ABB cRBX01 2VAA008424R1 Compact Remote Bus Extender
Manufacturer: ABB
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Part Number: CRBX01
Condition：New with Original Package
Product Type: Remote Bus Extenders
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
ABB cRBX01 Symphony Plus Compact Remote Bus Extender
The ABB cRBX01 (Part Number: 2VAA008424R1) is a compact fiber-optic remote bus extender designed for the ABB Ability Symphony Plus Distributed Control System. It functions as an optical repeater that transparently extends the redundant HN800 I/O bus or the CW800 peer-to-peer communication bus between controllers and remote stations. Operating without software configuration, the module maintains identical performance and capacity for remote I/O modules as local devices over multimode fiber links up to 3 km.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | cRBX01 |
| Brand | ABB |
| Part Number | 2VAA008424R1 |
| Product Family | ABB Ability Symphony Plus |
| Product Type | Compact Remote Bus Extender / Fiber-Optic Repeater |
| Compatible Bus Systems | HN800 I/O bus / CW800 controller bus |
| Transmission Speed | 4 Mbps |
| Fiber-Optic Connectors | 2x ST-style connectors |
| Fiber Cable Type | 62.5/125 um multimode fiber |
| Optical Wavelength | 840 nm |
| Fiber Attenuation | -3.5 dB/km |
| Fiber Bandwidth | 160 MHz/km |
| Maximum Transmission Distance | Up to 3 km per remote link |
| Network Topology | Star (point-to-point) |
| Maximum Remote Links | Up to 8 per controller |
| Maximum Devices per Link | Up to 60 HN800 devices |
| Power Supply | 24 V DC (+16% / -10% tolerance) |
| Operating Temperature | -40 to +70 deg C |
| Mounting Base | Compatible with RMU610 or VMU610 mounting bases |
| System Configuration | Zero configuration required |
| Redundancy Support | Supports redundant line configurations (available via HRBX01K02 kit) |
Fiber-Optic Transmission and Bus Extension
The cRBX01 utilizes two ST-style optical connectors operating at an 840 nm wavelength over 62.5/125 um multimode fiber cables to bridge remote automation areas. With a 4 Mbps data rate, it supports up to 60 HN800 devices per remote link and up to 8 remote links per controller, enabling wide facility coverage up to 3 km per segment.
Verification: Confirm that optical attenuation across fiber splices and connectors does not exceed the transmission loss budget for the 3 km range.
The extender operates transparently without requiring user setup or addressing configuration. It can also be deployed in redundant line configurations, often packaged with the RMU610 mounting base (such as in the HRBX01K02 kit) to ensure high-availability communication across distributed control nodes.
Powering and Environmental Specifications
Operating power is supplied at 24 V DC, accommodating a supply tolerance window ranging from +16% to -10%. The module mounts directly onto dedicated RMU610 or VMU610 mounting bases inside industrial control enclosures.
Verification: Ensure the 24 V DC supply voltage remains within the specified -10% to +16% tolerance limits under full plant load.
Built for harsh industrial deployments, the module functions across an operating temperature range of -40 to +70 deg C. It maintains robust signal isolation against electrical interference in power generation, water treatment, and heavy process automation plants.
Frequently Asked Questions
Q: What is the primary function of the ABB cRBX01 module? A: It acts as an optical repeater that extends the HN800 I/O bus or CW800 bus over multimode fiber-optic cables up to 3 km.
Q: Does the cRBX01 require software configuration during installation? A: No, the module functions transparently and requires zero configuration.
Q: What fiber-optic cable type and connectors are utilized by the module? A: It uses 62.5/125 um multimode fiber cabling interfacing through dual ST-style optical connectors operating at an 840 nm wavelength.