Pepperl+Fuchs RLK28-5531116 | 17m Retroreflective Sensor 12-240V AC/DC Relay
Pepperl+Fuchs RLK28-5531116 retroreflective photoelectric sensor. 17m range, polarized red light, 12-240V AC/DC supply, relay output, IP67, -40 to 60°C.
Product Overview
The Pepperl+Fuchs RLK28-5531116 (also listed as RLK28-55/31/116) is a long-range retroreflective photoelectric sensor from the RLK28 universal series. It features a built-in relay output and operates on a wide 12 to 240V AC/DC supply. Key attributes include a 17 m detection range, polarized red light for reliable object detection (including shiny surfaces), and an IP67-rated housing for harsh industrial environments. It is commonly used in material handling, packaging, and outdoor applications.
Technical Specifications (Optical & Electrical)
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Parameter
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Specification
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Model / Order Code
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RLK28-5531116 (RLK28-55/31/116)
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Sensor Type
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Retroreflective (with Polarization Filter)
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Light Source
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Modulated Visible Red LED
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Detection Range
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0.05 ... 17 m (Effective: 0 ... 17 m)
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Operating Voltage
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12 ... 240 V AC/DC (Universal)
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Output Type
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Relay (1 Changeover Contact)
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Switching Capacity
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2 A, max. 250 V AC/DC
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Response Time
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20 ms
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Switching Frequency
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25 Hz
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Technical Specifications (Mechanical & Environmental)
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Parameter
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Specification
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Housing Material
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Plastic
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Protection Rating
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IP67
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Connection
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Terminal Chamber (8 Spring-Loaded Terminals)
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Cable Gland
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M16 x 1.5
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Operating Temperature
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-40 ... +60 °C
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Ambient Light Immunity
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≤ 80000 Lux
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Standard
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EN 60947-5-2
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Dimensions (H x W x D)
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88 x 25.8 x 65.5 mm
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Key Features
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Universal Voltage Supply: Operates on 12-240V AC/DC, eliminating the need for specific power supplies and simplifying spare parts inventory.
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Polarized Light Operation: Equipped with a polarization filter to prevent false triggers from reflective objects like metal or glass.
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High Immunity: Excellent resistance to ambient light (up to 80,000 Lux) and electrical noise, ensuring stable performance in demanding conditions.
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Integrated Relay: The built-in relay contact (2A) allows direct control of loads such as contactors, solenoid valves, or small motors without an intermediate relay.
Applications
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Material Handling: Detection of pallets, boxes, or containers on conveyors over long distances.
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Gate & Door Monitoring: Presence detection for automated gates, garage doors, and access control systems.
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Outdoor & Harsh Environments: Suitable for agricultural machinery, recycling plants, and construction equipment due to its wide temperature range and IP67 rating.
About ACH
Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.
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Frequently Ask & Questions
Are preferential prices available?
Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.
Are the Products Genuine OEM Units?
Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.
How will you arrange shipment?
We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.
What is the warranty of goods?
One-year Warranty.
How long is the logistics cycle of the product?
Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.
