NMBA-01 ABB Modbus Adapter Module

Product Description

Configured for Modbus communication in ABB drives, the ABB NMBA-01 Modbus Adapter Module (NMBA-01 Modbus Adapter Module) provides a physical interface between the drive and a Modbus network. The drive operates as a slave device. The module transfers control commands, speed or torque references, process values, status data, actual values, parameter data, and fault-reset commands between the Modbus network and the drive.

Hardware Specifications

Modbus Communication and Drive Control

The NMBA-01 exchanges drive control and monitoring data through the Modbus network. Therefore, the network master can issue supported drive commands while the drive remains the slave device.

The module supports several data functions:

• Start and stop commands
• Run enable commands
• Motor speed references
• Motor torque references
• Process references for the drive PID controller
• Process actual values
• Drive status information
• Drive actual values
• Drive parameter value changes
• Drive fault reset
• Multiple Drive Control

The available Modbus commands and services depend on the connected ABB drive. Therefore, the drive documentation must be checked to determine which commands the specific drive supports.

Frequently Asked Questions

Q: Does the NMBA-01 operate as a Modbus master?
A: No. The connected ABB drive is treated as a slave in the Modbus network. The NMBA-01 provides the communication interface between the drive and the Modbus system.

Q: Can the NMBA-01 change drive parameters?
A: Yes. The supplied documentation identifies drive parameter value changes as a supported function. The actual parameters available depend on the connected drive.

Q: Where is the NMBA-01 installed?
A: The module mounts on a standard mounting rail. Depending on the drive type and configuration, it can be installed inside or outside the drive unit.

Field Installation Guidelines

Install the NMBA-01 on the specified standard mounting rail and follow the mounting arrangement defined for the applicable ABB drive.

Before wiring, verify the module placement options and communication connections in the corresponding drive manual. Keep Modbus communication wiring separated from high-voltage power conductors where practical to reduce electrical interference.

Terminate and shield communication wiring according to the applicable ABB drive and Modbus installation instructions. Avoid unnecessary cable loops and maintain secure mechanical connections at the module and network interfaces.

After installation, verify the Modbus network configuration, drive slave addressing, communication parameters, and supported command set before issuing control commands. Confirm that the selected drive supports the required Modbus services.

Other Attributes

• Series: ACS2000
• Country of Origin:  Germany/Sweden/Finland
• Lead Time: In Stock, 2 Working Days

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