TM5SPS3 | Schneider 24V DC Power Distribution Module

Product Overview

Downtime costs money. When a Modicon TM5 rack loses its 24 V DC supply, every I/O point on that segment goes dark, and production stops until someone finds the fault. The Schneider TM5SPS3 power distribution module exists to prevent exactly that scenario. It is a dedicated power distribution module from the Modicon TM5 range, built to feed 24 V DC to TM5 I/O modules and to the CANopen or Sercos III bus in the same architecture.

This is not a generic power supply. It is a bus-level distribution component that sits inside the TM5 system and keeps logic controllers and motion controllers supplied within their rated envelope. For maintenance teams and system integrators, that means fewer external power taps, less cabinet wiring, and a cleaner path to predictable machine uptime.

What the TM5SPS3 Actually Does in Your Cabinet

The module takes a 24 V DC rated supply and distributes it across two distinct paths. The first path feeds the TM5 power bus: 750 mA is available from -10 to 55 °C, and 500 mA from 55 to 60 °C. The second path feeds the I/O power segment with up to 10 A. That split matters commercially. You do not need a separate high-current supply just to drive output loads, and you do not need to derate your whole cabinet design around one shared rail.

Current consumption on the 24 V DC side stays at or below 25 mA. In a plant running dozens of racks, that low overhead adds up to measurable energy savings over a year of continuous operation. The module also carries a maximum power dissipation of 1.91 W, which keeps heat load inside the enclosure low and reduces the burden on cabinet cooling.

Short-circuit protection comes from an external 10 A fuse. This is a deliberate design choice: the fuse is serviceable and inexpensive, so a fault does not turn into a module replacement. That single detail can cut unplanned maintenance cost significantly compared with architectures where protection is embedded and non-replaceable.

Technical Specifications at a Glance

Cost Impact of the Current Ratings

The 750 mA bus rating and the 10 A I/O segment rating are the two numbers that most affect your bill of materials. A rack that would otherwise need an oversized 24 V supply plus separate distribution hardware can often run from a smaller, cheaper supply when the TM5SPS3 handles segmentation internally. Fewer components means lower purchase cost, less panel space, and shorter assembly time.

The derating curve is equally important for total cost of ownership. Between 55 and 60 °C, bus current drops to 500 mA. If your cabinet regularly runs hot, you either accept that reduced margin or you improve ventilation. Planning for this at design stage avoids a mid-project redesign, which is where budget overruns usually start.

Where This Module Fits

Compact machine control

Modicon LMC078, LMC058, and M258 controllers pair directly with this module. A packaging line using an M258 logic controller can distribute 24 V DC to its TM5 I/O slice without adding a separate power distribution block.

Motion applications

When the same rack runs a motion controller over a Sercos III bus, the TM5SPS3 supplies both the bus and the I/O segment. One module covers two power domains, which simplifies wiring and reduces the number of terminal points that can loosen over time.

CANopen networks

For CANopen interface modules, the module provides the 24 V DC rail the bus needs. Maintenance teams replacing a failed distribution point can restore the segment with a single part instead of tracing multiple feeds.

Replacement and Upgrade Path

If you are replacing an older distribution arrangement, verify three things before ordering. First, confirm your controller family: LMC078, LMC058, or M258. Second, confirm whether your bus is CANopen or Sercos III, since the module supports both. Third, check the ambient temperature at the mounting position, because the 55 to 60 °C band changes the available bus current.

The TM5SPS3 installs on DIN rail and meets vibration resistance of 1 gn at 8.4 to 150 Hz, plus 3.5 mm displacement at 5 to 8.4 Hz. Shock resistance is rated at 15 gn for 11 ms. In practice, this means the module tolerates the mechanical environment of a typical machine cabinet without special isolation hardware, which keeps installation cost down.

Environmental ratings support this as well. Operating altitude reaches 2000 m, storage altitude 3000 m, and relative humidity spans 5 to 95 % without condensation. Electrostatic discharge resistance is 4 kV on contact and 8 kV in air. These figures matter when equipment is installed in dusty or dry plant areas where static buildup is common.

Maintenance and Long-Term Reliability

Inspect the external 10 A fuse periodically and replace it only with a matching rating. Check terminal tightness during scheduled shutdowns, and confirm cabinet temperature stays within the operating range. Because the module has no moving parts, wear is minimal, and the main risk is environmental rather than mechanical.

From a cost perspective, the low 1.91 W dissipation and ≤ 25 mA consumption mean the module contributes very little to energy spend. Its real value shows up in avoided downtime: a single failed distribution point can idle an entire machine, and a stocked spare removes that risk at modest cost.

Please verify current lifecycle status and availability with SpareTechPLC before ordering. Their team can confirm stock and help you match the module to your existing Modicon TM5 configuration.

Frequently Asked Questions

What controllers work with the TM5SPS3?

It is compatible with Modicon LMC078, LMC058, and M258 controllers, covering both logic and motion controller roles.

Can it supply both the bus and the I/O segment at once?

Yes. It provides 750 mA to the TM5 power bus at -10 to 55 °C and up to 10 A to the I/O power segment.

What happens above 55 °C?

Bus current derates to 500 mA between 55 and 60 °C. Plan cabinet ventilation accordingly to keep full margin.

Does it need an external fuse?

Yes. Short-circuit protection relies on a 10 A external fuse, which is replaceable and inexpensive to service.

Is it suitable for CANopen and Sercos III?

Yes. The module supplies 24 V DC to TM5 I/O modules and to either a CANopen or Sercos III bus.