Product details

TM221ME16R – Modicon M221 Logic Controller

16 I/O | Relay outputs | Ethernet | In stock – ships in 12–24 h via FedEx, UPS, DHL

Product Overview

• TM221ME16R – compact PLC from Schneider Electric Modicon M221 series.
• Runs on 24 V DC with 8 digital inputs, 8 relay outputs, and 2 analog inputs (0…10 V).
• Built-in Ethernet and serial link for easy connection.
• Great for small machines, conveyors, and pumping control.

Technical Specifications

Power Supply
• Rated: 24 V DC (limits 20.4…28.8 V)
• Consumption: 4.3 W (CPU only) / 23.3 W (with max expansion)
Discrete I/O (total 16)
• 8 inputs – 24 V DC, sink/source, 7 mA
• 8 relay outputs – 2 A, 5…250 V AC / 5…125 V DC
Analog Inputs
• 2 channels, 0…10 V, 10-bit resolution
• Accuracy: ±1% full scale
Performance
• Fast input response: 5 µs
• Program memory: 256 kB RAM, backup via flash/SD card
• 0.3 ms per 1k instruction (event task)
Environment & Endurance
• Operation: –10…55 °C (horizontal) / –10…35 °C (vertical)
• Storage: –25…70 °C
• Humidity: 95% non‑condensing
• Vibration: 3.5 mm (5…8.4 Hz) / 1 gn (8.4…150 Hz)
• IP20 protection, pollution degree 2
Interference Immunity
• ESD: 4 kV contact / 8 kV air
• Surge: 2 kV common mode (AC power)
• Fast transients: 2 kV on I/O and relay lines

Communication & Compatibility

• Ethernet – 10/100BASE‑TX, Modbus TCP client/server, DHCP.
• Serial link – RS232/RS485, Modbus RTU/ASCII.
• USB – mini‑B for programming.
• Software – SoMachine Basic / EcoStruxure Machine Expert.
• Expandable – up to 7 I/O modules.

Certifications

• CE, CSA, cULus, ABS, LR, DNV‑GL, RCM, EAC.
• Compliant with EN/IEC 61131‑2, EN/IEC 61010‑2‑201.

Expert Review

“Reliable, fast, and easy to program. The relay outputs handle heavy loads, and Ethernet simplifies integration. Perfect for small automation cells.”

Manager’s Insight

“We keep this model in stock for quick replacements. Its wide temperature range and robust EMI protection make it ideal for harsh factory floors.”

Typical Applications

• Packaging lines – counting, filling, sealing.
• Conveyor belts – speed control and diverters.
• Pumping stations – level and pressure control.
• HVAC – damper actuators and fan control.
• Textile machinery – tension monitoring.

Frequently Asked Questions

Q: Can I use this PLC with 230 V AC?
A: No – it requires 24 V DC. Use an external power supply.
Q: How many analog inputs does it have?
A: Two, with 0…10 V range and 10‑bit resolution.
Q: What is the maximum relay switching current?
A: 2 A per relay (resistive load).
Experience‑based Q:
Q: My relay output fails to switch – what to check?
A: Ensure load is within 2 A and use a snubber for inductive loads to protect contacts.
Purchase guide Q:
Q: Which model is better – relay or transistor?
A: Relay (this one) suits AC loads and high voltage. Transistor is faster for DC servos.