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Brand: Schneider Electric
Schneider Electric TM221CE24R M221 Logic Controller 24 I/O Relay
Description
TM221CE24R Modicon M221 logic controller: what it is and how the code reads
The TM221CE24R is a Schneider Electric product described in the datasheet as: logic controller, Modicon M221, 24 IO, relay, Ethernet. The Modicon M221 is the compact logic controller of the M2xx family, aimed at small machines with built-in I/O, Ethernet and expansion through TM3 modules. Seven Star LLC supplies the TM221CE24R in Oman and the GCC as an independent supplier based in Muscat.
Decoding the reference: TM221 is the Modicon M221 controller family; CE indicates the Ethernet version; 24 is the I/O count shown in the datasheet title (24 I/O); and the final letter (R) is the output type, relay outputs here. The supply is 100 to 240 V AC.
Technical specifications of the TM221CE24R
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Schneider Electric / TM221CE24R |
| Description | logic controller, Modicon M221, 24 IO, relay, Ethernet |
| Range | Modicon M221 |
| Product type | Logic controller |
| Rated supply voltage | 100 to 240 V AC |
| Supply voltage limits | 85 to 264 V |
| Discrete inputs | 14, discrete input IEC 61131-2 Type 1 |
| Analogue inputs | 2 0 to 10 V |
| Discrete output type | Relay normally open |
| Discrete outputs | 10 relay |
| Discrete output voltage | 5 to 125 V DC; 5 to 250 V AC |
| Discrete output current | 2A |
| Total discrete I/O | 24 |
| Maximum I/O expansion modules | 7 (local I/O-Architecture); 14 (remote I/O-Architecture) |
| Discrete input logic | Sink or source (positive/negative) |
| Memory capacity | 256 kB user application and data RAM 10000 instructions; 256 kB internal variables RAM |
| Data backed up | 256 kB built-in flash memory backup of application and data |
| Data storage equipment | 2 GB SD card optional |
| Execution time per 1 K instructions | 0.3 ms event and periodic task |
| Real-time clock | With |
| Counting inputs | 4 fast input (HSC mode) 100 kHz 32 bits |
| Integrated connections | USB port mini B USB 2.0; Non isolated serial link serial 1 RJ45 RS232/RS485; Ethernet RJ45 |
| Ethernet port | 10BASE-T/100BASE-TX 1 100 m copper cable |
| Sensor power supply | 24 V DC 250 mA supplied by the controller |
| Mounting support | Top hat type TH35-15 rail IEC 60715; Top hat type TH35-7.5 rail IEC 60715 plate or panel with fixing kit |
| Dimensions | 110 mm (W) x 90 mm (H) x 70 mm (D) |
| Net weight | 0.395 kg |
| Degree of protection | IP20 with protective cover in place |
| Product certifications | LR cULus; ABS; DNV-GL; EAC; RCM; CE; UKCA cULus HazLoc |
| Environmental characteristic | Ordinary and hazardous location |
How the TM221CE24R runs the program and drives outputs
A logic controller scans its inputs, runs the application program in a cyclic task, and updates outputs each scan. The TM221CE24R has 14 discrete inputs; its output complement is listed in the datasheet as 10 relay, giving 24 points on the base unit. Execution time per 1 K instructions is listed as 0.3 ms event and periodic task.
Output type decides what you can switch directly. Relay outputs on the TM221CE24R switch both AC and DC loads at the ratings above and are isolated, but they wear with switching cycles, so use interposing devices for rapidly cycling loads.
Where the TM221CE24R fits in a machine control system
The TM221CE24R is programmed with Schneider Electric machine-automation software and communicates over Ethernet using the services listed in the datasheet (Modbus TCP server; Modbus TCP slave device; DHCP client; Modbus TCP client; Ethernet/IP adapter). Protocols listed for the integrated ports: USB port USB – SoMachine-Network; Non isolated serial link Modbus master/slave – RTU/ASCII or SoMachine-Network; Ethernet.
Expansion uses TM3 modules such as TM3DI8, TM3DQ16T and TM3AI4: the datasheet lists the maximum number of expansion modules as 7 (local I/O-Architecture) and 14 (remote I/O-Architecture). Other base units in the family include TM221CE40T, TM241CE24R, which differ by I/O count, output type and performance.
Selection and ordering checklist for the TM221CE24R
- Count required inputs and outputs and compare with 24 on the TM221CE24R, leaving spare points.
- Output type: R means relay; match the load voltage and switching frequency.
- Supply: 100 to 240 V AC with limits 85 to 264 V.
- Expansion: list the TM3 modules and check the maximum count and 5 V and 24 V expansion-bus current budget.
- Communication: confirm the protocols and number of connections needed against the datasheet.
- Software and cables: confirm the programming software version and cable needed for commissioning.
Installation, commissioning and maintenance of the TM221CE24R
Mount the unit on a 35 mm rail, keep the clearances for ventilation and observe the mounting orientation limit listed in the datasheet. The TM221CE24R measures 110 mm (W) x 90 mm (H) x 70 mm (D) and weighs 0.395 kg. Segregate input wiring from outputs and power cabling, use shielded cable where the datasheet requires it, and ground the shield at one end.
After first power-up, download the project, test each I/O point and save a backup of the final application. Back up a controller project after every change, and keep an SD card or file copy offline. The real-time clock backup battery is a periodic maintenance item; plan its replacement according to the datasheet backup time.
Typical applications of the TM221CE24R in Oman and the GCC
Controllers like the TM221CE24R run packaged pumping skids, compressors, packaging lines, HVAC plant, water treatment and small process equipment across Oman and the GCC. For hot, dusty sites the controller belongs inside a ventilated or air-conditioned panel and not outside its stated temperature range.
Information to send with an RFQ for the TM221CE24R
- Full reference TM221CE24R and quantity
- Required I/O count and type
- Expansion modules and communication needs
- Supply voltage
- Delivery location and timing
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.
Other Models in the Se M221 Range
Seven Star LLC supplies models from the Se M221 range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| Schneider Electric TM221CE24R M221 Logic Controller 24 I/O Relay | Logic Controllers | You are viewing this model |
| Schneider Electric TM221CE40T M221 Logic Controller 40 I/O PNP | Logic Controllers | View details |
| Schneider Electric TM221C24R Modicon M221 24 I/O Relay | Logic Controllers | View details |
| Schneider Electric TM221CE16R Modicon M221 16 I/O Ethernet | Logic Controllers | View details |
Datasheets & Documents
- Datasheet Schneider Electric TM221CE24R Datasheet Download
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About brand
Schneider Electric is the French group for energy management and industrial automation: low and medium voltage switchgear and circuit breakers, motor control, drives, PLCs, power monitoring, UPS systems and building management. Its history goes back to 1836, when the brothers Adolphe and Eugène Schneider took over the iron and steel works at Le Creusot in Burgundy. Over the 20th century the company left steel and heavy engineering and became an electrical group through acquisitions such as Merlin Gerin, Télémécanique, Square D and Modicon. Its head office is in Rueil-Malmaison near Paris, and its shares are listed on Euronext Paris.
Schneider Electric company profile
| Origins | 1836, Le Creusot, France: Adolphe and Eugène Schneider take over the Le Creusot foundry |
|---|---|
| Headquarters | Rueil-Malmaison (Paris region), France |
| Ownership | Public company listed on Euronext Paris |
| Key acquisitions | Télémécanique (1988), Square D (1991), Merlin Gerin (1992), Modicon (1997), APC (2007), Invensys (2014); majority owner of AVEVA software |
| Brand names still in use | Acti9, ComPacT and MasterPacT breakers, TeSys motor control, Altivar drives, Altistart soft starters, Modicon PLCs, Harmony control components, PowerLogic and Easergy protection and metering, APC UPS, EcoStruxure software platform |
| Product families | Low voltage distribution, medium voltage switchgear and protection relays, motor control and drives, PLCs and HMIs, power meters, UPS and cooling, enclosures, building automation and energy software |
Milestones
- 1836: The Schneider brothers acquire the Le Creusot works; the business grows in steel, locomotives and heavy engineering.
- 1975: First investment in Merlin Gerin, a French maker of electrical distribution equipment.
- 1988–1992: Télémécanique, Square D (USA) and Merlin Gerin join the group, making it an electrical specialist.
- 1997: Modicon, the company behind the first programmable logic controller, joins the group.
- 1999: The group takes the name Schneider Electric.
- 2007 and 2014: APC (UPS and data centre power) and Invensys (process automation) are acquired.
Choosing Schneider Electric breakers and motor control
Circuit breakers are chosen by current and breaking capacity. Acti9 miniature circuit breakers (iC60, C120) protect final circuits up to 125 A. ComPacT NSX molded case breakers cover about 16 to 630 A, and the letter after the frame size sets the breaking capacity: B, F, N, H, S, L from lowest to highest. MasterPacT air circuit breakers are used as main incomers on large switchboards. For motors, a TeSys contactor with an LRD overload relay or a GV2 motor circuit breaker suits direct starting, an Altistart soft starter reduces starting current, and an Altivar drive controls speed. The breaking capacity must always be at least the prospective short-circuit current at the point of installation.
Where Schneider Electric products are used
In Oman and the GCC, Schneider Electric equipment is found in main and sub-main switchboards of commercial and residential buildings, motor control centres in water, oil and gas and industrial plants, substations protected by Sepam and Easergy relays, data centres powered by Galaxy and APC UPS systems, and buildings controlled by EcoStruxure Building Operation.
APC by Schneider Electric: UPS and critical power
Since 2007, APC has been part of Schneider Electric and is now its product brand for uninterruptible power supplies, replacement batteries, battery packs, network management cards and rack power distribution. Our APC catalogue covers Smart-UPS line-interactive and on-line models, Easy UPS On-Line, the modular Symmetra LX, RM and PX ranges, Silcon three-phase systems and their spare part kits, and the RBC cartridges that keep them running. Schneider Electric breakers, drives and PLCs can be quoted together with APC UPS systems in one request.
Schneider Electric products we list
| Family | Examples |
|---|---|
| Circuit breakers | Acti9 iC60N, C120N, NSX100F, NSX250N, NSX630, EasyPact EZC, MasterPacT MTZ1, MasterPacT NW |
| Motor control | TeSys Deca LC1D, TeSys F, LRD overload relay, GV2ME08, Altistart 22, Altistart 480 |
| Drives | Altivar 12, Altivar 320, ATV340, Altivar Process 630, ATV930, Lexium 32 servo |
| PLCs, HMIs and relays | Modicon M221, M241, M580 BMEP582040, Zelio Logic, Magelis HMISTU655 |
| Protection, metering and power | Sepam series 20, Easergy P3U30, MiCOM P139, PM5560, iEM3255, Galaxy VS UPS |
Ordering Schneider Electric products: what we need
Send the commercial reference from the label (for example LC1D18M7 or ATV320U22N4C). For breakers, confirm the rated current, number of poles, breaking capacity and trip unit. For contactors, give the coil voltage. For drives, give the motor power and supply voltage. APC products are listed on their own brand page.
Facts checked against Schneider Electric's published company history, October 2026.
Browse Schneider Electric products by category: Circuit Breaker, Electrical & Power Modules, AC Drives, PLC & I/O Cards, Metering Systems, UPS and Batteries.
FAQ
Questions about the Schneider Electric TM221CE24R M221 Logic Controller
Answers from our engineering team on installation, compatibility and integration.
01How many I/O does the TM221CE24R have?
The datasheet lists 24 total discrete I/O: 14 inputs; outputs listed as 10 relay.
02What supply voltage does the TM221CE24R need?
The rated supply is 100...240 V AC with limits 85…264 V.
03What output type does the TM221CE24R have?
It has Relay normally open outputs; check the voltage and current ratings in the datasheet.
04Does the TM221CE24R have Ethernet?
Yes, it has an Ethernet port (10BASE-T/100BASE-TX 1 100 m copper cable) with the services listed in the datasheet.
05Can I extend the TM221CE24R with expansion modules?
Yes. The datasheet lists a maximum of 7 (local I/O-Architecture).
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