TM221C40R Modicon M221 Logic Controller — 40 I/O Relay Output, 100-240 V AC

The TM221C40R from Schneider Electric is a Modicon M221 logic controller built for panel builders and machine integrators. It runs on 100 to 240 V AC mains power and delivers 40 discrete I/O points. The relay outputs switch both AC and DC loads directly, so many projects skip interposing relays. Engineers pick the TM221C40R for its built-in analog inputs, fast counting channels, and seven-module expansion headroom.

Summary

• The TM221C40R offers 40 discrete I/O with 24 inputs and 16 relay outputs.
• It accepts 100 to 240 V AC supply and tolerates 85 to 264 V mains swings.
• Two analog inputs measure 0 to 10 V with 10-bit resolution and 10 mV steps.
• Four fast inputs run HSC counting at 100 kHz with 32-bit capacity.
• The controller supports up to 7 relay output expansion modules.

Top Selling Points

• Relay outputs switch 2 A at 5 to 125 V DC and 5 to 250 V AC without external relays.
• Mechanical relay life reaches 20 million cycles for long service intervals.
• Built-in 24 V DC sensor supply delivers 250 mA for field devices.
• Seven expansion modules extend I/O far beyond the base 40 points.
• Adjustable PID control handles up to 14 simultaneous loops.
• A real-time clock with 30 s/month drift keeps event logs accurate.
• The unit survives 10 ms microbreaks without restarting.
• Marine-grade EMC compliance covers LR, ABS, DNV, and GL standards.

Core Technical Specifications

• Brand: Schneider Electric
• Model: TM221C40R
• Product Range: Modicon M221 logic controller
• Rated Supply Voltage: 100 to 240 V AC, 50/60 Hz
• Supply Limits: 85 to 264 V AC
• Inrush Current: 40 A or less
• Power Consumption: 37 VA without expansion; 67 VA with maximum expansion
• Discrete I/O Count: 40 points total
• Discrete Inputs: 24 inputs, type 1 per IEC 61131-2, sink or source
• Input Voltage: 24 V DC, with state 1 at 15 V or above and state 0 at 5 V or below
• Input Current: 7 mA standard; 5 mA fast input
• Input Impedance: 3.4 kOhm standard; 4.9 kOhm fast; 100 kOhm analog
• Analog Inputs: 2 channels, 0 to 10 V range, 10-bit resolution
• Analog Accuracy: +/- 1 % of full scale; LSB value 10 mV
• Analog Overload: +/- 30 V DC for 5 minutes; +/- 13 V DC continuous
• Conversion Time: 1 ms per channel plus one controller cycle
• Discrete Outputs: 16 relay, normally open
• Output Current: 2 A per point; 7 A per common terminal
• Output Voltage Range: 5 to 125 V DC and 5 to 250 V AC
• Response Time: 5 µs turn-on for fast inputs; 10 ms for relay outputs
• Filtering: Configurable at 0 ms, 3 ms, or 12 ms
• Switching Frequency: 20 operations per minute at maximum load
• Minimum Load: 1 mA at 5 V DC for relay contacts
• Memory: 256 kB application RAM; 256 kB internal variables; 256 kB flash backup
• Data Storage: Optional 2 GB SD card
• Battery: BR2032 lithium, 4-year life, 1-year backup at 25 °C
• Execution Speed: 0.2 µs per Boolean instruction; 0.3 ms per 1 K instruction
• Object Areas: 512 %M bits, 8000 %MW words, 512 %KW words, 255 timers, 255 counters
• Counting: 4 HSC channels at 100 kHz, 32-bit, with A/B, pulse/direction, and single-phase modes

Connectivity Tree

• Programming port
  • Mini B USB 2.0 at 480 Mbit/s
  • SoMachine-Network protocol support
• Serial link 1
  • RJ45 connector with RS485 interface
  • Modbus master/slave RTU/ASCII
  • 1.2 to 115.2 kbit/s, 15 m bus length
• Serial link 2
  • RJ45 connector with RS232/RS485 interface
  • 1.2 to 115.2 kbit/s, 3 m bus length on RS232
  • 5 V at 200 mA serial link supply
• Status LEDs
  • PWR, RUN, ERR, SD, BAT, SL1, SL2
  • One green LED per I/O channel

Environmental and Immunity Data

• Operating temperature spans -10 to 55 °C for horizontal mounting.
• Vertical mounting narrows the range to -10 to 35 °C.
• Storage temperature spans -25 to 70 °C with 10 to 95 % humidity.
• Electrostatic discharge immunity reaches 8 kV air and 4 kV contact.
• Radiated field immunity holds 10 V/m from 80 MHz to 1 GHz.
• Magnetic field immunity reaches 30 A/m at 50/60 Hz.
• Fast transient immunity reaches 2 kV on power lines and relay outputs.
• Surge withstand reaches 2 kV common mode on AC lines and relay outputs.
• Conducted disturbance immunity reaches 10 Vrms from 0.15 to 80 MHz.
• Shock resistance reaches 98 m/s² over an 11 ms wave.
• Vibration resistance reaches 3.5 mm at 5 to 8.4 Hz and 1 gn at 8.4 to 150 Hz.
• Insulation between output and internal logic reaches 2300 V AC.
• Insulation between supply and ground reaches 1500 V AC.
• The unit works at altitudes up to 2000 m and stores up to 3000 m.
• Pollution degree stays at 2 or lower with IP20 protection.

Installation Guide

• Clip the controller onto a TH35-15 or TH35-7.5 rail per IEC 60715.
• Use the fixing kit for plate or panel mounting when rails are absent.
• Feed 100 to 240 V AC into the 3-terminal power block.
• Wire analog inputs through the 4-terminal connector with 1 m maximum cable.
• Keep digital input cable under 30 m and fast input cable under 10 m shielded.
• Limit output cable runs to 30 m unshielded to reduce noise pickup.
• Respect the 2300 V AC isolation boundary between outputs and logic.
• Insert the BR2032 battery to keep application data during outages.
• Add a 2 GB SD card for recipe and log storage.
• Check the 40 A inrush current against your breaker curve.
• Allow 37 VA minimum panel thermal budget without expansion.

Package List

• 1 x TM221C40R logic controller unit
• 1 x removable screw terminal block for inputs
• 1 x removable screw terminal block for outputs
• 1 x 3-terminal block for AC power supply
• 1 x 4-terminal connector for analog inputs
• 1 x BR2032 lithium battery
• 1 x protective cover for IP20 rating
• 1 x installation reference sheet

Shipping and Warranty

• We ship worldwide through FedEx, UPS, and DHL express services.
• Orders leave our warehouse within 1 to 2 business days.
• Tracking details arrive by email once the carrier scans the parcel.
• Each unit carries a 12-month warranty against manufacturing defects.
• Packing weight is about 0.456 kg per unit in a compact carton.

FAQ

• Q: Can the relay outputs drive a 240 V AC contactor coil?
  A: Yes, each relay switches 2 A at up to 250 V AC, which suits most contactor coils.
• Q: How many expansion modules can I attach?
  A: You can add up to 7 relay output expansion modules to the base unit.
• Q: Do the analog inputs need an external supply?
  A: No, the controller provides a 24 V DC sensor supply at 250 mA.
• Q: What happens during a short mains dip?
  A: The controller rides through 10 ms microbreaks without a restart or data loss.
• Q: Which counting modes do the fast inputs support?
  A: They support A/B quadrature, pulse/direction, and single-phase modes at 100 kHz.

Order Information

• Ask our team for a quotation on the TM221C40R today.
• We confirm stock, lead time, and freight cost within one business day.
• Bundle expansion modules and SD cards into a single shipment.

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