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- Power Distribution Module
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- 99 × 12.5 × 75 mm
- 0.03 kg
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1. Product Overview
The Schneider Electric TM5SPS2 Power Distribution Module is a power management component in the Modicon TM5 modular automation system. It is designed to supply both the 24 V DC I/O power segment and the TM5 power bus, making it an important component in modular PLC and motion-control installations.
Unlike the TM5SPS1, which supplies the 24 V DC I/O power segment only, the TM5SPS2 also generates power for the TM5 bus. This additional capability helps support compatible I/O modules within a distributed automation configuration.
The module supports a maximum current of 10 A for the 24 V DC I/O power segment. Its TM5 power bus can provide up to 1,136 mA under specified operating conditions, with the available current reduced to 740 mA at higher operating temperatures. These ratings must be considered when designing the power architecture and selecting compatible modules.
The TM5SPS2 is suitable for industrial applications that require modular I/O expansion, including packaging machinery, material handling equipment, automated assembly systems, and general machine control. It is compatible with supported Modicon M258 logic controllers and LMC058 motion controllers.
With a compact form factor of 99 × 12.5 × 75 mm and a weight of 0.03 kg, the module is designed for installation in compatible Modicon TM5 assemblies.
2. Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Schneider Electric |
| Model Number | TM5SPS2 |
| Product Type | Power Distribution Module |
| Product Range | Modicon TM5 |
| Main Function | Supplies 24 V DC I/O power and the TM5 power bus |
| Rated Supply Voltage | 24 V DC |
| Supply Voltage Range | 20.4–28.8 V DC |
| Maximum I/O Power Segment Current | 10 A |
| TM5 Power Bus Current Generated | 1,136 mA at −10 to 55°C |
| TM5 Power Bus Current at Higher Temperatures | 740 mA at 55 to 60°C |
| Maximum TM5 Power Bus Input Current | 0.7 A at 24 V DC |
| Typical 24 V DC I/O Segment Current Consumption | 25 mA |
| Maximum Power Dissipation | 1.91 W |
| TM5 Power Bus Fuse | Integrated, not exchangeable |
| I/O Power Segment Short-Circuit Protection | External Type T slow-blow fuse, maximum 10 A, 250 V |
| Reverse Polarity Protection | Yes, for the TM5 power bus supply; no for the 24 V DC I/O power segment |
| Protection Rating | IP20 |
| Compatible Controller Families | Modicon M258 and LMC058, subject to configuration |
| Associated Bus Base | TM5ACBM01R or TM5ACBM05R |
| Associated Terminal Block | TM5ACTB12PS |
| Dimensions | 99 × 12.5 × 75 mm |
| Weight | 0.03 kg |
| Typical Applications | PLC systems, distributed I/O, machine automation, power bus management |
The TM5SPS2 has two distinct power functions. Its TM5 power bus supply and 24 V DC I/O power segment must be wired and protected according to their respective requirements. The module must not be connected directly to AC mains voltage.
3. Function and Working Principle
The TM5SPS2 combines two power-related functions in one module: supplying the TM5 power bus and distributing power to the 24 V DC I/O segment.
3.1 Supplying the TM5 Power Bus
The module generates power for the TM5 bus used by compatible modules in the system. Under the specified operating conditions, the maximum generated current is 1,136 mA at temperatures up to 55°C.
At temperatures between 55°C and 60°C, the available TM5 power bus current is reduced to 740 mA. This temperature derating must be considered when calculating the power requirements of the complete module assembly.
The total current demand of the connected TM5 modules must remain within the permitted capacity. If the bus becomes overloaded, the system may report a diagnostic condition or display a red status indicator.
3.2 Distributing 24 V DC I/O Power
The TM5SPS2 also supplies the 24 V DC I/O power segment, with a maximum current capacity of 10 A.
This segment supplies compatible I/O circuits and field devices according to the system architecture. The external power supply must be sized to support the total connected load while maintaining the voltage within the specified 20.4–28.8 V DC range.
The maximum current rating applies to the power segment as a whole. It should not be interpreted as a separate 10 A allowance for each connected module or terminal.
3.3 Integrated and External Protection
The TM5 power bus uses an integrated fuse that cannot be exchanged by the user. The 24 V DC I/O power segment requires an external Type T slow-blow fuse rated at a maximum of 10 A and 250 V.
These protection arrangements serve different parts of the power architecture. The external fuse must be correctly selected and installed, and a fault affecting the I/O segment should be investigated before the circuit is energized again.
The TM5SPS2 provides reverse-polarity protection for the TM5 power bus supply, but the 24 V DC I/O power segment does not have reverse-polarity protection. Correct polarity is therefore essential for the I/O power connections.
3.4 Status Monitoring
The module has status indicators that assist with installation, commissioning, and fault diagnosis.
The green indicator reports operating states, including reset, preoperational, and RUN states. A red error indicator can signal conditions such as an overloaded TM5 power bus, low I/O supply voltage, or insufficient TM5 power bus input voltage.
A separate red indicator can identify an overloaded TM5 power bus. The exact LED pattern should always be interpreted using the appropriate module documentation and controller diagnostics.
4. Role in Industrial Automation Systems
Dual Power Function
The TM5SPS2 provides both the 24 V DC I/O power segment and the TM5 power bus supply. This makes it different from power distribution modules that supply only the I/O power segment.
Modular I/O Expansion
The module supports the power architecture required by compatible Modicon TM5 configurations. Correct power planning allows integrators to add supported I/O components without exceeding the electrical limits of the system.
Improved Power Architecture
Separate power connections for the TM5 bus and the 24 V DC I/O segment help system designers organize the electrical supply for control electronics and field-device circuits.
Fault Diagnosis
The status indicators and controller diagnostics provide information that can help maintenance personnel investigate power-related faults, overloads, and configuration issues.
Support for Machine Control
The module helps maintain the power infrastructure needed by compatible PLC and motion-control applications. It does not execute machine logic itself; control decisions are performed by the controller and the application program.
5. Industrial Applications
5.1 PLC Control Cabinets
Industrial PLC cabinets often contain multiple I/O modules and field-device connections. The TM5SPS2 can supply the TM5 power bus and the 24 V DC I/O power segment within a compatible system.
5.2 Packaging Machinery
Packaging machines use distributed sensors, actuators, and control modules to coordinate product handling and machine sequences. The TM5SPS2 can support the power architecture of compatible Modicon TM5 installations.
5.3 Material Handling Equipment
Conveyors, transfer systems, and automated handling machines often use multiple I/O modules. The TM5SPS2 helps provide the required bus and I/O power when the connected equipment remains within the module’s electrical limits.
5.4 Automated Assembly Lines
Assembly equipment may require multiple digital and analog I/O modules for position detection, actuator control, and process monitoring. The TM5SPS2 supports the power requirements of compatible modular I/O arrangements.
5.5 Motion-Control Systems
In supported motion-control installations, the module can form part of a TM5 configuration used alongside compatible controllers and I/O components. System designers must verify bus current demand, temperature derating, and power-segment capacity.
5.6 Distributed Industrial Automation
The module is suitable for compatible distributed I/O arrangements where both TM5 bus power and 24 V DC I/O power are required. The complete configuration must comply with the controller and system installation requirements.
6. Installation and System Integration
Correct installation is essential because a power-related fault can affect multiple modules and field devices.
6.1 Verify Hardware Compatibility
Before installation, confirm that the TM5SPS2 is supported by the controller, firmware, engineering software, and overall TM5 system configuration.
The module is associated with Modicon M258 logic controllers and LMC058 motion controllers. Verify the exact hardware combination before purchasing a replacement or expanding an existing installation.
6.2 Select the Correct Bus Base and Terminal Block
The TM5SPS2 is associated with the TM5ACBM01R or TM5ACBM05R bus base and the TM5ACTB12PS terminal block.
Confirm the exact component combination and assembly requirements before installation. Do not assume that the bus base and terminal block used by another TM5 power module are interchangeable.
6.3 Prepare the External Power Supplies
The module uses a 24 V DC supply architecture. The TM5 power bus supply and the 24 V DC I/O power segment must be wired according to the module’s connection diagram.
Use appropriate isolated PELV power supplies and follow the applicable system wiring instructions. Do not connect the module directly to AC mains.
6.4 Install the External Fuse
Install the specified Type T slow-blow fuse, rated at a maximum of 10 A and 250 V, for the 24 V DC I/O power segment.
The TM5 power bus has an integrated, non-exchangeable fuse. Do not attempt to replace or bypass that internal protection.
6.5 Check Polarity and Grounding
Before energizing the module, verify the polarity of both power circuits. The TM5 power bus supply has reverse-polarity protection, but the 24 V DC I/O power segment does not.
Follow the system’s grounding instructions, including the recommended connection of the 0 V DC power circuits to functional earth where required for electromagnetic compatibility.
6.6 Calculate the Power Requirements
Before adding I/O modules, calculate the expected current consumption of the TM5 power bus and the 24 V DC I/O power segment separately.
The TM5 power bus provides up to 1,136 mA under normal specified temperature conditions, with reduced capacity at higher temperatures. The 24 V DC I/O power segment supports up to 10 A.
Do not exceed either rating. Consider the current demand of every connected module and field device, as well as any applicable temperature derating.
6.7 Configure and Commission the System
After wiring and assembly:
- Verify the module’s position and mechanical connections.
- Check both power supplies and their voltage levels.
- Confirm that the external fuse is correctly installed.
- Energize the system according to the approved commissioning procedure.
- Check the green and red status indicators.
- Review the controller diagnostics and module status.
- Verify that connected I/O modules and field devices operate correctly.
- Record the power supply configuration and measured voltage values.
7. Troubleshooting Common Problems
Problem 1: The TM5 Power Bus Is Overloaded
Possible causes:
- Excessive current demand from connected TM5 modules.
- Incorrect power calculations.
- Temperature-related current derating.
- An unsuitable system configuration.
Recommended checks:
- Review the current requirements of all connected modules.
- Compare the total demand with the 1,136 mA capacity.
- If the operating temperature exceeds 55°C, use the reduced 740 mA rating.
- Check the module’s status indicators and controller diagnostics.
- Redesign or redistribute the load if the permitted capacity is exceeded.
Problem 2: The 24 V DC I/O Power Segment Has Low Voltage
Possible causes:
- An undersized or faulty external power supply.
- Excessive load current.
- A loose terminal connection.
- An open external fuse.
- Damaged wiring or a short circuit.
Recommended checks:
- Measure the external supply voltage.
- Measure the voltage at the I/O power segment under load.
- Inspect the fuse and wiring.
- Calculate the total load current.
- Correct the fault before restoring normal operation.
Problem 3: The Red Error Indicator Flashes
Possible causes:
- TM5 power bus overload.
- Insufficient 24 V DC I/O supply voltage.
- Insufficient input voltage for the TM5 power bus.
- An invalid firmware condition.
Recommended checks:
- Record the exact LED pattern.
- Check both power supplies.
- Review the TM5 bus current demand.
- Consult controller diagnostics.
- Verify firmware and hardware compatibility.
Problem 4: The TM5 Power Bus Indicator Is Red
Possible cause:
The TM5 power bus may be overloaded.
Recommended checks:
- Review the current consumption of the connected modules.
- Check the ambient temperature and any applicable derating.
- Confirm that the module count and power architecture are supported.
- Correct the overload before returning the system to service.
Problem 5: The Module Does Not Start Normally
Possible causes:
- Missing or incorrect power connections.
- Incorrect polarity on the I/O power segment.
- An unsupported system configuration.
- A firmware or assembly problem.
Recommended checks:
- Isolate power before inspecting wiring.
- Verify supply voltage and polarity.
- Check the bus base and terminal block.
- Review the controller configuration.
- Follow the documented startup and diagnostic procedure.
Problem 6: The External Fuse Opens Repeatedly
Possible causes:
- A short circuit on the I/O power segment.
- Excessive connected load.
- Damaged field wiring.
- A faulty connected device.
- An incorrectly specified fuse.
Recommended checks:
- Disconnect power safely.
- Inspect downstream wiring and devices.
- Calculate the actual current demand.
- Confirm the correct fuse rating.
- Restore power only after correcting the underlying fault.
Never bypass the fuse or install a higher-rated fuse as a workaround.
8. Compatible System Components
| Component | Model or Category | Function |
|---|---|---|
| Power distribution module | TM5SPS2 | Supplies the TM5 power bus and 24 V DC I/O power segment |
| Bus base | TM5ACBM01R | Associated TM5 bus-base configuration |
| Bus base with address setting | TM5ACBM05R | Alternative associated bus-base configuration |
| Terminal block | TM5ACTB12PS | Provides the corresponding terminal connection arrangement |
| Logic controller | Modicon M258 | Compatible controller family, subject to configuration |
| Motion controller | Modicon LMC058 | Compatible controller family, subject to configuration |
| External power supply | Isolated 24 V DC supply | Supplies the relevant power circuit |
| External fuse | Type T slow-blow, maximum 10 A, 250 V | Protects the 24 V DC I/O power segment |
| Digital I/O modules | Compatible Modicon TM5 modules | Acquire sensor signals and control field devices |
| Analog I/O modules | Compatible Modicon TM5 modules | Process analog signals in supported configurations |
Confirm compatibility for the complete assembly, including the controller, firmware, bus base, terminal block, power supplies, and connected modules.
9. Replacement and Alternative Selection
When replacing the TM5SPS2, check both of its power functions. A replacement that supplies only the 24 V DC I/O power segment may not provide the TM5 power bus generation required by the existing system.
| Selection Factor | What to Verify |
|---|---|
| Main function | Supplies both the TM5 power bus and 24 V DC I/O segment |
| Rated supply voltage | 24 V DC |
| Supply voltage range | 20.4–28.8 V DC |
| Maximum I/O segment current | 10 A |
| TM5 power bus current | 1,136 mA under specified conditions |
| Temperature derating | 740 mA at 55–60°C |
| Fuse arrangement | Integrated non-exchangeable TM5 bus fuse and external I/O segment fuse |
| Reverse-polarity protection | Present for TM5 bus supply; absent for I/O power segment |
| Bus base | Compatible TM5ACBM01R or TM5ACBM05R |
| Terminal block | Compatible TM5ACTB12PS |
| Dimensions | 99 × 12.5 × 75 mm |
| Weight | 0.03 kg |
The TM5SPS1 supplies the 24 V DC I/O power segment but does not generate the TM5 power bus. Therefore, it should not be considered a direct replacement for the TM5SPS2 unless the overall system has been redesigned to provide the missing bus power function separately.
Other TM5 power distribution modules may have different current ratings, fuse arrangements, or temperature limits. Verify all electrical and mechanical requirements before substituting a different model.
10. Key Advantages
Dual Power Distribution Function
The TM5SPS2 supplies both the 24 V DC I/O power segment and the TM5 power bus, supporting the electrical requirements of compatible modular automation systems.
Up to 10 A I/O Power Capacity
The module supports up to 10 A on the 24 V DC I/O power segment when the external power supply, fuse, wiring, and connected load are correctly designed.
Dedicated TM5 Bus Power
The module can generate up to 1,136 mA for the TM5 power bus under specified temperature conditions, supporting compatible I/O modules within the permitted load.
Integrated Bus Protection
The TM5 power bus uses an integrated fuse, while the I/O power segment uses external fuse protection. Correct installation and troubleshooting procedures are essential for safe operation.
Compact Modular Construction
Its 99 × 12.5 × 75 mm dimensions and 0.03 kg weight support installation in compatible TM5 assemblies and industrial control cabinets.
Useful for Industrial Machine Control
The module supports the power architecture required by compatible PLC systems, packaging machinery, material handling equipment, and motion-control applications.
11. Technical FAQs
Q1: What is the Schneider TM5SPS2 used for?
The TM5SPS2 is a Modicon TM5 power distribution module that supplies both the 24 V DC I/O power segment and the TM5 power bus.
Q2: What is the maximum I/O power segment current?
The maximum current provided on the 24 V DC I/O power segment is 10 A.
Q3: How much current can the TM5 power bus provide?
The module provides up to 1,136 mA at temperatures from −10°C to 55°C. At 55–60°C, the current capacity is reduced to 740 mA.
Q4: What is the difference between TM5SPS1 and TM5SPS2?
The TM5SPS1 supplies the 24 V DC I/O power segment only. The TM5SPS2 supplies both the I/O power segment and the TM5 power bus.
Q5: Does the TM5SPS2 require an external fuse?
Yes. The 24 V DC I/O power segment requires an external Type T slow-blow fuse rated at a maximum of 10 A and 250 V. The TM5 power bus has an integrated fuse that cannot be exchanged.
Q6: Which controllers are compatible?
The module is associated with Modicon M258 logic controllers and LMC058 motion controllers. Confirm the exact controller and system configuration before installation.
Q7: What are the dimensions and weight?
The module measures 99 × 12.5 × 75 mm and weighs 0.03 kg.
Q8: Can the TM5SPS2 replace the TM5SPS1?
The TM5SPS2 provides the 24 V DC I/O power function and also generates TM5 power bus current. However, replacement suitability depends on the system’s power architecture, bus base, terminal block, wiring, and configuration.
Q9: Why does the module report a bus overload?
The connected modules may require more current than the available TM5 power bus capacity. Check the total current demand, operating temperature, and any applicable derating requirements.
Q10: Can the module be connected directly to AC mains?
No. Use suitable isolated 24 V DC power supplies and follow the documented wiring requirements. Direct connection to AC mains can cause severe equipment damage and create a serious safety hazard.
12. Conclusion
The Schneider Electric TM5SPS2 Power Distribution Module is a dual-function power component for compatible Modicon TM5 automation systems. It supplies the 24 V DC I/O power segment with a maximum current of 10 A and generates TM5 power bus current for compatible modules.
Its ability to support both power functions makes it an important consideration when designing, expanding, or maintaining modular PLC and motion-control systems. Correct selection requires attention to power supply capacity, current demand, temperature derating, fuse protection, polarity, and hardware compatibility.
For industrial automation engineers, maintenance teams, and spare-parts buyers, verifying the exact model and the complete power architecture before installation helps reduce commissioning problems and supports reliable operation.