Schneider TM221C16T Controller – 24V, Fast I/O, 100 kHz Positioning

Product Overview

TM221C16T is a compact logic controller from Schneider Electric’s Modicon M221 series. It delivers 16 I/O with transistor PNP outputs. Ideal for small to medium automation tasks. This controller combines performance and simplicity for machine control.

Engineered for reliability in industrial environments. Supports fast counting, positioning, and PID regulation. Easy to program with SoMachine software. Quick installation on DIN rail or panel.

Key Features at a Glance

• Controller M221, 16 I/O transistor PNP
• Supply voltage 24 V DC
• Discrete inputs 9 (4 fast), analog inputs 2 (0…10 V)
• Transistor outputs 7 (2 fast, 100 kHz)
• Memory 256 kB RAM + 256 kB flash
• Communication USB, RS485, RS232 (Modbus)
• Protection Overload, short-circuit, automatic reset

Technical Specifications

• Brand Schneider Electric
• Model TM221C16T
• Series Modicon M221
• Type Logic controller, transistor PNP
• Rated supply voltage 24 V DC (limits 20.4…28.8 V)
• Inrush current ≤ 35 A
• Power consumption ≤ 10 W (with expansion), ≤ 3.9 W (without)
• Output current per common 3.5 A
• Discrete output current 0.5 A per channel
• Analog input resolution 10 bits, LSB 10 mV
• Conversion time 1 ms/channel + cycle time
• Fast input frequency up to 100 kHz
• Fast output frequency up to 100 kHz (PWM/PLS)
• Response time (fast I/O) 5 µs (on/off)
• Filtering time configurable 0, 3, 12 ms
• Memory capacity 256 kB user app/data, 256 kB internal vars
• Data backup Flash memory, optional SD card (2 GB)
• Battery BR2032, life 4 years, backup 1 year at 25 °C
• Real-time clock drift ≤ 30 s/month
• PID loops up to 14 simultaneous
• Positioning PTO 2 axes (100 kHz), pulse/direction or CW/CCW
• Counting 4 fast inputs (HSC), 32-bit, 100 kHz
• Communication ports USB Mini-B, RS485, RS232
• Transmission rate 1.2…115.2 kbit/s (RS485/RS232), 480 Mbit/s (USB)
• Protocols Modbus RTU/ASCII, SoMachine-Network

Environmental & Mechanical

• Operating temperature -10…55 °C (horizontal), -10…35 °C (vertical)
• Storage temperature -25…70 °C
• Relative humidity 10…95% without condensation
• IP degree IP20 (with cover)
• Pollution degree ≤ 2
• Operating altitude 0…2000 m
• Vibration resistance 3.5 mm (5…8.4 Hz), 1 gn (8.4…150 Hz)
• Shock resistance 147 m/s² (11 ms)
• Mounting TH35-15/7.5 rail or panel with kit
• Dimensions 90 x 70 x 95 mm (H x D x W)
• Weight 0.346 kg

Installation & Wiring

• Mounting Symmetrical rail TH35-15 or TH35-7.5, or plate/panel
• Electrical connection Mini B USB, removable screw terminals
• Cable distance Shielded fast input 10 m, unshielded output 30 m
• Insulation 500 V AC (input-output), 1500 V AC (supply-ground)
• Wiring Sink/source inputs, positive logic outputs
• Overload protection 0.2 A, automatic reset after 1 s

Compatibility & Expansion

• I/O expansion Up to 4 modules (transistor or relay)
• Expansion bus power 0.325 A at 5 V, 0.15 A at 24 V
• Software SoMachine, SoMachine-Network
• Communication Modbus master/slave, USB, RS232/RS485
• SD card Optional 2 GB for data storage

Certifications & Standards

• Product certifications ABS, CSA, CULus, LR, IACS E10, RCM, EAC, DNV-GL
• Standards EN/IEC 60664-1, 61131-2, 61010-2-201
• Environmental Green Premium, RoHS compliant (since 1415)
• REACh No SVHC above threshold
• Electromagnetic immunity ESD 4/8 kV, radiated 10 V/m, fast transients 2 kV
• Surge withstand 2 kV (AC power), 1 kV (I/O)
• Conducted emissions Class A per EN/IEC 55011

Package Contents & Warranty

• Included Controller unit, terminal blocks, USB cable (not always), documentation
• Warranty 12 months against manufacturing defects
• Shipping 12-24 hours dispatch via FedEx, UPS, or DHL
• Contact For inquiries: sales@powergearx.com or +86 18030005825 (WhatsApp)

Expert Review

“The TM221C16T offers exceptional value for small to mid-size control systems. Its fast I/O and built-in positioning make it ideal for conveyor and packaging lines. The SoMachine environment simplifies programming and troubleshooting. For reliable, cost-effective automation, this controller is a top pick.” — Automation Engineer, Powergear X.

Manager’s Insight

“We stock this model for its robustness and ease of use. It reduces downtime with quick diagnostics and automatic protection. The expansion capability allows scalability without changing the core controller. A smart investment for machine builders.” — Product Manager, Powergear X.

Typical Applications

• Small conveyor systems
• Packaging machinery
• Labeling and filling machines
• Simple positioning tasks (PTO)
• PID control for temperature or pressure
• Material handling equipment
• OEM machine control panels

Frequently Asked Questions (FAQ)

• What is the maximum number of expansion modules?
  Up to 4 modules (transistor or relay).
• Can I use this controller with 110 V AC?
  No, only 24 V DC supply is supported.
• How do I program the TM221C16T?
  Use SoMachine software via USB or RS485.
• Does it support real-time positioning?
  Yes, PTO up to 2 axes at 100 kHz.
• What is the battery life for data backup?
  4 years typical, backup for 1 year at 25 °C.
• Is the controller suitable for harsh environments?
  Yes, rated for -10…55 °C and vibration/shock.

Selection Guide

• Choose TM221C16T if you need 16 I/O, fast counting, and positioning.
• For analog signals – built-in 2 analog inputs (0-10 V).
• For expansion – add up to 4 modules for more I/O.
• Communication – RS485 for Modbus RTU, USB for programming.
• Budget-friendly – high performance without extra hardware costs.
• Backup – optional SD card for data logging and program storage.

Contact: sales@powergearx.com | +86 18030005825 (WhatsApp)

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