BIHL+WIEDEMANN BWU2267 AS-i Communication Module

Description

BIHL+WIEDEMANN BWU2267 AS-i Communication Module

Product Dimensions：

The Bihl+Wiedemann BWU2267 is a specialized AS-Interface (AS-i) 4E/4A Counter Module. It is a decentralized I/O module designed for the high-speed processing of pulse signals from encoders or sensors, serving as a critical bridge between field-level counting tasks and a central PLC.

Product Detailed Description

The BWU2267 is a digital counter module housed in a compact, rugged IP20-rated enclosure for cabinet mounting. It features 4 inputs and 4 outputs. Specifically, it can be configured to handle up to two high-speed counters or four standard digital inputs. This module is essential for applications where standard PLC scan times are too slow to accurately capture fast pulse sequences (like those from rotary encoders).

Technical Parameters

Key Product Advantages

• Decentralized Intelligence: Processes fast pulse counts locally and sends the results via the AS-i bus, significantly reducing the load on the central CPU.

• Versatility: Can be used as a simple digital I/O module or a high-speed counter, providing flexibility for different machine designs.

• Cost-Efficient Wiring: As with all AS-i components, it uses the “yellow cable” system, which drastically reduces the amount of wiring compared to traditional point-to-point connections.

• Compact Footprint: The narrow housing design (typically 22.5 mm wide) saves valuable DIN rail space in control cabinets.

Important Considerations & Precautions

• AS-i Power Load: The module draws its power from the AS-i cable. Ensure your AS-i power supply has enough capacity to support the cumulative current draw of all modules and connected sensors.

• Signal Shielding: For high-speed counting applications (above 10 kHz), ensure that encoder cables are properly shielded and grounded to prevent electromagnetic interference (EMI) from corrupting the count.

• Addressing: Before installation, the module must be assigned a unique AS-i address using a handheld addressing tool or via the AS-i Master software.

• Environmental Limit: Being IP20, this unit must be installed in a protected enclosure (cabinet). It is not designed for direct exposure to water or heavy dust.

Product Applications

The BWU2267 is primarily utilized in automated material handling and high-speed production lines:

• Conveyor Systems: Measuring the distance or position of items using rotary encoders.

• Packaging Machinery: Controlling the length of film or the timing of cutting blades via pulse counts.

• Flow Metering: Counting pulses from flow sensors to measure liquid or gas volumes.

• Positioning Tasks: Basic positioning control for elevators, lift tables, or indexing tables.

Payment: Bank of Chicago, Bank of Singapore

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