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Schneider TM221CE24U Modicon M221 24 I/O NPN Transistor Logic Controller 24VDC with Ethernet
| Place of Origin | Germany |
| Brand Name | Schneider Electric |
| Model Number | TM221CE24U |
Product Overview
The Schneider TM221CE24U is a compact Modicon M221 logic controller with 24 embedded digital I/O points. It includes 14 digital inputs and 10 NPN transistor outputs, operates from a 24 VDC power supply and provides embedded Ethernet connectivity.
This model is intended for machine-control applications requiring more embedded I/O than the 16-point controller while retaining compact dimensions, fast transistor switching and industrial Ethernet communication.
The U suffix identifies an NPN transistor-output configuration. Output polarity, common wiring and connected field-device compatibility must be verified during replacement and commissioning.
Main Features
- Exact commercial reference: TM221CE24U
- Compact Modicon M221 logic controller
- 24 embedded digital I/O points
- 14 digital inputs
- 10 NPN transistor outputs
- 24 VDC controller power supply
- Embedded Ethernet communication
- Embedded serial communication interface
- USB programming connection
- Fast solid-state output switching
- Supported high-speed counting and pulse functions
- Expandable with TM3 I/O modules
- Compatible with supported TM4 communication modules
- Compatible with selected TMC2 cartridges
- Programmed with EcoStruxure Machine Expert - Basic
Technical Specifications
| Model | TM221CE24U |
| Series | Modicon M221 |
| Product Type | Logic Controller |
| Controller Family | TM221CE |
| Form Factor | Compact Controller with Ethernet |
| Total Embedded I/O | 24 |
| Digital Inputs | 14 |
| Digital Outputs | 10 |
| Output Type | NPN Transistor Outputs |
| Output Code | U |
| Output Wiring | Sinking-output configuration; confirm common wiring and field-device polarity |
| Power Supply | 24 VDC |
| Embedded Ethernet | Yes |
| Ethernet Functions | Modbus TCP and supported Ethernet services; verify firmware and controller project |
| Serial Communication | Embedded serial line; verify port mode, connector and protocol settings |
| Programming Port | USB programming connection |
| Expansion Platform | TM3 local expansion I/O |
| Communication Expansion | Compatible TM4 communication modules or gateways |
| Cartridge Support | Compatible TMC2 cartridge family; verify slot and cartridge type |
| Programming Software | EcoStruxure Machine Expert - Basic |
| High-Speed Functions | High-speed counters and supported pulse outputs; verify exact channels and frequency limits |
| Supply Status | Confirm current regional availability before quotation |
Compatible System and Applications
The TM221CE24U is suitable for packaging machinery, conveyors, assembly systems, labeling equipment, automated production machines, pumps, fans and material-handling systems.
The 14-input and 10-output arrangement provides additional embedded capacity for sensors, switches, alarms, solenoid valves, electronic relays and compatible drive-control interfaces.
NPN transistor outputs support frequent switching, but the output current, field voltage, load polarity, leakage current and external protection must be verified for every connected device.
Maintenance and Replacement Notes
Verify the complete TM221CE24U model. TM221CE24T is a PNP transistor controller and uses a different output-wiring convention.
TM221CE24R uses relay outputs and a 100-240 VAC controller supply. It cannot be substituted without checking the controller power supply, output loads and field wiring.
Back up the controller project, Ethernet configuration, serial parameters, pulse-output settings, I/O mapping, expansion layout and firmware before replacing the original controller.
Related Models
Related 24-I/O Ethernet controllers include TM221CE24T with PNP transistor outputs and TM221CE24R with relay outputs.
TM221CE16U provides 16 embedded I/O, while TM221CE40U provides 40 embedded I/O for larger compact-control applications.
Inquiry and Supply Notes
Please provide the exact installed model, 24 VDC supply details, NPN field wiring, output-load information, Ethernet project, serial communication settings and required high-speed functions.
Firmware, TM3 expansion modules, cartridge options, product condition, test requirements, availability and delivery time must be confirmed before quotation.
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