ABB 1TNA920611R0002 M102-M MODBUS RTU Module

Description

The ABB 1TNA920611R0002, also cataloged as the M102-M MODBUS RTU module, is designed for current transformer (CT) monitoring and digital input integration in industrial automation systems. It supports CT ranges from 0.24 A to 63.0 A and operates with a 24 VDC auxiliary supply, providing MODBUS RTU communication for distributed control applications.

Hardware Specifications

• Product ID: 1TNA920611R0002
• Manufacturer: ABB Industrial Systems
• Series: M102-M
• Product Type: MODBUS RTU Module
• CT Range: 0.24–63.0 A
• Digital Input Supply: 24 VDC
• Auxiliary Supply: 24 VDC
• Country of Origin: India, China
• Gross Weight: 960 g (Net)
• Operating Temperature: Not specified (standard industrial range assumed)
• Mounting: DIN-rail compatible (typical for ABB modules)
• Manual Reference: ABB datasheet (GEI-100467 equivalent not provided)

Profinet / EtherNet/IP Deterministic Networks

The M102-M module communicates via MODBUS RTU protocol, ensuring deterministic data transfer across industrial networks. Integration with ABB Infi 90 and related systems allows scalable I/O density and firmware flash compatibility. Backplane bus communication velocity is optimized for CT signal acquisition and digital input synchronization, maintaining accuracy across distributed installations.

Frequently Asked Questions (FAQ)

Q: What CT ranges are supported by the M102-M module? A: The module supports CT ranges from 0.24 A to 63.0 A.

Q: Does the module require an auxiliary supply? A: Yes. It operates with a 24 VDC auxiliary supply.

Q: Can the module be integrated into redundant MODBUS RTU networks? A: Yes. MODBUS RTU supports redundant communication paths when configured with appropriate master-slave topology.

Field Installation Guidelines

• Mount the module on a DIN rail within the control cabinet.
• Connect CT wiring according to specified input range (0.24–63.0 A).
• Ensure auxiliary supply of 24 VDC is stable and properly fused.
• Route digital input wiring with shielding to minimize noise.
• Verify MODBUS RTU address configuration before commissioning.
• Maintain proper grounding practices to avoid communication errors.