BCU-22 Control Unit - Industrial Drive ABB

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.