Description
ABB RMIO-01C I/O Control Board for ACS800 Drives – Standard I/O and Fieldbus Expansion, Made Reliable
The ABB RMIO-01C is the main I/O control board used in many ABB ACS800 series drives. From my experience, it’s the piece that ties your drive’s basic control logic to the outside world—your digital inputs, analog signals, relay contacts, and the link to optional fieldbus modules. If you’re maintaining an ACS800 and need a clean, drop-in replacement for a tired I/O board, RMIO-01C typically gets the line back up fast without any rewiring changes.
One thing I appreciate is how consistent it is across ACS800 variants: the layout and terminal philosophy seem to stay familiar, so commissioning remains straightforward. You might notice that when paired with ABB’s fieldbus adapters (like PROFIBUS or Ethernet), the RMIO-01C becomes the backbone for plant-wide connectivity while still keeping your local I/O responsive and simple to service.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery: 1 week for in-stock items; no more than one month at the latest
- Payment: 50% advance payment; full payment prior to delivery
- Express delivery options: FedEx, UPS, DHL
Key Features
- Designed for ABB ACS800 drives – Typically used as the standard I/O board in ACS800 control units, ensuring native compatibility.
- Mixed I/O on-board – 24 VDC logic for digital I/O plus analog 0–10 V / 4–20 mA channels and relay outputs for interlocks and status; counts vary by drive frame and configuration.
- Fieldbus expansion ready – Supports ABB’s plug-in adapters (e.g., PROFIBUS, Ethernet-based options) for easy integration into existing PLC networks.
- Robust internal communication – DDCS fiber-optic link to the power unit provides a fast, noise-immune control backbone inside the drive.
- Service-friendly replacement – Typically a plug-in swap within the drive’s control section; keep your parameter backup and you’re back running quickly.
- Industrial reliability – Intended for cabinet-mounted operation; good immunity to electrical noise when installed per ABB guidelines.
A maintenance supervisor shared that swapping an RMIO-01C into an ACS800 wall-mount unit, reloading saved parameters, and rechecking I/O maps took under an hour—plant production was back before the end of the shift. That’s fairly typical when the existing wiring remains untouched.
Technical Specifications
| Brand / Model | ABB RMIO-01C |
| Product Type | I/O control board for ABB ACS800 variable speed drives |
| HS Code | 8504.90 (Parts of static converters) |
| Power Requirements | 24 VDC control power supplied internally by the drive’s control section |
| Operating Temperature | Typically 0…+55 °C inside a compliant cabinet/drive enclosure |
| Signal I/O Types | 24 VDC digital I/O; 0–10 V / 4–20 mA analog I/O; potential-free relay outputs (exact counts depend on drive frame) |
| Communication Interfaces | DDCS fiber-optic internal link; expansion headers for ABB fieldbus adapters (e.g., FPBA-01 PROFIBUS, FENA-01 Ethernet) |
| Installation Method | Internal plug-in board within the ACS800 control unit; ESD-safe handling required |
| Typical Compatibility | ABB ACS800 series (verify drive frame and firmware revision before ordering) |
Related or Supporting Products
- ABB RMIO-01 (earlier revisions A/B) – Functionally similar control board; check revision compatibility and firmware notes before swapping.
- ABB FPBA-01 – PROFIBUS DP adapter typically installed on the RMIO to enable PLC integration over PROFIBUS.
- ABB FENA-01 – Ethernet adapter commonly used for EtherNet/IP and Modbus/TCP connectivity on ACS800 drives.
- ABB FDNA-01 – DeviceNet adapter for legacy networks where DeviceNet is still in service.
- ABB RDIO-01 – Remote/expanded I/O module options for additional I/O capacity; applicability varies by drive configuration.
Installation & Maintenance
- Preparation – Back up all drive parameters via the control panel or PC tool. Schedule downtime and lock out/tag out the feeder.
- Power-down & safety – Isolate power and wait for DC bus discharge as indicated by the drive. Use an ESD wrist strap to protect the board.
- Board replacement – Remove the drive’s control cover, carefully release the old board, move cabling/optical links one by one, and seat the RMIO-01C firmly on its connectors.
- Wiring & ventilation – Keep control wiring separated from power cables; maintain cabinet ventilation per ABB’s guidelines. Tighten all terminal screws to the specified torque.
- Commissioning – Restore parameters, recheck I/O mapping, verify fieldbus addresses if adapters are present, then perform a test run at low load.
- Routine maintenance – Periodically inspect connectors for looseness, clean dust with dry air (no residue), and keep firmware/tools updated for diagnostics. Avoid corrosive atmospheres or condensation inside the cabinet.
Quality & Certifications
- Manufactured to ABB quality standards; typically used in CE-marked and UL-listed ACS800 drive systems
- RoHS compliant componentry (as part of the ABB drive platform)
- Production under ISO 9001 quality management (manufacturer)
- Manufacturer warranty applies when sourced through ABB channels; our supply is backed by a 365-day warranty
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