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- TM5SPS3
- Power Distribution Module
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- 49.4 × 25 × 99 mm
- 0.025 kg
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Product Overview
The Schneider Electric TM5SPS3 Modicon TM5 Power Distribution Module is used in compatible Modicon TM5 automation systems to distribute power to the fieldbus interface electronics, TM5 expansion bus, and I/O power segment. It is particularly relevant to modular control assemblies where the communication interface, expansion modules, and field devices have separate power requirements.
The module handles two distinct power paths. The main supply circuit powers the fieldbus interface electronics and generates the TM5 bus supply for compatible expansion modules. The separate 24 V DC I/O power segment supplies the relevant I/O circuits and connected field devices. Keeping these functions distinct makes it easier to calculate current demand and identify which part of the system is affected when a supply fault occurs.
For example, a machine-control panel may use TM5 expansion modules to acquire sensor signals and operate field devices across a production station. The TM5SPS3 provides the associated power distribution, while the controller executes the application logic and the fieldbus interface handles network communication. Its suitability depends on the controller and interface configuration, the required bus current, and the electrical demand of the connected equipment.
When selecting or replacing this module, the complete TM5 assembly should be considered, including the controller family, fieldbus interface, bus base, expansion modules, external 24 V DC supplies, and protective devices.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | TM5SPS3 |
| Product Family | Modicon TM5 |
| Product Type | Interface Power Distribution Module (IPDM) |
| Primary Function | Power distribution for the TM5 bus and I/O power segment |
| Rated Supply Voltage | 24 V DC |
| Main Supply Range | 20.4–28.8 V DC |
| I/O Power Segment Supply Range | 20.4–28.8 V DC |
| TM5 Power Bus Current | 750 mA from −10 to 55°C |
| TM5 Power Bus Current at Elevated Temperature | 500 mA from 55 to 60°C |
| Fieldbus Interface Supply Current | 300 mA |
| Maximum I/O Power Segment Current | 10 A |
| I/O Power Segment Current Draw | 25 mA |
| Maximum Power Dissipation | 1.82 W |
| TM5 Power Bus Reverse-Polarity Protection | Yes |
| I/O Power Segment Reverse-Polarity Protection | No |
| TM5 Power Bus Fuse | Integrated, non-replaceable |
| I/O Power Segment Protection | External fuse required |
| Electrical Isolation | 500 V AC RMS between specified internal power circuits |
| Compatible Controller Families | Modicon M258, LMC058, LMC078 |
| Product Dimensions | 49.4 × 25 × 99 mm |
| Product Weight | 0.025 kg |
Product Features
- Separate power circuits: Distinguishes the main supply and TM5 bus power from the I/O power segment.
- Dedicated TM5 bus supply: Generates the bus power required by compatible TM5 expansion modules.
- 10 A I/O power capacity: Distributes power to the I/O power segment within the specified circuit rating.
- Temperature-dependent bus rating: The available TM5 bus current decreases at higher operating temperatures.
- Integrated bus protection: Includes reverse-polarity protection and a non-replaceable fuse for the TM5 power bus.
- External I/O protection: Requires suitable external overcurrent protection for the I/O power segment.
- Modular integration: Fits into compatible TM5 assemblies using the appropriate bus base and connection hardware.
Working Principle
The TM5SPS3 receives 24 V DC from an external power supply and distributes it through two separate circuits.
Main 24 V DC Supply → Fieldbus Interface Electronics and TM5 Power Bus
Separate 24 V DC Supply → I/O Power Segment → Compatible I/O Circuits and Field Devices
The main circuit supplies the fieldbus interface electronics and generates the TM5 bus supply used by expansion modules. Its available output current must be calculated against the total consumption of the connected modules. At temperatures from 55 to 60°C, the TM5 bus current rating is reduced from 750 mA to 500 mA.
The second circuit supplies the I/O power segment, which can distribute up to 10 A. Its actual load depends on the connected modules and field devices, as well as the capacity of the external supply, wiring, terminals, and protective devices.
These two ratings are independent. An adequate total power-supply rating does not guarantee that the TM5 bus or I/O power segment is within its individual limit. Both circuits must be checked during commissioning and whenever the system is expanded.
Role in a Modicon TM5 Control Architecture
The TM5SPS3 occupies the power-distribution position in a compatible TM5 assembly. It supplies the electrical paths needed by the fieldbus interface and expansion modules, while the controller and communication interface perform the control and network functions.
Controller → Fieldbus Interface → TM5 Assembly → I/O Modules → Field Devices
| System Component | Function |
|---|---|
| TM5SPS3 | Distributes power to the TM5 bus and I/O power segment |
| Modicon Controller | Executes control logic and manages the automation application |
| Fieldbus Interface | Handles communication between the controller system and the relevant network |
| TM5 Bus Base | Provides the required mechanical and electrical module connections |
| TM5 I/O Modules | Acquire input signals or control output devices |
| Common Distribution Module (CDM) | Provides field-side distribution connections in compatible configurations |
| External 24 V DC Supply | Powers the designated main or I/O supply circuit |
| Field Sensors and Actuators | Generate process signals or respond to control outputs |
The actual configuration depends on the controller, communication interface, selected I/O modules, and system power requirements. When adding modules, the TM5 bus load and I/O power segment load must be recalculated separately.
Industrial Applications
| Application | Typical Use |
|---|---|
| Machine Automation | Distributing power within modular I/O assemblies used for machine monitoring and control |
| Packaging Machinery | Supplying compatible expansion modules and field-side devices such as sensors and actuator interfaces |
| Material Handling | Supporting TM5 power distribution in conveyor and transfer equipment control systems |
| Motion-Control Systems | Providing power distribution in compatible Modicon controller and TM5 configurations |
| Process Equipment | Supplying the I/O power segment for connected instrumentation and field devices |
| Automated Assembly Lines | Supporting modular I/O arrangements used to monitor equipment status and control production operations |
| Distributed I/O Stations | Separating bus power requirements from field-side I/O power demand |
| Industrial Machine Upgrades | Extending compatible TM5 assemblies after checking bus loading and I/O power capacity |
The module’s suitability for an application depends on controller compatibility, the selected fieldbus interface, the total power demand, and the operating environment. It does not replace the controller or perform signal processing.
Installation and Maintenance
- Confirm that the TM5SPS3 is compatible with the controller, fieldbus interface, bus base, and expansion modules in the existing assembly.
- Verify that the external supplies provide 24 V DC within the specified operating range.
- Isolate the power supplies and confirm that the circuits are de-energized before installation or wiring changes.
- Install the module in the designated TM5 assembly and check that the bus-base connections are correctly seated.
- Connect the main supply and I/O power segment to their designated terminals, following the applicable wiring diagram.
- Verify polarity on both supply circuits. The I/O power segment does not have reverse-polarity protection.
- Install the required external fuses and confirm that their ratings match the applicable circuit requirements.
- Calculate the total TM5 bus current and apply the appropriate temperature derating. Keep the I/O power segment within its 10 A maximum.
- Inspect the wiring for loose terminals, damaged insulation, incorrect connections, and signs of overheating.
- After energizing the assembly, verify that the fieldbus interface and expansion modules receive power and operate as expected.
- If field devices lose power, check the I/O supply, external fuse, terminal connections, and connected loads.
- If the TM5 bus loses power, review the main supply, bus load, module connections, and applicable protection arrangements before replacing components.
During maintenance, investigate repeated fuse operation instead of simply replacing the fuse. A short circuit, excessive current, incorrect wiring, or a faulty connected device may be responsible. Recalculate both power circuits whenever the system configuration changes.
Related Components
| Component | Function |
|---|---|
| Modicon M258 Controller | Provides control functions in compatible automation configurations |
| Modicon LMC058 Controller | Provides logic and motion-control functions in supported configurations |
| Modicon LMC078 Controller | Provides a controller platform for compatible automation systems |
| TM5 Bus Base | Establishes the mechanical and electrical connection for the TM5 assembly |
| TM5 I/O Modules | Acquire field signals or control connected equipment |
| CANopen Interface Module | Provides the CANopen communication connection in compatible configurations |
| Sercos III Interface Module | Provides the Sercos III communication connection in compatible configurations |
| Common Distribution Module (CDM) | Distributes field-side connections for compatible equipment |
| 24 V DC Power Supply | Supplies the designated main or I/O power circuit |
| External Protective Fuse | Provides overcurrent protection for the applicable supply circuit |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Schneider TM5SPS1 | Modicon TM5 Power Supply Module | Power distribution in compatible TM5 configurations |
| Schneider TM5SPS2 | Modicon TM5 Power Supply Module | Supplying TM5 bus and I/O power circuits in supported assemblies |
| Schneider TM5SPS2F | Modicon TM5 Power Supply Module | Alternative power-distribution arrangement for compatible TM5 systems |
| Schneider TM5SBER2 | Modicon TM5 Bus Receiver Module | Bus reception in supported distributed I/O configurations |
| Schneider TM5NCO1 | Modicon TM5 CANopen Interface Module | CANopen communication in compatible architectures |
| Schneider TM5SAI2L | Modicon TM5 Analog Input Module | Acquiring analog field signals |
| Schneider TM5SAO2L | Modicon TM5 Analog Output Module | Generating analog control signals |
| Schneider Modicon TM5 I/O Modules | Modular I/O Product Family | Expanding compatible machine and process I/O |
Key Advantages
- Separates TM5 bus power from the I/O power segment.
- Provides up to 10 A for the I/O power segment.
- Defines a separate current limit for the TM5 expansion bus.
- Includes integrated fuse and reverse-polarity protection for the TM5 power bus.
- Supports structured power budgeting and fault diagnosis.
- Integrates into compatible Modicon TM5 automation assemblies.
Technical FAQs
What is the difference between the TM5 power bus and the I/O power segment?
The TM5 power bus supplies the required bus power to compatible expansion modules. The separate I/O power segment supplies the relevant I/O circuits and connected field devices. The bus has its own current limit, while the I/O power segment can distribute up to 10 A. The two circuits must be checked independently when calculating system power requirements.
How does operating temperature affect the TM5SPS3?
The TM5 power bus current rating is 750 mA from −10 to 55°C and decreases to 500 mA from 55 to 60°C. If the assembly operates at higher ambient temperatures, the total expansion-module bus consumption must remain within the reduced limit.
Does the TM5SPS3 provide reverse-polarity protection on both circuits?
No. Reverse-polarity protection is provided on the TM5 power bus, but not on the I/O power segment. The polarity of the I/O supply must therefore be checked carefully during installation. External protection must also be selected according to the applicable wiring requirements.
What should be checked if the TM5 modules operate but field devices have no power?
Check the separate I/O power supply, polarity, external fuse, terminal connections, and total field-side load. If the TM5 bus and fieldbus interface remain operational, the problem may be limited to the I/O power path or connected equipment. Isolate the supply before inspecting the wiring, and identify the cause of any blown fuse before restoring power.