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BCU-22 Control Unit - Industrial Drive ABB

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ABB BCU-22 Industrial Drive Control Unit

The BCU-22 from ABB Industrial Drives delivers precision control for industrial automation systems. This advanced unit combines accurate analog outputs with robust communication capabilities.

Product Overview

The BCU-22 provides reliable performance in demanding industrial environments with comprehensive I/O options. It features high-precision analog outputs for accurate process control.

Technical Specifications

Analog Outputs

  • 2 channels (AO1, AO2) 0-20 mA range
  • Load resistance under 500 ohm
  • Frequency range: 0-500 Hz
  • Resolution: 11 bit plus sign bit
  • Accuracy: 2% of full scale range

Communication Interfaces

  • Dual RS-485 interfaces available
  • High-speed 8 Mbit/s transmission rate
  • Maximum cable length: 50 meters
  • Shielded twisted-pair cable required
  • Switch-selectable termination

Power Supply

  • 24V DC input with ±10% tolerance
  • 2A current capacity
  • Dual supply redundancy support
  • External power input capability

Relay Outputs

  • 3 relay outputs (RO1 to RO3)
  • 250V AC / 30V DC rating
  • 2A current capacity per output
  • Varistor protection included
  • Total load capacity: 4.8W

Digital Inputs

  • 6 digital inputs (DI1 to DI6)
  • 24V logic levels: 0 under 5V, 1 over 15V
  • 2.0 kohm input resistance (DI1-DI5)
  • NPN/PNP compatibility (DI1-DI5)
  • PNP only for DI6 input

Installation Guide

  • Connect power supplies to XPOW terminals for redundancy
  • Use proper shielded cables for RS-485 communication
  • Ensure load resistance under 500 ohm for analog outputs
  • Implement start interlock for safety requirements
  • Configure hardware filtering for signal stability

Shipping Information

  • Units available for immediate shipment
  • Worldwide delivery via FedEx, UPS, DHL
  • No minimum order quantity required
  • Secure industrial packaging included

Frequently Asked Questions

What is the analog output accuracy?

The analog outputs maintain 2% accuracy across the full scale range with 11-bit resolution.

How many power supplies can be connected?

Two independent power supplies can be connected for redundant operation.

What cable type is recommended for RS-485?

Use shielded twisted-pair cable with 100-165 ohm impedance, such as Belden 9842.

What sensor types are supported?

Digital inputs DI1-DI5 support both NPN and PNP sensors, while DI6 is PNP only.

What is the maximum communication distance?

The RS-485 communication supports distances up to 50 meters with proper cabling.

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