Schneider Electric TM221CE24U Controller – M221 24 I/O Transistor NPN Ethernet

The TM221CE24U logic controller from Schneider Electric delivers compact machine control with built-in Ethernet. Engineers choose this M221 series model for fast counting, PWM, and PID loops in a DIN-rail form factor. It supports 14 discrete inputs, 10 transistor outputs, and 2 analogue inputs for flexible automation tasks.

Key Technical Specifications

• Brand: Schneider Electric
• Model: TM221CE24U
• Product range: Modicon M221
• Supply voltage: 24 V DC (limits 20.4–28.8 V)
• Discrete I/O: 24 total (14 inputs including 4 fast, 10 transistor outputs including 2 fast)
• Analogue inputs: 2 channels, 0–10 V, 10-bit resolution, 10 mV LSB
• Output current: 0.5 A per output, 5 A per common
• Fast output frequency: 100 kHz on Q0–Q1 (PWM/PLS mode)
• Counting inputs: 4 fast inputs (HSC mode up to 100 kHz, 32-bit)
• Memory: 256 kB application/data RAM, 256 kB internal variables, 256 kB flash backup
• Communication: Ethernet RJ45 (10/100), USB mini-B, serial RS232/RS485
• Operating temperature: -10…55 °C horizontal, -10…35 °C vertical
• Protection: IP20 with cover, pollution degree 2

Performance and Environment

• Execution time: 0.2 µs per Boolean instruction, 0.3 ms per 1K instructions.
• PID regulation: up to 14 simultaneous loops with adjustable parameters.
• Positioning: PTO 2 axes (pulse/direction) or 1 axis (CW/CCW) at 100 kHz.
• Input filtering: configurable 0 ms, 3 ms, or 12 ms for noise rejection.
• Immunity: 4 kV contact ESD, 10 V/m radiated fields, 2 kV fast transients.
• Shock resistance: 147 m/s² (11 ms), vibration 1 gn (8.4–150 Hz).
• Relative humidity: 10–95 % without condensation, operating altitude up to 2000 m.

Wiring and Installation Guide

• Mount on TH35-15 or TH35-7.5 rail, or use a panel fixing kit.
• Connect 24 V DC to the 3-terminal power block (20.4–28.8 V limits).
• Use removable screw terminal blocks for inputs and outputs.
• For fast inputs, keep shielded cable length within 10 m.
• For analogue inputs, use unshielded cable up to 1 m for best accuracy.
• Output wiring: unshielded cable up to 30 m; shielded cable up to 3 m for fast outputs.
• Observe 500 V AC insulation between I/O and internal logic.
• Maintain clearance for vertical installation to respect 35 °C maximum ambient.

Package Contents

• 1 × TM221CE24U logic controller
• 1 × set of removable screw terminal blocks (inputs and outputs)
• 1 × analogue input connector (4 terminals)
• 1 × power supply terminal block (3 terminals)
• 1 × quick start guide
• Shipping via FedEx, UPS, or DHL

Frequently Asked Questions

• Q: Can I expand the I/O beyond 24 points?
  A: Yes, you can add up to 7 expansion modules (transistor or relay output).
• Q: What is the analogue input resolution and accuracy?
  A: 10-bit resolution with ±1 % full-scale absolute accuracy error.
• Q: Does the controller support PID loops?
  A: Yes, it runs up to 14 simultaneous PID loops with adjustable settings.
• Q: How do I back up the application?
  A: Use the built-in 256 kB flash memory or an optional 2 GB SD card.
• Q: What is the response time for fast inputs?
  A: 5 µs turn-on and turn-off for terminals I0, I1, I6, and I7.
• Q: Can I use the Ethernet port for Modbus TCP?
  A: Yes, it supports Modbus TCP server/client/slave and Ethernet/IP adapter.
• Q: What battery maintains the real-time clock?
  A: A BR2032 lithium battery (non-rechargeable, 4-year life) with 1-year backup at 25 °C.

For technical support or pricing on the TM221CE24U controller, contact our engineering team. We ship worldwide with FedEx, UPS, and DHL options.

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