
The RMIO-01 is a control and I/O board used in ABB drive systems (e.g. ACS800 series) to manage the drive's internal signals and external interfaces. It provides the central processing and I/O functionality for the drive, handling analog inputs (such as speed references), analog outputs, digital inputs/outputs, and feedback signals for motor control. The RMIO-01 board is designed for drives in the 230–500 V range and is a critical component in the drive's control unit. It features multiple connector interfaces for drive sensors and options, and includes built-in protections and status LEDs. Physically, the RMIO-01 is a printed circuit board approximately 242 × 100 mm in size, which installs inside the drive's control section. By processing inputs (e.g. start/stop commands, analog setpoints) and outputs (to gate drivers, etc.), and hosting the drive firmware, the RMIO-01 board orchestrates motor control operations in real time. Its robust design and inclusion of galvanically isolated I/O ensure reliable operation of the drive's control functions in industrial environments.
| Application | Control & I/O board for ABB drives (e.g. ACS800, 230–500 V class) |
| Power Supply | Internal supply from drive (control circuit voltage) |
| Analog Inputs | Multiple channels (typical: 3 AI for speed, torque references, etc. – 0/4–20 mA or ±10 V) |
| Analog Outputs | At least 2 AO (0/4–20 mA or ±10 V for feedback signals) |
| Digital I/O | Several DI (start/stop, interlocks) and DO (relay outputs, status) – exact count per drive configuration |
| Rotor Feedback | Supports encoder/resolver interface via separate module (through board connectors) |
| Mounting | Internal to drive (pluggable board, 242 mm length × 100 mm width) |
| Operating Range | 0 °C to +50 °C (inside drive; cooling provided by drive's system) |
| Notable Features | Galvanically isolated I/O, on-board LED indicators, supports fieldbus adapter connection (via dedicated slot on RMIO) |
| Drive Compatibility | ABB ACS800 drives (and similar) in 230–500 V voltage range; enables motor control, protection and communication functions |





