Schneider TM5SPS2 Power Distribution Module

Modicon TM5 24VDC I/O Power Distribution Module (PDM)

It belongs to Schneider TM5 distributed remote I/O series, compatible with M258 / LMC058 controllers. It supplies power to the TM5 backplane bus, and provides segmented 24V field power for I/O modules. It isolates different I/O power domains and expands backplane power capacity.

✅ Core Functions

1. Power supply for TM5 internal power bus: Max. output 1136mA (≤55°C); 740mA (55~60°C)
2. I/O field power segment: 24VDC, max. 10A, to supply field side of DI/DO/AI/AO I/O modules on the right side of this base
3. Segmented power isolation: A full TM5 station can be divided into multiple independent 24V I/O power domains. Short-circuit on one segment will not shut down the entire bus.
4. Diagnostic status bits for bus: Bus OK / power warning, I/O data valid, readable via PLC program.

📋 Electrical Specifications

Rated input voltage: 24VDC, operating range 20.4 ~ 28.8VDC

Max current of I/O power segment: 10A. No built-in fuse; external Type T slow-blow fuse (max 10A/250V) is mandatory.

Reverse polarity protection: Not available. Never reverse +24V and 0V wiring.

Isolation: 500Vac RMS isolation between TM5 bus circuit and I/O power segment

Max power dissipation: 1.91W, module self-consumption 25mA@24V

Protection class: IP20 (cabinet mounting only)

Dimensions: W12.5mm × H99mm × D75mm, weight approx. 30g

Module ID code: 7104 (decimal)

Ambient operating temperature: -10 ~ +55°C (full current); derating from 55~60°C

🧩 Hardware & Configuration

Compatible bus bases: TM5ACBM01R / TM5ACBM05R; Terminal block TM5ACTB12PS

Mounting: DIN rail, slotted on TM5 bus base, mixed installation with TM5 I/O modules

Software: Machine Expert (SoMachine). Module status word is available for reading bus power warning and network status.

⚠️ TM5SPS2 vs TM5SPS2F (Key Selection Guide)

TM5SPS2: External fuse required, max 10A for I/O segment

TM5SPS2F: Built-in 6.3A fuse, I/O segment limited to 6.3A, no external fuse needed

📌 Typical Applications

Packaging machinery, material handling, machine tool distributed remote I/O islands. Deploy TM5SPS2 for backplane power shortage or segmented protection for sensor/actuator power.

🛠️ Troubleshooting Guide

1. Bus warning bit triggered: Check 24V voltage drop, blown fuse, overload or short circuit in I/O segment
2. Module no communication: Verify TM5 bus connector, base address and module ID recognition
3. No field power to I/O modules: Check external 24V input at PS2 terminals and external fuse status

Note: All 0V connections must be tied together and connected to Functional Earth (FE) to meet EMC requirements. Only PELV safety extra-low voltage power is permitted; mains AC voltage cannot be directly connected.

📎 Alternatives & Series Comparison

TM5SPS1: I/O power segmentation only, no TM5 backplane bus power supply

TM5SPS2F: Same function with built-in 6.3A fuse

TM5SBER2: TM5 remote I/O receiver module with integrated bus power supply

Schneider TM5SPS2 Wiring Instructions

TM5SPS2 must be used with TM5ACTB12PS (12-pin spring terminal block). The terminal block snaps under the TM5ACBMxx bus base, and the electronic module plugs onto the base. Terminal numbers are printed on the terminal block.

1. Terminal Definition (12-pin TM5ACTB12PS)

✅ Quick distinction between two power rails:

PS1 (Pin1/2) = TM5 backplane bus power; PS2 (Pin5/6) = I/O field load power. Two separate 24V supplies can be used for isolated power segmentation.

2. Two Typical Wiring Schemes

Scheme 1: Single 24V Power Supply (Standard)

+24V from power supply is split into two branches: one through 1A T-fuse → Terminal 1; another through 10A T-fuse → Terminal 5

Power 0V: Tie Terminal 2 and Terminal 6 together, connect to power supply 0V. Link 0V to Functional Earth (FE) for EMC compliance.

Notes: Bus power and I/O power share the same source. Short circuit on I/O side will not directly damage the bus, but the power supply capacity must cover both backplane and I/O loads.

Scheme 2: Two Independent 24V Supplies (Isolated Segmentation, Recommended)

PS1 (Pin1/2): Independent 24V supply with 1A slow-blow fuse, dedicated for TM5 backplane bus

PS2 (Pin5/6): Separate 24V supply with 10A slow-blow fuse for sensors and actuators of right-side I/O modules

The 0V of the two power supplies must be interconnected and connected to FE functional earth

Advantage: Short circuit in I/O circuit will blow only the PS2 fuse, while TM5 backplane bus remains online. Suitable for high-reliability machines.

3. Wire Specification (Spring Terminal)

Wire gauge range: 0.08 ~ 2.5 mm², recommended:

Main power cable: 0.75~1.5 mm²

Low-current signal: 0.5 mm²

Wire temperature rating ≥80°C, stripping length approx.8mm

4. LED Indicator Definition (On Module Body)

E Fault LED:

Blinking: Low bus voltage / insufficient PS1 voltage / bus overload. Common field mistake: only PS2 (Pin5/6) wired while PS1 (Pin1/2) is missing → E LED blinks.

Steady ON: PS2 I/O power segment fault, overload or short circuit

RUN LED: Steady ON: Module healthy; OFF: No module power or bus fault

5. Critical Safety & Wiring Prohibitions
6. ❌ No built-in fuse! External Type T slow-blow fuse is mandatory for PS2 (max 10A). PS1 requires 1A slow-blow fuse. Module damage may occur without proper fusing in short-circuit events.
7. ❌ No reverse polarity protection. Never swap +24V and 0V; reversed polarity will permanently damage TM5SPS2.
8. ❌ Only PELV/SELV safety isolated 24VDC power supplies are allowed. Mains AC cannot be connected directly.
9. ❌ Do not wire NC unused terminals (3,4,7~12) to prevent accidental short circuits.
10. ✅ EMC mandatory requirement: All 0V tied together and connected to FE functional earth; FE shall not be confused with protective earth PE.
11. ✅ Current derating: ≤55°C ambient for full backplane 1136mA; reduced to 740mA for 55~60°C.
12. Pre-power-on Wiring Check List
13. Confirm PS1 (Pin1,2) 24V is connected; do not only wire PS2 (Pin5,6)
14. Verify Type T slow-blow fuses with correct ratings
15. All 0V commoned and bonded to FE
16. Terminals fully clamped, no loose connection or exposed copper strands causing short
17. Measure before power-up with multimeter: 24VDC between pin1-2; 24VDC between pin5-6, correct polarity
18. Configuration Notes (Machine Expert / SoMachine)

When the module is inserted into the base, software recognizes Module ID:7104. Status words available:

DcOk: Boolean flag for valid bus power

Bus power warning bit: Low voltage pre-alarm, usable for PLC alarm programming

Schneider Modicon TM5 Full Series Model List & Bill of Materials

Compatible Controllers: M258 / LMC058 / LMC078; Programming Software: Machine Expert (formerly SoMachine)

System architecture: Bus base + electronic module + removable spring terminal block. SPS power distribution modules are core components for power segmentation.

1. Power Distribution Modules (PDM, same series as TM5SPS2)

2. Bus Transceiver Modules (Remote Station Core)

3. Bus Bases (Mechanical Base, modules plug onto bases)

Two base types: White straight-through bases, Grey isolated bases (for SPS power/transceiver modules)

|TM5ACBM11|White Bus Base|24V I/O power pass-through, no address rotary switch|Standard DI/DO/AI/AO modules|

|TM5ACBM15|White Bus Base|Power pass-through, with rotary address switch|Standard DI/DO/AI/AO modules|

|TM5ACBM01R|Grey Isolated Base|Isolates I/O power on left side, no address switch|SPS power modules, SBER2 receiver|

|TM5ACBM05R|Grey Isolated Base|Left I/O power isolation, with address rotary switch|SPS power modules, SBER2 receiver|

|TM5ACBN1|Sercos Dedicated Base|Sercos III bus special base, used with TM5SPS3|TM5NS31, TM5SPS3|

4. Removable Spring Terminal Blocks (Must be ordered separately)

5. Digital Input Modules DI

6. Digital Output Modules DO

7. Mixed I/O Modules DI+DO

8. Analog Modules AI / AO

9. High-speed Counter / Encoder Modules (SE Series)

10. Communication Interface Modules

11. Accessories
12. TM5SD000: Dummy filler module for reserved slots
13. TM5SPDG12F / TM5SPDD12F: 12-channel power distribution terminal module
14. TM5SPDG5D4F: Multi-channel combined power distribution module

✅ TM5SPS2 Minimum Complete BOM for Purchase

1. TM5SPS2 Power Distribution Electronic Module
2. TM5ACBM01R Grey Isolated Base (no address) / TM5ACBM05R (with address rotary switch), select one
3. TM5ACTB12PS Grey 12-pin spring terminal block (mandatory, separate order item)

Assembly rule: Insert SPS module into grey isolated base TM5ACBM01R/05R; snap TM5ACTB12PS terminal block underneath the base.

✅ Quick Selection Rules

1. Standard DI/DO/AI/AO → White base TM5ACBM11/15 + white terminal block ACTB06/12
2. SPS power segmentation, SBER2 receiver module → Grey isolated base + Grey ACTB12PS terminal block
3. Insufficient backplane power, need segment protection → TM5SPS2; prefer built-in fuse for simpler wiring → TM5SPS2F
4. Sensor power segmentation only, no requirement to boost backplane power → TM5SPS1 / TM5SPS1F