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1. Product Overview
The Schneider Electric TM5SPS1 Power Distribution Module is a power supply distribution component designed for the Modicon TM5 modular I/O system. Its primary function is to supply the 24 V DC I/O power segment used by compatible input/output modules and connected field devices.
In industrial automation systems, stable and correctly distributed power is essential for reliable operation. Sensors, actuators, digital I/O modules, and other field components depend on a suitable DC supply to exchange signals and perform their assigned functions. The TM5SPS1 helps establish a dedicated 24 V DC I/O power segment within a compatible TM5 configuration.
The module supports a maximum current of 10 A for the 24 V DC I/O power segment. It requires an external 24 V DC power supply and external fuse protection. Unlike power distribution modules that also generate the TM5 5 V DC power bus, the TM5SPS1 supplies the I/O power segment and does not generate the TM5 power bus.
The TM5SPS1 is designed for compatible Modicon M258 logic controllers and LMC058 motion controllers, subject to the system configuration. It is suitable for applications such as packaging machinery, material handling, automated assembly equipment, and general machine control.
The supplied product information lists dimensions of 99 × 12.5 × 75 mm and a weight of 0.025 kg. Published product specifications commonly list the module weight as approximately 0.03 kg, so the exact value should be confirmed against the specific unit or datasheet when weight is important for inventory records.
2. Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Schneider Electric |
| Model Number | TM5SPS1 |
| Product Type | Power Distribution Module |
| Product Range | Modicon TM5 |
| Main Function | Supplies the 24 V DC I/O power segment |
| Rated Supply Voltage | 24 V DC |
| Permitted Supply Range | 20.4–28.8 V DC |
| Maximum I/O Power Segment Current | 10 A |
| 24 V DC I/O Segment Current Consumption | 25 mA |
| TM5 5 V DC Power Bus Current Consumption | 40 mA |
| TM5 Power Bus Generation | No |
| Maximum Power Dissipation | 0.8 W |
| Short-Circuit Protection | External Type T slow-blow fuse, maximum 10 A, 250 V |
| Reverse Polarity Protection | No |
| Protection Rating | IP20 |
| Compatible Controller Families | Modicon M258 and LMC058, subject to configuration |
| Associated Bus Base | TM5ACBM01R or TM5ACBM05R, according to configuration |
| Associated Terminal Block | TM5ACTB12PS |
| Dimensions | 99 × 12.5 × 75 mm, as supplied |
| Weight | 0.025 kg, as supplied; published specification commonly lists approximately 0.03 kg |
| Typical Applications | 24 V DC I/O power distribution, PLC systems, machine automation |
Important: The TM5SPS1 is a power distribution module, not a standalone AC/DC power supply. It requires a suitable external isolated 24 V DC supply and correctly designed fuse protection. It also does not replace a module that is specifically designed to generate the TM5 5 V DC power bus.
3. Function and Working Principle
The TM5SPS1 provides the 24 V DC power segment required by compatible I/O modules and field devices in the Modicon TM5 system. Its function is primarily electrical rather than logical: it distributes power rather than processing sensor signals or executing control instructions.
3.1 Supplying the 24 V DC I/O Power Segment
The module receives 24 V DC from an external power source and supplies the designated I/O power segment within the compatible TM5 assembly.
The permitted input range is 20.4–28.8 V DC. Maintaining the supply within this range helps prevent undervoltage conditions and unintended equipment operation.
The external supply must have sufficient capacity for the total connected load. When calculating system demand, include the current requirements of all modules and field devices powered by the segment.
3.2 Supporting a Distributed I/O Configuration
A modular automation system may contain multiple input and output modules connected through a common architecture. The TM5SPS1 helps provide the power required by the applicable 24 V DC I/O segment.
This arrangement can simplify power distribution in control cabinets and modular machine designs. However, the number and types of modules supported by a segment must be determined from the complete TM5 system design, not from the module’s current rating alone.
3.3 External Fuse Protection
The TM5SPS1 uses an external Type T slow-blow fuse rated at a maximum of 10 A and 250 V for short-circuit protection of the designated I/O power segment.
The fuse must be selected and installed according to the system wiring instructions and applicable electrical standards. A fuse with an unsuitable rating may fail to protect the circuit adequately.
The fuse does not eliminate the need for correctly sized conductors, suitable power supplies, and appropriate protective measures for individual loads.
3.4 Separation of I/O Power and TM5 Power Bus Functions
The TM5SPS1 supplies the 24 V DC I/O power segment but does not generate the TM5 5 V DC power bus.
This distinction matters when designing or troubleshooting a TM5 assembly. If a configuration requires an additional module to generate the TM5 power bus, the appropriate power distribution module must be selected according to the system requirements.
3.5 Status Indication and Diagnostics
The module provides status LEDs that help technicians assess its operating condition.
The green status indicator can show whether the module is operating, initializing, or in a reset-related state. The red error indicator can signal conditions such as insufficient I/O supply voltage, insufficient TM5 power bus voltage, or a firmware-related issue.
Always interpret LED patterns using the correct module documentation and controller diagnostics rather than relying on color alone.
4. Role in Industrial Automation Systems
Stable I/O Power Distribution
The TM5SPS1 supplies the 24 V DC power segment used by compatible I/O components. A properly designed power segment helps maintain reliable sensor detection, actuator operation, and module communication.
Modular System Design
The module supports the modular architecture of the Modicon TM5 platform. It allows the I/O power arrangement to be planned around the connected modules and the electrical demands of the application.
Improved Panel Organization
Using a dedicated power distribution module can make the power architecture easier to identify during installation, commissioning, and maintenance.
Fault Investigation
The module’s status indicators and the controller’s diagnostic information help maintenance personnel investigate power-related problems. This is particularly useful when several connected I/O devices fail at the same time.
Support for Machine Expansion
When additional I/O devices are introduced, the existing power segment must be reviewed for current capacity and wiring suitability. The TM5SPS1 can form part of a compatible design when its electrical ratings and system limitations are respected.
5. Industrial Applications
5.1 PLC Control Cabinets
PLC control cabinets often contain digital input modules, output modules, and field devices that require 24 V DC power. The TM5SPS1 supplies the relevant I/O power segment within compatible Modicon TM5 configurations.
5.2 Packaging Machinery
Packaging systems use sensors, switches, and actuators to detect products and coordinate machine operations. The TM5SPS1 can supply the I/O power segment for compatible modules used in these applications.
5.3 Material Handling Equipment
Conveyors, transfer stations, and automated handling systems may contain multiple sensors and output devices. A properly configured TM5 power segment supports their electrical requirements.
5.4 Automated Assembly Lines
Assembly equipment frequently uses distributed I/O modules to monitor component positions and control machine sequences. The TM5SPS1 can supply the 24 V DC I/O power segment in a compatible system.
5.5 Industrial Inspection Equipment
Inspection and testing machines may combine sensors, switches, and control devices that require a common DC power architecture. The module can support the I/O power arrangement when the total load remains within the permitted ratings.
5.6 General Machine Automation
The TM5SPS1 is appropriate for applications requiring 24 V DC I/O power distribution in a supported Modicon TM5 system. The final selection depends on the number of connected devices, current demand, controller configuration, and system power architecture.
6. Installation and System Integration
Correct installation is essential because a power distribution fault can affect several connected modules and field devices.
6.1 Verify System Compatibility
Before installation, confirm that the TM5SPS1 is supported by the selected controller, firmware, engineering software, and TM5 configuration.
The module is associated with Modicon M258 logic controllers and LMC058 motion controllers. Check the full system documentation to confirm the required hardware combination.
6.2 Select the Correct Bus Base and Terminal Block
The TM5SPS1 is associated with the TM5ACBM01R or TM5ACBM05R bus base and the TM5ACTB12PS terminal block, depending on the configuration.
Verify the exact assembly requirements before installation. Do not assume that the bus base and terminal block used with another TM5 module are interchangeable.
6.3 Use a Suitable External Power Supply
Provide an external isolated 24 V DC supply suitable for the connected I/O power segment.
The supply voltage must remain within 20.4–28.8 V DC, and the supply capacity must accommodate the total load. Use an appropriate protective arrangement and follow the system’s grounding and functional-earth recommendations.
The module must not be connected directly to AC mains voltage.
6.4 Install the External Fuse
Install the specified external Type T slow-blow fuse, rated at a maximum of 10 A and 250 V, according to the documented wiring arrangement.
The fuse should be accessible for inspection and replacement. Never bypass the fuse or replace it with a higher-rated device to prevent repeated operation.
6.5 Check Wiring and Polarity
The TM5SPS1 does not provide reverse-polarity protection. Incorrect polarity can damage equipment or cause system malfunction.
Before energizing the installation:
- Verify positive and negative DC connections.
- Check terminal assignments against the correct wiring diagram.
- Confirm conductor sizing and terminal tightness.
- Inspect cables for damage.
- Verify that the 0 V DC and functional-earth arrangement follows the system instructions.
6.6 Configure the TM5 Assembly
Install the module in the correct position within the TM5 assembly. Check that the bus base, electronic module, terminal block, and adjacent components are correctly seated.
Ensure that the physical hardware arrangement matches the configured system.
6.7 Commission the Power Segment
After wiring and inspection, energize the external supply and check the module’s status indicators.
Measure the 24 V DC supply at an appropriate test point under load. Confirm that the voltage remains within the specified range and that connected I/O devices operate normally.
Review controller diagnostics for power-related warnings or module errors. Document the supply voltage, fuse rating, and final wiring arrangement for future maintenance.
7. Troubleshooting Common Problems
Problem 1: The I/O Power Segment Has No Voltage
Possible causes:
- The external 24 V DC supply is disconnected.
- The supply is faulty.
- The external fuse is open.
- Wiring polarity or terminal connections are incorrect.
- The power segment is short-circuited.
Recommended checks:
- Isolate the circuit and inspect the external supply and wiring.
- Check the fuse using the appropriate safe procedure.
- Verify polarity and terminal connections.
- Inspect downstream circuits for short circuits.
- Restore power only after the cause has been identified and corrected.
Problem 2: The Red Error LED Flashes
Possible causes:
- The 24 V DC I/O power segment voltage is too low.
- The TM5 power bus voltage is too low.
- The module has detected a firmware or configuration problem.
Recommended checks:
- Record the exact LED pattern.
- Measure the external 24 V DC supply under load.
- Check the TM5 system power arrangement.
- Review controller diagnostics.
- Verify the module and firmware compatibility.
Use the documented LED status table to identify the exact condition before replacing the module.
Problem 3: The External Fuse Opens Repeatedly
Possible causes:
- A short circuit in the I/O power segment.
- Excessive connected load.
- Damaged field wiring.
- An incorrect fuse type or rating.
- A faulty connected device.
Recommended checks:
- Disconnect power safely.
- Inspect the distribution wiring and connected devices.
- Calculate the expected total current.
- Confirm that the fuse matches the specified rating and type.
- Reconnect circuits systematically after correcting the fault.
Never bypass the fuse or increase its rating without an approved redesign of the circuit.
Problem 4: The Supply Voltage Drops Under Load
Possible causes:
- The external supply is undersized.
- Excessive current demand.
- Loose terminals or high-resistance connections.
- Undersized conductors.
- A failing power supply.
Recommended checks:
- Measure voltage at the supply and at the I/O power segment under normal load.
- Check the total current demand.
- Inspect terminals and connectors.
- Verify cable sizing and length.
- Confirm that the power supply is rated for the actual load.
Problem 5: Several I/O Modules Stop Operating
Possible causes:
- Loss of the shared I/O power segment.
- An open external fuse.
- A common wiring fault.
- A power supply failure.
- A system configuration or assembly issue.
Recommended checks:
- Determine whether all affected modules share the same power segment.
- Check the TM5SPS1 status indicators.
- Verify the 24 V DC supply and fuse.
- Inspect the bus base and terminal block.
- Review controller diagnostics before replacing individual I/O modules.
Problem 6: The Module Does Not Operate After Replacement
Possible causes:
- An incompatible replacement module.
- Incorrect bus base or terminal block.
- Incorrect supply polarity.
- A missing external fuse.
- A controller or firmware compatibility issue.
Recommended checks:
- Verify the full model number.
- Confirm the associated bus base and terminal block.
- Check power wiring and fuse installation.
- Verify the controller configuration.
- Inspect the system for underlying wiring or supply faults.
8. Compatible System Components
| Component | Model or Category | Function |
|---|---|---|
| Power distribution module | TM5SPS1 | Supplies the 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 | Provides the I/O segment supply |
| External fuse | Type T slow-blow, maximum 10 A, 250 V | Protects the designated power circuit |
| Digital input modules | Compatible Modicon TM5 modules | Acquire field sensor signals |
| Digital output modules | Compatible Modicon TM5 modules | Control supported field devices |
Compatibility should be confirmed for the complete assembly. In particular, the power distribution module, bus base, terminal block, external supply, and controller configuration must match the intended application.
9. Replacement and Alternative Selection
When selecting a replacement for the TM5SPS1, confirm that the alternative supplies the required 24 V DC I/O power segment and matches the system’s electrical and mechanical configuration.
| Selection Factor | What to Verify |
|---|---|
| Primary function | 24 V DC I/O power distribution |
| Rated input voltage | 24 V DC |
| Permitted input range | 20.4–28.8 V DC |
| Maximum output current | 10 A for the I/O power segment |
| Fuse protection | External Type T slow-blow fuse, maximum 10 A, 250 V |
| Power bus generation | Confirm whether the application requires a separate TM5 power bus generator |
| Bus base | Correct compatible bus-base model |
| Terminal block | Correct compatible terminal-block model |
| Controller support | Compatibility with the installed Modicon system |
| Dimensions | Verify physical fit against the actual replacement |
| Weight | Confirm the exact value from the selected product’s documentation |
The TM5SPS1 should not automatically be replaced with a TM5SPS2 or another power distribution module. Different models may provide additional power bus functionality or have different current ratings and wiring requirements. Choose the replacement according to the complete power architecture.
10. Key Advantages
Dedicated 24 V DC I/O Power Distribution
The module supplies the power segment required by compatible TM5 I/O components and field devices.
Up to 10 A Segment Capacity
Its specified maximum current of 10 A supports suitable I/O power arrangements when the external supply, wiring, fuse, and connected loads are correctly designed.
Modular System Integration
The TM5SPS1 is designed for the Modicon TM5 platform, supporting structured system layouts in compatible PLC and motion-control applications.
Clear Status Indication
The module’s status LEDs assist technicians in identifying operating states and investigating power-related issues.
Straightforward Maintenance
The dedicated power distribution function makes it easier to identify the relevant supply path when troubleshooting shared I/O power problems.
Suitable for Industrial Machine Control
The module can support packaging, material handling, assembly, and other industrial automation applications requiring 24 V DC I/O power distribution.
11. Technical FAQs
Q1: What is the Schneider TM5SPS1 used for?
The TM5SPS1 is a Modicon TM5 power distribution module designed to supply the 24 V DC I/O power segment.
Q2: What is its maximum current capacity?
The maximum current provided on the 24 V DC I/O power segment is 10 A, subject to the power supply, fuse, wiring, and system design requirements.
Q3: Does the TM5SPS1 generate the TM5 5 V DC power bus?
No. The TM5SPS1 supplies the 24 V DC I/O power segment but does not generate the TM5 power bus. If the system requires additional power bus generation, select a suitable module designed for that function.
Q4: What external fuse is required?
The specified protection is an external Type T slow-blow fuse rated at a maximum of 10 A and 250 V. Follow the system wiring instructions and applicable electrical standards.
Q5: Does the module have reverse-polarity protection?
No. Correct polarity must be verified before power is applied.
Q6: Which controllers are compatible?
The module is associated with Modicon M258 logic controllers and LMC058 motion controllers. Confirm the exact controller, firmware, and system configuration before installation.
Q7: What are the dimensions and weight?
The supplied dimensions are 99 × 12.5 × 75 mm, with a supplied weight of 0.025 kg. Published specifications commonly list a weight of approximately 0.03 kg, so confirm the value for the specific unit when required.
Q8: Why does the module show a power-related error?
Possible causes include low 24 V DC supply voltage, low TM5 power bus voltage, or a firmware-related condition. Check the LED pattern and controller diagnostics to identify the specific issue.
Q9: Can the module be connected directly to AC mains?
No. The module requires a suitable external isolated 24 V DC supply. Direct connection to AC mains is unsafe and can damage the equipment.
Q10: What should be checked before replacement?
Verify the exact model, controller compatibility, bus base, terminal block, power supply, fuse rating, wiring polarity, and whether the application requires a separate TM5 power bus generator.
12. Conclusion
The Schneider Electric TM5SPS1 Power Distribution Module is an important power-management component for compatible Modicon TM5 automation systems. It supplies the 24 V DC I/O power segment, supports a maximum current of 10 A, and provides status indication to assist with installation and maintenance.
For automation engineers, system integrators, and industrial spare-parts buyers, correct selection depends on more than the model number and physical dimensions. The external power supply, fuse protection, wiring polarity, bus base, terminal block, and overall power architecture must all be verified.
When installed according to the system requirements, the TM5SPS1 can provide a structured and maintainable 24 V DC I/O power arrangement for PLC control cabinets, packaging equipment, material handling systems, and other industrial automation applications.