switches and reduce the risk of mechanical collisions.
One-touch teach-in function: Sensitivity can be reset via an external button or PLC pulse, reducing commissioning time by 70%.
360° visible LED: A red indicator light provides instant confirmation of switch actuation from any angle, facilitating on-site maintenance.
High interference immunity: A built-in dedicated sensor IC provides excellent immunity to variable frequency drives, servo motors, and welding environments.
Widely applicable: Industrial applications requiring non-contact detection of metal targets, such as robotic end-point sensors, machine tool magazines, automotive welding lines, food packaging, and warehouse conveyor systems.

3.Product details pictures

4. Related products

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