Schneider TM221CE16U Programmable Logic Controller
The TM221CE16U from Schneider Electric is a compact and efficient PLC (Programmable Logic Controller) designed for industrial automation systems requiring high-speed and reliable control.

| Brand | Schneider |
| Product Type | PLC - Programmable Logic Controller |
| Product | TM221CE16U |
Schneider TM221CE16U Programmable Logic Controller – Technical Specifications
| Specification | Value |
|---|---|
| Maximum leakage current | 0.1 mA for transistor output |
| Discrete output logic | Negative logic (sink) |
| Minimum load | - |
| Conversion time | 1 ms per channel + 1 controller cycle time for analogue input analog input |
| Ambient air temperature for storage | -25…70 °C |
| Pollution degree | <= 2 |
| Maximum current per output common | 3.5 A |
| Configurable filtering time | 0 ms for input3 ms for input12 ms for input |
| Power supply output current | 0.325 A 5 V for expansion bus0.15 A 24 V for expansion bus |
| Reset time | - |
| Discrete output voltage | 24 V DC |
| Discrete output type | Transistor |
| Switching frequency | - |
| Output frequency | 100 kHz for fast output (PWM/PLS mode) at Q0...Q15 kHz for output at Q2...Q30.1 kHz for output at Q4...Q6 |
| Backup time | 1 year at 25 °C (by interruption of power supply) |
| Maximum power consumption in VA | - |
| IP degree of protection | IP20 with protective cover in place |
| [Us] rated supply voltage | 24 V DC |
| Transmission rate | 1.2...115.2 kbit/s (115.2 kbit/s by default) for bus length of 15 m for RS4851.2...115.2 kbit/s (115.2 kbit/s by default) for bus length of 3 m for RS232480 Mbit/s for USB |
| Input impedance | 3.4 kOhm for discrete input100 kOhm for analog input4.9 kOhm for fast input |
| Range of product | Modicon M221 |
| Net weight | 0.626 kg |
| Discrete output number | 7 transistor 2 fast output |
| Discrete input current | 7 mA for discrete input5 mA for fast input |
| Supply voltage limits | 20.4…28.8 V |
| Depth | 70 mm |
| Discrete I/O number | 16 |
| Electrical connection | removable screw terminal block for inputs removable screw terminal block for outputs terminal block, 3 terminal(s) for connecting the 24 V DC power supply connector, 4 terminal(s) for analogue inputsMini B USB 2.0 connector for a programming terminal |
The TM221CE16U Schneider M221 NPN Transistor Controller operates at a 24 V DC supply voltage with negative logic (sink) transistor outputs, making it suitable for fast-response digital control. It includes 7 transistor outputs and 2 fast outputs operating up to 100 kHz for high-speed switching and precise timing. With a maximum current per output of 3.5 A and a configurable filtering time of 0, 3, or 12 ms, it ensures accurate signal processing and reduced interference in noisy industrial environments. The controller’s conversion time of 1 ms per channel plus cycle time supports real-time automation, while its IP20-rated enclosure and 70 mm compact depth make installation simple in control cabinets. The TM221CE16U PLC provides strong communication flexibility via RS232, RS485, and USB interfaces, enabling reliable data exchange with Modbus-compatible devices. It performs consistently in extreme operating conditions, maintaining reliability from -25°C to 70°C and altitudes up to 2000 m, backed by a 1-year backup time at 25°C for data retention during power loss.
The Schneider Electric TM221CE16U is widely used in industrial automation setups such as conveyor systems, material handling machines, compact packaging units, and testing benches that demand fast and reliable logic control. Its NPN output configuration makes it ideal for integration with sensors and actuators that require current-sinking control. Maintenance engineers and automation specialists value its long operational life, minimal wiring complexity, and compatibility with EcoStruxure Machine Expert for easy programming and monitoring. The TM221CE16U Schneider PLC delivers dependable performance that improves productivity and reduces downtime, making it a trusted choice for modern automation systems.
For more detailed specifications, configuration data, and communication setup, refer to the official TM221CE16U Datasheet and TM221CE16U Manual. You can also check the latest TM221CE16U Price and availability from authorized Schneider Electric distributors. Combining efficiency, precision, and durability, the Schneider TM221CE16U remains one of the most preferred controllers in the Modicon M221 PLC series for industrial automation. Belonging to the Modicon M221 family, this Schneider M221 NPN Transistor Controller TM221CE16U provides seamless performance in process control, packaging, and machine automation applications.




