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Schneider Electric TM221C40R Modicon M221 Logic Controller

Schneider Electric TM221C40R Modicon M221 Logic Controller

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  • Manufacturer: Schneider Electric

  • Product No.: TM221C40R

  • Country of origin:France

  • Product Type: PLC CPU Modules

  • Payment: T/T, Western Union

  • Weight: 830g

  • Dimensions: 21.1 cm x 14.1 cm x 11.4 cm

  • Shipping port: Xiamen

  • Warranty: 12 months

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Description

Designed to handle centralized discrete automation tasks, the Schneider Electric TM221C40R serves as a high-density, AC-powered main processing unit within the Modicon M221 logic controller range. This compact base controller features 40 integrated discrete I/O channels, consisting of 24 digital inputs and 16 relay outputs, complemented by 2 high-speed analog inputs. Optimized for small-to-medium industrial architectures, it provides robust control capabilities while minimizing cabinet space usage.

Features

  • High-Density Discrete I/O: Built-in 24 discrete inputs (conforming to IEC 61131-2 Type 1) and 16 robust relay outputs.
  • Integrated Analog Inputs: Two onboard 0 to 10 V analog inputs for basic sensor integration without extra modules.
  • Flexible Communications: Features embedded RJ45 Ethernet, RJ45 serial link (RS232/RS485), and Mini-B USB programming ports.
  • Expandable Architecture: Supports Modicon TM3 expansion modules for additional I/O, safety, or communication configurations.
  • Memory Backup: Dedicated SD card slot for quick application transfer, data logging, and firmware updates.

Applications

  • Material Handling: Controls conveyor speeds, sorting systems, and small packaging machines.
  • Pumping and HVAC: Manages fluid levels, pressure loops, and fan control systems.
  • Machine Tool Automation: Integrates discrete sensor arrays and mechanical actuation switches.
  • Infrastructure Utilities: Ideal for distributed utility monitoring and auxiliary control panels.

Technical Specifications

Parameter Value / Rating
Manufacturer Schneider Electric
Product Range Modicon M221
Model / SKU TM221C40R
Supply Voltage Range 100 to 240 V AC
Discrete Input Count 24 (including 4 fast inputs)
Discrete Output Type Relay (Normally Open)
Discrete Output Count 16 Relay Outputs
Analog Input Range 2 inputs (0 to 10 V), 10-bit resolution
Relay Output Current 2 A per output (maximum)
Programming Software EcoStruxure Machine Expert - Basic
Operating Temperature -10 to 55 degC (horizontal mounting)
Shipping Weight (Calculated) 0.83 kg
Package Dimensions (Calculated) 21.1 cm x 14.1 cm x 11.4 cm

Connections and Interfaces

Terminal / Port Assignment / Function
L, N AC Power Supply Mains Connection (100 to 240 V AC)
FG Functional Ground Connection
I0 to I23 Discrete Inputs (I0-I3 support High-Speed Counter functions)
Q0 to Q15 Relay Outputs (arranged in isolated common groups)
AI0, AI1, COM Analog Inputs (0 to 10 V) and shared Analog Common
Ethernet (RJ45) Modbus TCP client/server protocol access
Serial (RJ45) RS232/RS485 Serial Link communication configuration

Empirical Engineering Insights

Alternative Models & Compatibility

The TM221C40R directly replaces older Twido modular or compact controller configurations during system modernization. When translating applications from TwidoSuite or TwidoSoft to EcoStruxure Machine Expert - Basic, pay careful attention to memory allocation variables (%MW) and input mapping offsets, as slight syntax translations are required to prevent data collision.

Application Pitfalls & Engineering Notes

Thermal dissipation limits require vertical spacing clearance of at least 50 mm above and below the controller housing. If the unit is installed vertically (90-degree rotation), the maximum ambient rating drops from 55 degC to 35 degC. Additionally, ensure transient voltage suppressors (snubbers) are wired across inductive AC loads connected to the relay outputs to prevent premature contact pitting.

Commissioning & Wiring Tips

The 0 to 10 V analog inputs (AI0, AI1) share a single ground (COM) that is tied to the internal logic ground. Using unshielded cable on these inputs in high-EMI environments can lead to control signal jitter. Always run analog signals in shielded twisted-pair (STP) cabling, grounding the shield only at the controller end.

Installation Guidelines

CRITICAL WARNING

De-energize all primary and field sensor power distribution circuits before installing or removing terminals. Verify that all residual charge has fully bled down. Failure to isolate input power paths may result in severe electrical shock, system bus errors, or permanent circuit board damage.

1
Mount the controller onto a standard 35 mm DIN rail inside a protective NEMA or IP-rated electrical enclosure. Secure the top and bottom locking clips.
2
Wire the L and N terminal connections to an isolated 100-240 V AC supply line. Connect the FG terminal directly to the enclosure ground bus.
3
Connect your field discrete inputs and outputs to their corresponding terminal blocks, verifying that the output load currents do not exceed the 2 A limit per channel.
4
Insert the programmed SD card or connect the Mini-B USB cable to download the application parameters via EcoStruxure Machine Expert - Basic.
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What software is used to program the TM221C40R?

This controller is programmed using EcoStruxure Machine Expert - Basic (formerly known as SoMachine Basic), which is available as a free download from the manufacturer.

How does mounting orientation affect the operating temperature limits?

When mounted horizontally, the operating range is -10 to 55 degC. Vertical mounting reduces the maximum allowable operating temperature to 35 degC to maintain reliable internal cooling.

Are the analog inputs on the TM221C40R isolated?

No, the two built-in 0 to 10 V analog inputs share a common ground reference with the internal electronics. Shielded twisted-pair cables are recommended to avoid electrical noise.

What is the maximum rating for the integrated relay outputs?

The relay outputs are rated for a maximum thermal current of 2 A per output. Inductive AC loads should be protected with external RC snubber networks to prolong contact life.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
France

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