TM221CE16T Modicon M221 Logic Controller – 16 I/O Transistor PNP with Ethernet

The TM221CE16T comes from the Modicon M221 range by Schneider Electric. This compact logic controller runs on 24 V DC and packs 16 I/O into a 95 mm wide frame. It mixes fast counting inputs, analog channels, PWM outputs, and built-in Ethernet. Engineers pick the TM221CE16T for small machines that need fast response and simple networking.

Summary

• The TM221CE16T offers 9 discrete inputs, 2 analog inputs, and 7 transistor outputs.
• Four fast inputs reach 100 kHz for high-speed counting and position capture.
• Two fast outputs run PWM and PTO modes at 100 kHz for motion tasks.
• Ethernet supports Modbus TCP client, server, and Ethernet/IP adapter roles.
• Adjustable PID control handles up to 14 loops for process regulation.

Top Selling Points

• Analog inputs reach 10-bit resolution with a 10 mV least significant bit.
• The controller keeps a real-time clock with drift under 30 s per month at 25 °C.
• Expansion bus powers add-on modules with 0.325 A at 5 V and 0.15 A at 24 V.
• Flash memory backs up 256 kB of application and data without a battery.
• Marine-grade EMC immunity meets LR, ABS, DNV, and GL specifications.

Core Technical Specifications

• Brand: Schneider Electric
• Model: TM221CE16T
• Series: Modicon M221
• Product type: Logic controller
• Rated supply voltage: 24 V DC (limits 20.4…28.8 V)
• Discrete I/O number: 16 total
• Discrete input number: 9 type 1 inputs per IEC 61131-2, including 4 fast inputs
• Analog input number: 2 channels at 0…10 V
• Analog resolution: 10 bits; LSB value 10 mV
• Analog accuracy: ±1 % of full scale
• Analog conversion time: 1 ms per channel plus one controller cycle
• Analog overload: ±30 V DC for 5 minutes; ±13 V DC permanent
• Discrete output number: 7 transistor outputs, including 2 fast outputs
• Output current: 0.5 A per channel; 3.5 A per output common
• Output logic: Positive logic (source)
• Input current: 7 mA for discrete input; 5 mA for fast input
• Input impedance: 3.4 kOhm discrete; 4.9 kOhm fast; 100 kOhm analog
• Response time inputs: 5 µs for fast input; 35 µs for other terminals
• Response time outputs: 5 µs at Q0…Q1; 50 µs at Q2…Q3; 300 µs at other terminals
• Filtering time: Configurable 0 ms, 3 ms, or 12 ms
• Output frequency: 100 kHz at Q0…Q1; 5 kHz at Q2…Q3; 0.1 kHz at Q4…Q6
• Counting inputs: 4 fast inputs at 100 kHz with 32-bit capacity
• Counting modes: Pulse/Direction, single phase, and A/B quadrature
• Positioning: PTO 2 axes pulse/direction at 100 kHz; 1 axis CW/CCW
• Regulation loop: Adjustable PID up to 14 simultaneous loops
• Memory: 256 kB application RAM with 10000 instructions; 256 kB internal variables RAM
• Data backup: 256 kB built-in flash memory
• Data storage: 2 GB SD card (optional)
• Battery: BR2032 lithium non-rechargeable, 4-year life, 1-year backup at 25 °C
• Execution time: 0.2 µs per Boolean instruction; 0.3 ms per 1 KInstruction
• Object areas: 512 %M bits, 512 %KW words, 255 %TM timers, 8000 %MW words, 255 %C counters
• Integrated connections: USB mini B 2.0; Ethernet RJ45; serial 1 RJ45 RS232/RS485
• Transmission rate: 1.2…115.2 kbit/s serial; 480 Mbit/s USB; 10/100 Mbit/s Ethernet
• Communication services: DHCP client, Modbus TCP slave/client/server, Ethernet/IP adapter
• Local signalling: LEDs for PWR, RUN, ERR, SD, BAT, SL, I/O state, ACT, and Link
• Insulation: 500 V AC between I/O and internal logic; non-insulated between inputs
• Mounting: TH35-15 or TH35-7.5 top hat rail per IEC 60715; panel with fixing kit
• Dimensions: 90 mm height, 70 mm depth, 95 mm width
• Product weight: 0.346 kg
• Operating temperature: -10…55 °C horizontal; -10…35 °C vertical
• Storage temperature: -25…70 °C
• Relative humidity: 10…95 % without condensation
• Pollution degree: ≤ 2
• Operating altitude: 0…2000 m; storage 0…3000 m
• IP degree: IP20 with protective cover in place
• Standards: EN/IEC 61131-2, EN/IEC 61010-2-201, EN/IEC 60664-1
• Certifications: DNV-GL, CSA, cULus, IACS E10, ABS, RCM, LR, EAC

Environment and Interference Resistance

• Electrostatic discharge immunity reaches 8 kV air and 4 kV contact per EN/IEC 61000-4-2.
• Electromagnetic field immunity holds 10 V/m across 80 MHz…1 GHz per EN/IEC 61000-4-3.
• Higher bands keep 3 V/m at 1.4…2 GHz and 1 V/m at 2…2.7 GHz.
• Fast transient immunity reaches 2 kV on power lines and 1 kV on I/O per EN/IEC 61000-4-4.
• Surge withstand reaches 2 kV common mode on AC lines per EN/IEC 61000-4-5.
• Conducted disturbance immunity holds 10 Vrms across 0.15…80 MHz per EN/IEC 61000-4-6.
• Marine EMC immunity meets LR, ABS, DNV, and GL specifications at 3 Vrms.
• Radiated emission meets class A limits at 10 m per EN/IEC 55011.
• Immunity to microbreaks reaches 10 ms for stable operation.
• Shock resistance holds 147 m/s² for 11 ms; vibration holds 1 gn at 8.4…150 Hz.

Installation Guide

• Clip the controller onto a TH35-15 or TH35-7.5 rail per IEC 60715.
• Use the fixing kit when you mount the unit on a flat panel.
• Wire 24 V DC power to the 3-terminal screw block.
• Connect analog signals to the 4-terminal connector for clean readings.
• Keep unshielded cable under 30 m for digital input and output signals.
• Limit shielded cable to 10 m for fast input and 3 m for fast output.
• Keep analog input cable under 1 m unshielded to avoid noise pickup.
• Plug the RJ45 connector into the Ethernet port for Modbus TCP access.
• Use the mini B USB 2.0 port to connect a programming terminal.
• Insert an optional 2 GB SD card for extra data storage.
• Maintain -10…55 °C ambient air for horizontal installation.

Package List

• 1 × TM221CE16T logic controller unit
• 1 × 3-terminal screw block for 24 V DC power supply
• 1 × 4-terminal connector for analog inputs
• 1 × removable screw terminal block for inputs
• 1 × removable screw terminal block for outputs
• 1 × protective cover for IP20 protection
• 1 × product documentation set

Shipping

• We ship worldwide through FedEx, UPS, and DHL.
• Each unit weighs 0.346 kg net before packing.
• We dispatch in-stock items within 1–2 business days after payment.
• We provide a 12-month warranty on every controller we sell.

FAQ

• Q: What analog signal range does the TM221CE16T accept?
  A: It accepts 0…10 V on two channels with 10-bit resolution and 10 mV steps.
• Q: How many expansion modules can I add?
  A: You can add up to 4 transistor expansion modules or 4 relay expansion modules.
• Q: Does the controller keep time without power?
  A: Yes, a BR2032 battery backs up the clock for one year at 25 °C.
• Q: What Ethernet services does this controller support?
  A: It supports DHCP client, Modbus TCP client/server/slave, and Ethernet/IP adapter roles.
• Q: How fast does the TM221CE16T execute logic?
  A: It runs 0.2 µs per Boolean instruction and 0.3 ms per 1 KInstruction.
• Q: What is the maximum output common current?
  A: Each output common carries up to 3.5 A with overload protection at 1 A.
• Q: Which cable length suits fast input signals?
  A: Keep shielded cable under 10 m for fast input to protect signal quality.

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