Modicon M221 TM221C16R Logic Controller 16 I/O Schneider

Modicon M221 TM221C16R Compact Logic Controller

Product Introduction

The TM221C16R belongs to Schneider Electric's Modicon M221 series of compact logic controllers. This economical PLC is specifically designed for simple machine control and small automation projects. It provides 16 discrete I/O points on the base unit. Additionally, it includes 2 analog inputs for reading 0 to 10 V signals from sensors. The TM221C16R features 7 relay outputs capable of switching both AC and DC loads. Its small footprint and lightweight design make it ideal for space-constrained control cabinets. Furthermore, this controller supports up to 4 expansion modules for system growth.

Technical Specifications

Discrete I/O Configuration

The TM221C16R offers a total of 16 discrete I/O points. For inputs, it provides 9 discrete inputs conforming to IEC 61131-2 Type 1 standards. These inputs operate at 24 V DC and support both sink and source (positive/negative) logic configurations. This flexibility simplifies wiring with various sensor types. For outputs, the controller features 7 relay outputs. These normally-open relays can switch loads from 5 to 125 V DC and 5 to 250 V AC. Each output is rated at 2 A, providing sufficient capacity for most small actuators and contactors.

Analog Input Capabilities

The TM221C16R includes 2 analog inputs on the base unit. These inputs accept 0 to 10 V DC signals with a 10-bit resolution. The LSB value is 10 mV, providing adequate precision for many monitoring applications. The conversion time is 1 ms per channel plus one controller cycle time. For protection, the analog inputs can withstand overloads of +/- 30 V DC for up to 5 minutes and +/- 13 V DC continuously. Consequently, this controller can easily interface with potentiometers, pressure sensors, and temperature transmitters.

Power Supply Characteristics

This logic controller operates on a rated supply voltage of 100 to 240 V AC. The supply voltage limits range from 85 to 264 V AC, accommodating common power fluctuations. Network frequency is 50/60 Hz. The TM221C16R consumes up to 46 VA at full expansion and 31 VA without expansion modules. Its inrush current is limited to 40 A maximum. Additionally, the controller provides a 24 V DC sensor power supply at 250 mA. This feature eliminates the need for separate power supplies for connected sensors and small devices.

Memory and Processing Performance

The TM221C16R is equipped with 256 kB of RAM for user application and data storage. This memory can handle up to 10,000 instructions. Internal variables also use 256 kB of RAM. For data backup, the controller uses 256 kB of built-in flash memory. This ensures your application and data remain safe during power interruptions. An optional 2 GB SD card provides additional data storage capacity. Execution time is 0.3 ms per 1,000 instructions, with Boolean instructions executing in just 0.2 µs. This fast processing ensures responsive machine control.

Communication and Connectivity

The TM221C16R features multiple communication ports for flexible integration. A Mini B USB 2.0 port allows direct connection to a programming terminal. For serial communications, it offers two non-isolated serial links. Serial 1 uses an RJ45 connector with RS485 interface. Serial 2 uses an RJ45 connector with RS232/RS485 interface. Both ports support Modbus RTU/ASCII protocols. The USB port communicates via USB protocol and SoMachine-Network. The transmission rate reaches 115.2 kbit/s for serial and 480 Mbit/s for USB connections. This connectivity enables easy connection to HMIs, drives, and other Modbus devices.

Real-Time Clock and PID Control

The TM221C16R includes a built-in real-time clock with a drift of less than 30 seconds per month at 25 °C. This feature enables time-stamped data logging and scheduled operations. Furthermore, the controller supports adjustable PID regulation. It can handle up to 14 simultaneous PID loops, making it suitable for temperature, pressure, and flow control applications. These advanced features are uncommon in controllers at this price point.

High-Speed Counting Function

This logic controller includes 4 fast inputs capable of high-speed counting (HSC) mode. These inputs support a counting frequency of 100 kHz and a 32-bit counting capacity. They can operate in single-phase, dual-phase (pulse/direction), or dual-phase (quadrature) modes. Additionally, they function as frequency meters. Consequently, the TM221C16R can handle encoder feedback, flow measurement, and position tracking tasks. The fast inputs also have configurable filtering times of 0 ms, 3 ms, or 12 ms for noise immunity.

Mechanical and Environmental Parameters

The TM221C16R is designed for reliable operation in various environments. Its IP20 protection rating makes it suitable for control panel installation. The controller measures 90 mm in height, 70 mm in depth, and 95 mm in width. It weighs just 0.346 kg, facilitating easy mounting. For mounting, it supports TH35-7.5 and TH35-15 DIN rails or panel mounting with an optional fixing kit. Operating temperature ranges from -10 to 55 °C for horizontal installation and -10 to 35 °C for vertical installation. Storage temperature ranges from -25 to 70 °C. Relative humidity tolerance is 10 to 95% without condensation. Vibration resistance is 3.5 mm at 5 to 8.4 Hz and 1 gn at 8.4 to 150 Hz. Shock resistance is 98 m/s² for 11 ms. This controller is certified with CE, CSA, CULus, ABS, LR, DNV-GL, and IACS E10 approvals.

Installation Guide

Installing the TM221C16R is a straightforward process. First, mount the unit on a DIN rail or panel using appropriate hardware. Ensure adequate space for ventilation and cable routing. Next, connect the AC power supply to the designated terminals, observing the 85 to 264 V AC range. After that, wire your discrete inputs and outputs according to your application's schematic. For the analog inputs, use shielded cables and keep distances under 1 meter to maintain signal integrity. Connect the USB or serial ports for programming and communication. Finally, download your application using Schneider Electric's SoMachine software. Always follow local electrical safety standards during installation.

Packaging List

• 1 x Modicon M221 TM221C16R logic controller unit

• 1 x Product quick start guide

• 1 x Removable screw terminal block for inputs

• 1 x Removable screw terminal block for outputs

• 1 x DIN rail mounting clip

Shipping Information

All orders are dispatched using premium global couriers. Your TM221C16R will be shipped via FedEx, UPS, or DHL. This ensures reliable, trackable delivery to your location.

Frequently Asked Questions (FAQ)

1. What is the maximum number of expansion modules for this controller?
   The TM221C16R supports up to 4 expansion modules for transistor or relay outputs, allowing system growth.

2. Does this PLC include analog inputs?
   Yes, the TM221C16R features 2 analog inputs accepting 0 to 10 V signals with 10-bit resolution.

3. Can this controller handle high-speed counting?
   Yes, this logic controller includes 4 fast inputs supporting HSC mode at 100 kHz with 32-bit capacity.

4. What communication protocols does this unit support?
   The TM221C16R supports Modbus RTU/ASCII on RS232/RS485 ports and USB protocol via the Mini B port.

5. What is the operating temperature range for this controller?
   The TM221C16R operates from -10 to 55 °C in horizontal installation and -10 to 35 °C in vertical installation.