Pepperl+Fuchs WCS3B-LS221 Read Head RS 485 Sensor

Pepperl+Fuchs WCS3B-LS221 Read Head RS 485 Sensor

Product Introduction

The Pepperl+Fuchs WCS3B-LS221 belongs to the WCS3B series of read heads. This device works as a non-contact position sensor for industrial automation. Specifically, it reads coded rails to determine linear position. The unit supports an RS 485 interface for reliable data transfer. Furthermore, it operates on 10 to 30 VDC with low power consumption of 2 VA. The WCS3B-LS221 suits demanding applications such as conveyor systems, storage retrieval machines, and elevator controls. Additionally, its IP54 rating protects against dust and water splashes. Meanwhile, the M12 5-pin connector simplifies wiring. This read head delivers binary code output at 62.5 kBit/s. In addition, the maximum passage speed reaches 12.5 m/s, which supports fast motion profiles. Therefore, it is a solid choice for precise linear positioning tasks.

Technical Specifications

First, the passage speed v stays at or below 12.5 m/s. The measuring range extends to a maximum of 314.5 m. Free tolerances to the code rail are horizontal 31 mm (±15.5 mm) and vertical 28 mm (±14 mm). Moreover, the resolution is ±0.4 mm, equal to 1,250 positions per meter. The interface type is RS 485 with binary code data output. Protocol 1 and 2 are available. The transfer rate reaches 62.5 kBit/s. Address is set to 0, and RS 485 termination is included. Operating voltage UB ranges from 10 to 30 V DC. Power consumption P0 is 2 VA. In addition, MTTd is 236 years, Mission Time is 20 years, and Diagnostic Coverage is 0%. For indicators, a green LED shows power on. A yellow LED indicates active data communication. A red LED flashes when the read head is outside the code rail. A solid red LED means an internal diagnostic test failed.

Mechanical and Environmental Parameters

The WCS3B-LS221 uses a 5-pin, M12 x 1 connector. Its degree of protection is IP54. The housing material is ABS and PC (polycarbonate). Mass is 500 g. Operating temperature ranges from 0 to 60 °C (32 to 140 °F). Storage temperature spans -40 to 85 °C (-40 to 185 °F). Relative humidity is 90%, noncondensing. For shock resistance, the device meets DIN EN 60068-2-27 with half sine 30 g for 18 ms. Vibration resistance follows DIN EN 60068-2-6, sine, 5 g, 10 to 2000 Hz, 10 cycles. Emitted interference complies with DIN EN 61000-6-4 and DIN EN 12015. Noise immunity meets DIN EN 61000-6-2 and DIN EN 12016. Approvals include cCSAus Certified, General Purpose, Class 2 power source. CCC approval is not required for products rated ≤36 V.

Installation Guide

Mounting the WCS3B-LS221 requires attention to alignment with the code rail. First, use the included mounting plate to secure the read head. Next, keep horizontal tolerance within ±15.5 mm and vertical tolerance within ±14 mm. Besides, maintain a non-contact gap to avoid mechanical wear. Then, connect the M12 5-pin connector to a 10-30 VDC power supply. After that, wire the RS 485 interface with proper termination. Meanwhile, verify the green LED turns on for power. Also, check the yellow LED for data flow. Finally, confirm the red LED stays off during normal operation. If the red LED flashes, adjust the read head inside the code rail. If it stays solid, run an internal diagnostic check.

Packaging List

• 1 x Pepperl+Fuchs WCS3B-LS221 Read Head

• 1 x Mounting Plate

• 1 x Quick Start Guide

FAQ

Q1: What is the measuring range of the WCS3B-LS221?
A: The maximum measuring range is 314.5 m, with a resolution of ±0.4 mm.

Q2: Which interface does this read head use?
A: It uses an RS 485 interface with binary code output and a 62.5 kBit/s transfer rate.

Q3: What is the operating voltage for the WCS3B-LS221?
A: The operating voltage range is 10 to 30 V DC, with 2 VA power consumption.

Q4: How do I know if the read head is outside the code rail?
A: The red LED flashes when the read head is outside the code rail.

Q5: What shipping methods are available?
A: We ship via Fedex, UPS, and DHL.