Считывающие головки Pepperl+Fuchs

Two read head styles are available: the WCS2B and WCS3B.

From a technology standpoint, they are very similar. Their available control interface formats, RS-485 and SSI, are the same. Their resolution is also virtually identical (0.833 mm for the WCS2B vs. 0.8 mm for the WCS3B).

The models do possess some differences in accessory packages and mechanical structure that make them uniquely suited for specific applications.

WCS2B

The WCS2B features a narrow 10 mm slot width. The close proximity of emitter and receiver LEDs yields a high excess gain, making it the best choice for very dirty environments such as galvanizing facilities, foundries and steel mills. An optional trolley and rail system adapts the WCS2B for operation where imprecise mechanical linkages and vibrations are unavoidable. Such tolerance considerations are common in automatic crane systems.

WCS3B

The WCS3B features a comparatively larger 30 mm slot width. It is ideally suited for monitoring overhead or floor-based conveyors, automated storage and retrieval systems, and lift/lower stations. WCS3B readers also include integral LEDs and an optional seven-segment display for detailed position and diagnostic feedback.

Control Interfaces

Various control modules are available that convert the RS-485 signals of both WCS2B and WCS3B readers to alternative protocols, including:

• Parallel
• Profibus DP
• DeviceNet
• InterBus-S
• CANopen
• SSI
• Ethernet
• Profinet
• Modbus-RTU