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- LTMR08MFM
- Motor Controller
- France
- 91 × 61 × 122.5 mm
- 0.53 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Schneider LTMR08MFM TeSys T Motor Controller is a motor management device used to monitor, control, and protect compatible low-voltage motor applications. It belongs to the TeSys T motor management platform, where motor-specific operating information is combined with control and protection functions.
The controller is typically installed as part of a motor feeder alongside switching and protection equipment. It can monitor the operating condition of the motor circuit and exchange control or status information with a higher-level automation system.
In applications such as conveyors, pumps, fans, compressors, and production machinery, the LTMR08MFM can provide a dedicated motor-management point between the PLC and the motor starter circuit. This arrangement reduces the need to handle all motor-specific protection and diagnostic functions directly in the PLC program.
The LTMR08MFM is therefore part of the motor-control layer rather than a general-purpose PLC. Its functions are coordinated with contactors, protection devices, communication equipment, and the machine controller to manage the complete motor application.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | LTMR08MFM |
| Product Family | TeSys T |
| Product Type | Motor Controller |
| Primary Function | Motor control, monitoring, and protection |
| System Role | Motor management and control |
| Typical Application | Industrial motor control and automation |
| Dimensions | 91 × 61 × 122.5 mm |
| Weight | 0.53 kg |
Product Features
- TeSys T Motor Controller for industrial motor management.
- Combines motor monitoring with dedicated control and protection functions.
- Supports integration between motor starter circuits and automation controllers.
- Provides motor operating and diagnostic information to the control system.
- Works with associated TeSys switching and protection components.
- Suitable for automated machinery and process equipment.
- Supports centralized supervision of managed motor loads.
- Can be integrated into industrial motor-control architectures.
Working Principle
The LTMR08MFM monitors the electrical condition of a connected motor and applies the configured motor-management functions to the operating circuit. Control commands can originate from the local control arrangement or a higher-level automation controller.
PLC / Automation Controller → LTMR08MFM → Motor Switching Equipment → Motor → Mechanical Load
During operation, the controller evaluates available motor operating information and uses the configured protection logic to identify abnormal conditions. The associated switching equipment then establishes or interrupts the motor power circuit according to the control sequence.
The controller can also communicate motor status, operating conditions, and diagnostic information to the automation system. This allows a PLC or supervisory system to coordinate motor operation while the TeSys T controller handles motor-specific management functions.
Role in a Schneider TeSys T Motor Management Architecture
The LTMR08MFM occupies the motor-management layer between the machine-control system and the motor starter circuit. It connects motor-specific monitoring and protection with the broader automation architecture.
PLC / Machine Controller → LTMR08MFM → Contactor / Starter → Motor → Machine Load
| System Element | Function |
|---|---|
| PLC / Machine Controller | Executes machine and process sequencing |
| LTMR08MFM | Provides motor control, monitoring, protection, and diagnostics |
| Contactor / Starter | Switches the motor power circuit |
| Protection Device | Provides upstream circuit protection |
| Motor | Converts electrical energy into mechanical motion |
| Machine Load | Performs the required mechanical process |
| HMI / SCADA | Displays motor status, alarms, and diagnostic information |
This arrangement allows the PLC to manage the overall machine sequence while the motor controller concentrates on the electrical and operating condition of the managed motor.
Industrial Applications
| Application | Typical Use |
|---|---|
| Conveyor Systems | Motor starting, monitoring, and protection |
| Pump Stations | Motor operation and fault supervision |
| Fans and Blowers | Motor condition monitoring and protection |
| Compressor Systems | Motor management within automated equipment |
| Material Handling | Coordinated control of individual motor loads |
| Production Machinery | Motor status and protection within machine control |
| Process Equipment | Managed motor operation and diagnostic monitoring |
Installation and Maintenance
- Confirm that the LTMR08MFM is suitable for the intended TeSys T motor-management architecture.
- Verify the motor application and associated starter or switching equipment before installation.
- Check the approved electrical schematic for power, control, and communication connections.
- Install the controller securely within the designated motor-control assembly.
- Verify the motor feeder and upstream protection before energizing the system.
- Confirm the required motor-management configuration before commissioning.
- Check communication connections between the LTMR08MFM and higher-level automation equipment where applicable.
- Verify motor status and available operating information during controlled startup.
- Test start, stop, reset, alarm, and configured protection functions under safe commissioning conditions.
- Inspect wiring, terminals, and contactor connections if the motor does not respond as expected.
- Review controller diagnostics when abnormal motor conditions, protection trips, or communication faults occur.
- After replacement, verify motor control, protection, status feedback, diagnostics, and communication with the complete automation system before returning the equipment to service.
Compatible System Components
| Component | Function |
|---|---|
| Schneider TeSys T System | Provides motor management and protection architecture |
| TeSys T Contactor / Starter | Switches the managed motor circuit |
| Motor Protection Device | Provides upstream feeder protection |
| Schneider PLC | Executes machine and process control logic |
| Communication Network | Exchanges motor commands and operating information |
| HMI / SCADA | Displays motor status, alarms, and diagnostic information |
| Motor | Converts electrical power into mechanical movement |
| Machine Load | Performs the required production or process function |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Schneider TeSys T | Motor Management System | Industrial motor control and protection |
| Schneider LTMR08 Series | Motor Controller | Motor management and monitoring |
| Schneider LTMR27 Series | Motor Controller | Industrial motor control applications |
| Schneider LTMR100 Series | Motor Controller | Advanced motor management |
| Schneider TeSys T Controllers | Motor Controller | Motor control and protection |
| Schneider TeSys Contactors | Contactor | Motor circuit switching |
| Schneider Modicon PLC | PLC Platform | Machine and process control |
| Schneider TeSys T Communication Modules | Communication Module | Motor-management system networking |
Key Advantages
- Combines motor monitoring, control, protection, and diagnostic functions.
- Provides a dedicated management point for compatible motor circuits.
- Connects motor-specific information with PLC-based machine control.
- Supports centralized monitoring of motor operating conditions.
- Works with associated TeSys switching and protection equipment.
- Suitable for automated machinery and process equipment with managed motor loads.
Technical FAQs
How does the LTMR08MFM fit into a motor starter circuit?
The LTMR08MFM operates within the motor-management section of the starter architecture and works with associated switching equipment. The complete arrangement should be evaluated as a combination of controller, contactor or starter, protection, motor, and automation-system interfaces.
What should be considered when matching the controller to a motor application?
The motor’s electrical characteristics, required protection functions, control method, switching arrangement, and communication requirements should all be considered. The controller should be selected according to the complete TeSys T application rather than by physical compatibility alone.
What can cause a motor to remain stopped even though the PLC issues a start command?
Possible causes include an active protection condition, an incorrect controller configuration, a contactor or starter problem, control-wiring issues, or an unmet operating permissive. Controller diagnostics should be checked before replacing the motor controller.
Why should the LTMR08MFM and contactor be tested together after maintenance?
The controller and switching device form part of the same motor-control path. Testing them together confirms that the control command reaches the switching circuit, the motor circuit responds correctly, and configured protection or fault handling operates as intended.