Schneider Modicon M221 TM221C16T Logic Controller – 16 I/O Transistor PNP, 24 V DC

The TM221C16T belongs to the Schneider Electric Modicon M221 controller range. It delivers 16 discrete I/O points with transistor PNP outputs and a 24 V DC supply. The unit adds 2 analogue inputs and 4 fast counting channels for compact machines. Engineers pick the TM221C16T when they need fast PWM control, PTO positioning and simple panel wiring.

Summary

• The TM221C16T packs 9 discrete inputs, including 4 fast inputs rated at 100 kHz.
• It adds 2 analogue inputs with 10-bit resolution and a 10 mV least significant bit.
• Seven transistor PNP outputs drive 0.5 A loads with overload and short-circuit protection.
• The controller runs on 24 V DC with a supply range of 20.4 to 28.8 V.
• It supports 4 expansion modules for more transistor or relay outputs.
• Schneider Electric builds this unit to EN/IEC 61131-2 and EN/IEC 61010-2-201.

Why Engineers Choose This Controller

• Fast output response: Q0 and Q1 switch in 5 µs for precise PWM and pulse tasks.
• Built-in analogue: two 0–10 V inputs remove extra modules from small panels.
• Positioning ready: PTO drives 2 axes in pulse/direction mode at 100 kHz.
• Strong memory: 256 kB backs up the application, data and internal variables.
• Marine certified: ABS, LR, DNV-GL and RCM approvals cover harsh marine decks.

Technical Specifications

• Brand: Schneider Electric
• Model: TM221C16T
• Series: Modicon M221
• Manufacturer: Schneider Electric
• Product type: Logic controller with 16 discrete I/O
• Rated supply voltage: 24 V DC, with limits of 20.4–28.8 V
• Inrush current: ≤ 35 A
• Power consumption: ≤ 10 W at 24 V with maximum expansion modules
• Base power draw: ≤ 3.9 W at 24 V without expansion modules
• Expansion bus supply: 0.325 A at 5 V and 0.15 A at 24 V
• Discrete inputs: 9 inputs, type 1 per IEC 61131-2, including 4 fast inputs
• Input logic: sink or source (positive/negative)
• Input current: 7 mA for discrete inputs and 5 mA for fast inputs
• Input impedance: 3.4 kΩ for discrete inputs and 4.9 kΩ for fast inputs
• Input thresholds: state 1 ≥ 15 V; state 0 ≤ 5 V
• Analogue inputs: 2 channels, 0–10 V range, 10-bit resolution, 10 mV LSB
• Analogue accuracy: ±1 % of full scale
• Analogue conversion: 1 ms per channel plus one controller cycle
• Analogue overload: ±30 V DC for 5 minutes; ±13 V DC permanent
• Analogue input impedance: 100 kΩ
• Discrete outputs: 7 transistor PNP outputs, including 2 fast outputs
• Output current: 0.5 A per output; 3.5 A per output common
• Output voltage drop: ≤ 1 V; leakage current 0.1 mA
• Output protection: overload and short-circuit protection at 0.2 A with 1 s auto reset
• Output frequency: 100 kHz on Q0–Q1, 5 kHz on Q2–Q3, 0.1 kHz on Q4–Q6
• Response time: 5 µs on Q0–Q1, 50 µs on Q2–Q3, 300 µs on other outputs
• Input response: 5 µs on fast inputs I0, I1, I6, I7; 100 µs turn-off on other inputs
• Configurable filtering: 0 ms, 3 ms or 12 ms for inputs
• Counting inputs: 4 fast inputs at 100 kHz, 32-bit capacity, HSC mode
• Control signal types: A/B quadrature, pulse/direction, single phase
• Positioning: PTO for 2 axes in pulse/direction at 100 kHz; 1 axis in CW/CCW
• Function blocks: PWM, PLS and frequency generator
• Regulation loop: adjustable PID with up to 14 simultaneous loops
• Execution time: 0.2 µs per Boolean instruction; 0.3 ms per 1 K instructions
• Event task response: 60 µs
• Memory: 256 kB for application and data RAM; 256 kB for internal variables
• Backup memory: 256 kB built-in flash for application and data
• Data storage: optional 2 GB SD card
• Battery: BR2032 lithium, 4-year life, 1-year backup at 25 °C
• Object areas: 512 %M bits, 8000 %MW words, 512 %KW constants, 255 timers, 255 counters
• Real-time clock: yes, with drift ≤ 30 s per month at 25 °C
• Communication ports: USB mini B 2.0; serial 1 RS485 RJ45; serial 2 RS232/RS485 RJ45
• Transmission rate: 1.2–115.2 kbit/s serial; 480 Mbit/s USB
• Protocols: Modbus master/slave RTU/ASCII, SoMachine-Network, USB
• Serial link supply: 5 V at 200 mA
• Local signalling: LEDs for PWR, RUN, ERR, SD, BAT, SL1, SL2 and per-channel I/O
• Cable distance: 10 m shielded for fast input; 30 m unshielded for output and digital input
• Analogue cable: 1 m unshielded; fast output 3 m shielded
• Insulation: 2300 V AC between supply and internal logic; 500 V AC between I/O and logic
• Mounting: TH35-15 or TH35-7.5 rail per IEC 60715, or panel with fixing kit
• Dimensions: 90 mm height, 70 mm depth, 95 mm width; weight 0.346 kg
• Ambient temperature: −10–55 °C horizontal; −10–35 °C vertical
• Storage temperature: −25–70 °C
• Relative humidity: 10–95 %, without condensation, in operation and storage
• Protection: IP20 with protective cover in place; pollution degree ≤ 2
• Altitude: 0–2000 m operating; 0–3000 m storage
• Shock resistance: 147 m/s² for 11 ms
• Vibration resistance: 3.5 mm at 5–8.4 Hz and 1 gn at 8.4–150 Hz
• Microbreak immunity: 10 ms
• ESD immunity: 8 kV air and 4 kV contact per EN/IEC 61000-4-2
• Field immunity: 10 V/m from 80 MHz to 1 GHz per EN/IEC 61000-4-3
• Magnetic field immunity: 30 A/m at 50/60 Hz per EN/IEC 61000-4-8
• Burst immunity: 2 kV on power lines and relay output; 1 kV on I/O and serial link
• Surge immunity: 2 kV common mode on AC lines; 1 kV on I/O and shielded cable
• Conducted RF immunity: 10 Vrms from 0.15 to 80 MHz per EN/IEC 61000-4-6
• Marine immunity: 3 Vrms from 0.1 to 80 MHz plus spot frequencies per LR, ABS, DNV, GL
• Emissions: EN/IEC 55011 class A radiated and conducted limits
• Standards: EN/IEC 60664-1, EN/IEC 61131-2, EN/IEC 61010-2-201
• Certifications: CE, ABS, CSA, CULus, LR, IACS E10, RCM, EAC, DNV-GL
• Sustainability: Green Premium product, RoHS compliant, REACh reference free of SVHC

Installation Guide

• Clip the TM221C16T onto a TH35-15 or TH35-7.5 rail per IEC 60715.
• Use the fixing kit when you mount the controller directly on a panel.
• Keep 50 mm clearance above and below the unit for free air flow.
• Wire the 24 V DC supply to the 3-terminal block and respect the polarity marks.
• Feed analogue signals through the 4-terminal connector and keep cable length under 1 m.
• Use shielded cable under 10 m for fast inputs and under 3 m for fast outputs.
• Route digital input and output cable up to 30 m with unshielded wire.
• Connect the programming terminal to the mini B USB 2.0 port.
• Insert an optional 2 GB SD card to store programs and recipes.
• Check that PWR and RUN LEDs turn green and the ERR LED stays off after start-up.

Package List

• 1 × TM221C16T logic controller
• 1 × removable screw terminal block for inputs
• 1 × removable screw terminal block for outputs
• 1 × 3-terminal block for the 24 V DC supply
• 1 × 4-terminal connector for analogue inputs
• 1 × protective cover for IP20 protection
• 1 × fixing kit for panel mounting
• 1 × quick installation guide

Warranty and Shipping

• We cover the TM221C16T with a 12-month warranty against manufacturing defects.
• We ship worldwide through FedEx, UPS and DHL.
• Orders placed before 15:00 Beijing time leave the warehouse the same working day.
• Express transit takes 3–7 business days depending on destination and customs clearance.
• Each controller ships in its original carton with foam protection and a shock sensor.
• You receive a tracking number by email once the carrier picks up the parcel.

FAQ

• Q: Can the TM221C16T drive a stepper motor directly?
  A: Yes, PTO mode drives 2 axes in pulse/direction at 100 kHz on the fast outputs.
• Q: How accurate are the two analogue inputs?
  A: They offer 10-bit resolution, 10 mV per step and ±1 % full-scale accuracy.
• Q: What happens when an output shorts to ground?
  A: Overload protection trips at 0.2 A and resets automatically after 1 second.
• Q: Does the controller keep its clock during a power cut?
  A: Yes, the BR2032 battery backs up the real-time clock for about 1 year at 25 °C.
• Q: Which marine approvals does this model carry?
  A: It holds ABS, LR, DNV-GL and RCM approvals for marine and industrial decks.
• Q: How do I request a quotation?
  A: Email sales@ubestplc.com or message +86 86 180 3000 5825 on WhatsApp.

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