ABB CRBX01 2VAA008424R1 Compact Remote Bus Extender

Description

Technical Specifications

Communication Performance

• Bus Type: HN800 remote I/O bus (Symphony Plus)
• Transmission Medium: Fiber-optic (62.5/125 µm multi-mode fiber)
• Max Transmission Distance: Up to 3 km (multi-mode fiber)
• Data Rate: Synchronized with main bus speed (up to 4 Mbps)
• Device Capacity: Supports up to 60 HN800 devices per remote link
• Topology: Point-to-point star topology; up to 8 remote links per controller
• Redundancy: Supports redundant configuration (paired with VMU610 base for hot standby)

Electrical & Power Specifications

• Supply Voltage: 24 V DC (operating range: 19.2 V – 28.8 V DC)
• Power Consumption: 90 mA (typical), 100 mA (max) @ 24 V DC
• Isolation: Full galvanic isolation between electrical and fiber-optic circuits
• Overvoltage Protection: Category 1 per IEC/EN 61010-1
• Reverse Polarity Protection: Integrated protection against incorrect power connection

Physical & Environmental Specifications

• Dimensions: 127 mm (H) × 34 mm (W) × 128 mm (D)
• Weight: Approx. 0.166 kg (166 g)
• Mounting: DIN-rail mounting (35 mm standard) with VMU610 base module
• Ingress Protection: IP20 (housing)
• Operating Temperature: -40°C to +70°C
• Storage Temperature: -40°C to +85°C
• Relative Humidity: 20% to 95% non-condensing
• Vibration/Shock Resistance: Compliant with IEC 60068-2-1, IEC 60068-2-2, MIL-STD-810G
• Pollution Degree: 2 (IEC 61131-2)

Interfaces & Connectivity

• Fiber Connectors: Standard multi-mode fiber connectors with right-angle stress relief
• Diagnostic Port: Front-panel mini-USB for on-site fault diagnosis and firmware updates
• Power Connection: Terminal block on VMU610 mounting base

Certifications & Compliance

• Safety Certifications: CE, UL, CSA
• EMC Compliance: IEC 61000-6-2 (immunity), IEC 61000-6-4 (emission)
• RoHS/WEEE: EU RoHS 2011/65/EU; WEEE Directive 2012/19/EU compliant

Functional Features

• Long-Distance Communication: Extends HN800 bus reach up to 3 km via fiber optics, overcoming distance limitations of copper cabling.
• EMI Immunity: Fiber-optic transmission eliminates electromagnetic interference, ensuring reliable operation in industrial environments with high electrical noise.
• High Device Capacity: Supports up to 60 HN800 I/O/communication modules per link, enabling large-scale distributed control systems.
• Plug-and-Play Operation: Requires no configuration or programming; automatically synchronizes with the main HN800 bus.
• Redundancy Support: Enables redundant bus configuration for enhanced system availability and fault tolerance.
• Compact Design: Space-saving form factor ideal for dense control cabinet installations.
• Diagnostic Capabilities: Mini-USB port for real-time communication status monitoring and firmware upgrades.
• Industrial Robustness: Wide temperature range and high vibration/shock resistance for operation in extreme industrial conditions.
• Seamless Integration: Direct compatibility with ABB Symphony Plus controllers and SD Series HN800 I/O modules.
• Passive Repeater Function: No active processing, ensuring minimal signal delay and maximum bus performance.

Application Scenarios

• Large-Scale Industrial Plants: Extends control reach in automotive manufacturing, steel mills, and heavy machinery facilities, connecting distributed I/O across vast production areas.
• Process Industries: Deployed in chemical, pharmaceutical, and food processing plants for reliable long-distance communication between control rooms and field equipment.
• Power Generation & Distribution: Used in power plants and substations to extend HN800 bus communication to remote switchgear and monitoring equipment.
• Oil & Gas Facilities: Enables fiber-optic communication in onshore/offshore drilling and processing plants, ensuring signal integrity in hazardous and EMI-prone environments.
• Mining Operations: Provides robust, long-distance control connectivity in underground and surface mining facilities with high electrical noise.
• Water & Wastewater Treatment: Connects remote pump stations, filtration systems, and monitoring equipment to central control systems in water treatment plants.
• Marine & Offshore: Used on ships and offshore platforms for distributed control system expansion in harsh marine environments.
• System Expansion & Retrofit: Upgrades existing Symphony Plus systems by extending bus reach and adding remote I/O nodes without major infrastructure changes.
• Distributed Control Networks: Serves as a core component in large DCS architectures, enabling centralized control of geographically dispersed industrial processes.