PLCs, Power Supplies & Others

This logic controller delivers reliable automation for small to medium-sized machinery. It integrates seamlessly into the Modicon M221 ecosystem for unified programming. The unit combines digital I/O, communication ports, and a real-time clock into one housing. Users can program logic sequences for conveyors, packaging lines, and simple robotics.

I/O Configuration and Channel Specifications

This controller features a fixed I/O configuration with both digital inputs and outputs. It provides 8 digital inputs operating at 24 V DC for sensor connectivity. The unit also includes 8 relay outputs rated at 2 A per channel for actuator control. Each relay output handles 250 V AC or 30 V DC loads for flexible switching. The inputs accept signals from 0 V to 30 V with configurable filtering.

Communication Interfaces and Networking

The TM221M16R includes an integrated serial port for programming and HMI connection. It features a RS-232/RS-485 combo port for flexible device communication. An Ethernet port supports TCP/IP networking for remote monitoring. The unit also supports Modbus RTU and Modbus TCP protocols natively. Additionally, users can connect up to 14 slaves on the serial network. This connectivity simplifies integration with drives, sensors, and operator panels.

Programming and Application Memory

This controller stores user programs in 256 KB of flash memory. Retain variables reside in 128 KB of non-volatile EEPROM for data persistence. The unit supports ladder logic and function block diagram programming languages. It executes 4,000 instructions per millisecond for responsive control loops. Consequently, the controller handles sequential logic and basic motion tasks effectively. The built-in real-time clock supports time-based scheduling and event logging.

Power Supply and Energy Efficiency

This logic controller accepts a 24 V DC power supply with ±20% tolerance. It draws approximately 150 mA under normal operating conditions. Power dissipation remains below 5 W for minimal cabinet heat generation. The unit includes reverse polarity protection for safe installation. Additionally, it withstands brief power interruptions up to 10 ms without resetting. This ride-through capability prevents nuisance shutdowns during grid fluctuations.

Mechanical Durability and Environmental Tolerance

The controller carries an IP20 rating for protection against solid objects. Its compact housing fits into standard electrical cabinets with limited space. The operating temperature ranges from 0 °C to 55 °C for reliable performance. Humidity tolerance spans 10% to 90% without condensation issues. Furthermore, the unit resists vibration up to 0.75 g from 10 to 57 Hz. This robust construction suits packaging, material handling, and food processing applications.

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