1TNA920711R0002 ABB M102-P Motor Control Unit

Product Description
1TNA920711R0002 is ABB M102-P intelligent motor control and protection unit, part of the M102 series. It integrates motor protection, measurement, control and communication functions for low-voltage three-phase motors. This model supports Modbus RTU communication, covers current measurement range 0.24–63A, and is widely used in MCC motor control centers for industrial motor management.

Key Features

• Full motor protection: overload, phase loss, phase imbalance, earth fault, locked rotor, underload protection
• High precision current & voltage measurement, power and energy monitoring
• Modbus RTU communication interface for connection to PLC/DCS systems
• Programmable digital inputs and relay outputs for start/stop control and alarm signals
• Local LED status indication, fault recording and event log for troubleshooting
• Compact MCC plug-in design, easy installation and replacement inside motor control cabinets
• Configurable protection curves to match different types of induction motors

Application Scenarios

• Motor control centers (MCC) in power plants, water treatment plants
• Oil & gas, chemical, cement and mining industry low-voltage motor control
• HVAC, pumping stations, fans and conveyor motor protection
• Factory DCS system remote motor monitoring and control

FAQ

Q: What is the difference between M102-P and M102-M?
A: M102-P has panel operator display, while M102-M is the basic version without local display.

Q: What communication protocol does 1TNA920711R0002 use?
A: Standard Modbus RTU over RS485.

Q: What current range can this unit measure?
A: CT range 0.24A up to 63A for motor protection.