Schneider Electric TM221CE24T Modicon M221 24 I/O Transistor

TM221CE24T a 24 I/O Modicon M221 controller with transistor outputs

The TM221CE24T is a Schneider Electric product listed in the datasheet as: logic controller, Modicon M221, 24 IO, transistor, PNP, Ethernet. The Modicon M221 is a compact logic controller for small machines programmed in EcoStruxure Machine Expert Basic. The CE24T is the 24 I/O model with 14 inputs, 10 transistor outputs and an Ethernet port, powered from 24 V DC, and it is the choice when outputs drive solenoid valves, contactor coils or drives rather than heavy relay loads. Seven Star LLC supplies the TM221CE24T in Oman and the GCC as an independent supplier based in Muscat.

Decoding the reference: TM221 is the M221 logic controller, C means compact, E adds Ethernet, 24 is the I/O count, and T marks transistor outputs. The datasheet title adds PNP, meaning the outputs source current (positive logic).

Technical specifications of the TM221CE24T

I/O and power data of the TM221CE24T

Supply voltage: 24 V DC. Supply voltage limits: 20.4 to 28.8 V. Discrete inputs: 14, discrete input 4 fast input IEC 61131-2 Type 1. Discrete outputs: 10 transistor 2 fast output. Discrete I/O: 24. Analogue inputs: 2 0 to 10 V. Input resolution: 10 bits. Input voltage: 24 V. Output type: Transistor. Output voltage: 24 V DC. Output current: 0.5 A. Ethernet: 10BASE-T/100BASE-TX 1 100 m copper cable. Communication protocols: USB port USB – SoMachine-Network; Non isolated serial link Modbus master/slave – RTU/ASCII or SoMachine-Network; Ethernet. Output current: 0.52 A 5 V expansion bus; 0.2 A 24 V expansion bus. Mechanical durability: 20000000 cycles transistor output.

Of the 14 inputs, four are fast inputs with a 5 microsecond turn-on on I0, I1, I6 and I7, which can count pulses from encoders and flow meters. Of the 10 transistor outputs, two are fast outputs reaching 100 kHz in PWM or pulse mode, suited to a stepper or a small servo command. Two analogue inputs of 0 to 10 V with 10-bit resolution are built in.

Supply is 24 V DC within 20.4 to 28.8 V, with an inrush of 35 A. Power consumption without expansion is 4.8 W and up to 14 W with the maximum expansion. The controller can take up to 7 local expansion modules, or 14 in a remote I/O architecture.

Where the TM221CE24T sits in the M221 family

Within the M221 compact family the transistor models are for DC loads and fast outputs, while the relay models such as the TM221CE40R switch AC and DC loads up to 2 A per output. This unit has no relay isolation, so inductive loads need suppression and AC loads need interposing relays.

The TM221C16T is the same architecture with 16 I/O and no Ethernet, while the TM221CE24T gives more I/O and an Ethernet port for programming, Modbus TCP and HMI connection. The TM3 expansion modules attach on the right, so the choice of the base controller defines how far the project can grow.

Selection checklist for the TM221CE24T

• I/O count: 14 inputs and 10 outputs, with 4 fast inputs and 2 fast outputs.
• Output type: PNP transistor, 24 V DC, 0.5 A per output.
• Sensors: sink or source input wiring is configurable.
• Expansion: how many TM3 modules are required (up to 7 local).
• Network: Ethernet for programming and Modbus TCP.
• Supply: 24 V DC from a stabilised power supply, with proper fusing.

Wiring and programming of the TM221CE24T

Provide a stable 24 V DC supply and separate the supply of inductive loads where possible. Add diodes or suppressors across coils to protect transistor outputs, since fast outputs are especially sensitive.

Connect to the controller over Ethernet or USB, create the application and use the simulator before downloading. After commissioning, save the project file and the controller memory image so the machine can be restored after a fault.

Typical applications of the TM221CE24T in Oman and the GCC

In Oman and the GCC the M221 is a popular controller for small skid-mounted systems, packaging machines, dosing units and building services. Panels in hot rooms should be checked against the controller temperature limits and kept dust-free.

Dimensions, environment and approvals of the TM221CE24T

For the TM221CE24T, plan the mounting space from the datasheet: 110 mm (W) x 90 mm (H) x 70 mm (D). The TM221CE24T weighs 0.395 kg. Mounting, derating and enclosure choices follow the environmental data below, which should be compared with the actual panel temperature and the dust and humidity of the site in Oman and the GCC.

Ambient temperature limits in the datasheet: -10 to 55 °C horizontal installation. Relative humidity: 10 to 95 %, without condensation in operation; 10 to 95 %, without condensation in storage. Ingress protection: IP20 with protective cover in place. Operating altitude: 0 to 2000 m. Vibration resistance: 3.5 mm 5 to 8.4 Hz symmetrical rail; 3.5 mm 5 to 8.4 Hz panel mounting; 1 gn 8.4 to 150 Hz symmetrical rail; 1 gn 8.4 to 150 Hz panel mounting. Shock resistance: 147 m/s² 11 ms. Standards listed: IEC 61131-2; UL 508; CAN/CSA C22.2 No. 213; IACS E10; ANSI/ISA 12-12-01. Certifications listed for this reference: ABS; EAC; RCM cULus; LR; DNV-GL; CE; UKCA cULus HazLoc.

Information to send with an RFQ for the TM221CE24T

• Full reference and quantity required
• Existing equipment, panel or rack it must fit
• Supply voltage, load or signal details of the application
• Required delivery location and timing
• Whether a spare, a replacement or a new installation

Documents and quotation

A datasheet for this product is attached on this page. It lists the electrical, mechanical and environmental data summarised above.

Send us the part number, quantity and application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and does not represent itself as an official channel of the manufacturer.