Description
Product Description
The ABB RMBA-01-KIT is a fieldbus communication adapter package developed to interface ABB variable frequency drives with Modbus RTU networks. It enables structured data exchange between drive controllers and higher-level systems such as PLCs, HMIs, and SCADA platforms through a serial RS-485 connection.
This adapter is designed for direct integration into ABB drive control boards, allowing parameter access, status monitoring, and command control via Modbus registers. With built-in galvanic isolation, the module enhances signal integrity and protects connected devices from electrical noise and ground potential differences commonly found in industrial installations.
The RMBA-01-KIT is widely implemented in drive-based automation systems where standardized serial communication and reliable data acquisition are required.
Technical Specifications
| Parameter |
Description |
| Product Type |
Modbus RTU Communication Adapter Kit |
| Model |
RMBA-01-KIT |
| Supported Protocol |
Modbus RTU (serial, asynchronous) |
| Physical Interface |
RS-485 (2-wire or 4-wire selectable) |
| Optional Interface Note |
RS-232 supported in certain system configurations |
| Baud Rate |
Configurable, up to 115.2 kbps |
| Isolation |
Galvanic isolation between drive and network |
| Connectivity |
Screw terminal electrical connections |
| Data Mapping |
Drive parameters mapped to Modbus holding registers (4xxxx) |
| Installation |
Plug-in module for ABB drive control boards |
| Compatible Drives |
ABB ACS series (ACS550, ACS800, others supporting fieldbus adapters) |
| Operating Temperature |
Up to 40°C |
| Dimensions |
95 × 65 × 34 mm |
| Weight |
0.31 lbs |
Functional Characteristics
-
Enables Modbus RTU communication for ABB drive systems
-
Supports flexible RS-485 network topologies
-
Integrated isolation improves reliability in electrically noisy environments
-
Direct parameter access and control via Modbus register mapping
-
Designed for seamless integration with ABB fieldbus adapter architecture
-
Compact form factor suitable for drive cabinet installation
Application Areas
-
Variable speed drive monitoring and control
-
PLC-based automation systems using Modbus RTU
-
SCADA integration for process visualization and diagnostics
-
Industrial data acquisition and parameter logging
-
Retrofitting legacy drive systems with standardized communication
FAQ
Which ABB drives are compatible with the RMBA-01-KIT?
It is commonly used with ACS550 and ACS800 drives, as well as other ABB models that support RMBA-01 fieldbus adapters.
Does the module require external power?
No. Power is supplied directly from the drive via the control board interface.
What type of network wiring is supported?
RS-485 2-wire and 4-wire configurations are supported, allowing flexible network design.
Is isolation included in the communication interface?
Yes, galvanic isolation is built in to protect both the drive and the communication network.
