TeSys T Motor Management in One Controller
The LTMR08MFM is part of Schneider Electric's TeSys T motor management system, providing more than basic motor overload protection. It brings motor current sensing, protection, monitoring and control functions together in a single controller.
This makes it suitable for applications where the motor needs to be monitored as part of an automation system, rather than operating as an isolated motor starter. Motor information can be accessed through the controller's communication interface or other supported control methods.
Designed for 0.4–8 A Motor Applications
The LTMR08MFM is designed for motors within a 0.4–8 A current range. This range is an important part of the selection process, particularly when the controller is being used as a replacement for an existing TeSys T installation.
The LTMR08MFM is specifically the Modbus, 100–240 V AC version of the 0.4–8 A LTMR controller family. Schneider Electric's documentation shows other LTMR references with different current ranges, communication protocols and control voltages, so the complete reference should be checked when selecting a replacement.
Motor Protection and Condition Monitoring
A major advantage of the TeSys T approach is the combination of motor protection, monitoring and pre-alarming. The controller can monitor motor operating conditions and provide protection-related information to the control system.
For equipment where unexpected motor trips or abnormal operating conditions can affect production, having this information available through the motor management system can make troubleshooting and maintenance more straightforward.
Modbus Communication for Automation Systems
The LTMR08MFM uses Modbus communication, allowing motor-related information to be exchanged with a compatible PLC, HMI or supervisory control system.
This is particularly useful in motor control centers and automated equipment where operators need access to motor status, alarms and protection information without relying entirely on local inspection.
Six Logic Inputs and Relay Outputs
The controller provides six discrete logic inputs and relay outputs for motor control and associated logic functions. These I/O points allow the LTMR08MFM to interact with external control signals and the motor control circuit.
The controller also provides connections for a motor temperature sensor and ground-current sensor within the TeSys T system architecture, depending on the application and selected system components.
Optional Electrical Measurement Expansion
For applications requiring more than current monitoring, Schneider Electric provides an optional expansion module that can add voltage, power and energy measurement.
This can be useful when motor management is also part of an equipment energy-monitoring strategy, although the additional measurement functions depend on the selected TeSys T configuration.
Typical Application Scenarios
The LTMR08MFM can be useful in several types of industrial equipment and motor-control applications:
- Motor control panels where individual motors require integrated protection and monitoring.
- Industrial machinery where motor status and alarms need to be communicated to the machine control system.
- Pumps and process equipment where motor protection and remote monitoring are important for continuous operation.
- Material-handling equipment where motor faults can interrupt automated processes.
- Existing TeSys T installations where an original LTMR controller needs to be replaced or kept available as a spare.
- Motor management systems where Modbus communication is required for connection to a PLC or supervisory system.
Important for Replacement Projects
The LTMR08MFM is particularly relevant to replacement and maintenance projects, but its lifecycle status should be considered when planning a new installation.
Schneider Electric currently lists the LTMR08MFM as to be discontinued on September 30, 2026, with end of standard service scheduled for January 31, 2027 on the US product page. Schneider Electric also identifies TeSys Tera combinations as replacement products. The appropriate replacement depends on the required motor current range and existing system configuration, so it should be checked before substituting the original controller.
FAQ
What is the Schneider Electric LTMR08MFM?
The LTMR08MFM is a TeSys T motor management controller used for monitoring, controlling and protecting AC induction motors. It combines current sensing, motor protection, monitoring, control and Modbus communication functions.
What motor current range does LTMR08MFM support?
The LTMR08MFM is designed for a 0.4–8 A motor current range. The current range should be checked against the motor's actual operating requirements when selecting or replacing the controller.
What communication protocol does LTMR08MFM use?
The LTMR08MFM uses Modbus communication. It can therefore be integrated into compatible PLC, HMI and industrial automation systems.
Can LTMR08MFM be used as a replacement for another LTMR controller?
It depends on the original controller. The replacement must match the motor current range, control voltage, communication protocol and system configuration. A controller with a similar appearance or current rating should not automatically be treated as a direct replacement.
Is LTMR08MFM still available?
Schneider Electric's US product page currently lists LTMR08MFM as scheduled for discontinuation on September 30, 2026, with end of standard service on January 31, 2027. Schneider Electric also lists TeSys Tera replacement combinations, but the correct replacement should be selected according to the existing application.
