Product Introduction
When you need a compact yet powerful controller for mid-range automation tasks, the Schneider Electric TM241CEC24R from the Modicon M241 family delivers reliable performance. This logic controller combines 24 mixed I/O points with relay and transistor outputs, plus built-in Ethernet and CANopen master capability. It handles high-speed counting, positioning, and real-time control in a single, space-saving unit.
Technical Specifications Breakdown
Power and Inputs
- Rated supply voltage: 100...240 V AC (limits 85…264 V)
- Discrete inputs: 14 total, including 8 fast inputs (IEC 61131-2 Type 1)
- Input logic: Sink or source, 24 V DC, 5 mA per input
- Fast input response: 50 µs turn-on, configurable filtering down to 1 µs
Outputs
- Relay outputs: 6 relay, rated 2 A at 5...125 V DC or 5...250 V AC
- Transistor outputs: 4 transistor (positive logic), 0.5 A at 24 V DC; 4 fast outputs support PTO/PWM/PLS up to 100 kHz
- Protection: Short-circuit and overload protection with automatic reset for transistor outputs; reverse polarity protection
Communication and Connectivity
- Ethernet: 10/100 Mbit/s RJ45, supports Modbus TCP, EtherNet/IP adapter, OPC UA server, web server
- CANopen: J1939 male SUB-D 9 connector, up to 63 slaves, selectable baud rates from 20 kbit/s to 1 Mbit/s
- Serial ports: RS232/RS485 on RJ45 (serial 1) and RS485 on removable terminal block (serial 2)
- USB: Mini B USB 2.0 at 480 Mbit/s
Memory and Performance
- System RAM: 64 MB; Flash backup: 128 MB for user programs
- SD card support: Up to 16 GB (optional)
- Execution time: 0.3 ms per 1 KInstruction for event/periodic tasks
- Real-time clock: Drift ≤60 s/month at 25°C; battery backup for 2 years at 25°C
Industry Applications
Packaging Machinery
With 4 fast outputs capable of 100 kHz pulse trains (PTO mode) and 4 high-speed counters (HSC) at 200 kHz, the TM241CEC24R excels in packaging lines requiring precise motion control and product counting. The CANopen master interface simplifies integration with servo drives and remote I/O blocks.
Material Handling Systems
In conveyor and sorting applications, the controller's 14 inputs (8 fast) handle sensor feedback at high speed, while relay outputs switch motors and actuators up to 2 A. The Ethernet port enables real-time data exchange with a central SCADA or MES system via Modbus TCP or OPC UA.
Building Automation
For HVAC, lighting, and access control, the TM241CEC24R provides reliable 24 V DC sensor power (400 mA) and supports both local and remote I/O expansion (up to 7 local or 14 remote modules). Its compact dimensions (150 x 90 x 95 mm) fit easily into small enclosures.
Installation and Setup Guidance
Mount the TM241CEC24R on a standard DIN rail (TH35-15 or TH35-7.5) or on a panel using the optional fixing kit. Use removable screw terminal blocks (pitch 5.08 mm) for all I/O and power connections. For fast inputs and outputs, keep shielded cable runs under 10 m (inputs) and 3 m (outputs) to maintain signal integrity. The controller operates in ambient temperatures from -10°C to 55°C (horizontal mounting) or 50°C (vertical).
Maintenance and Reliability
The TM241CEC24R is designed for long service life with a lithium BR2032 battery that lasts 4 years (backup time 2 years at 25°C). Regularly inspect the SD card slot and ensure the protective cover is in place to maintain IP20 rating. The controller's surge withstand (2 kV common mode on power lines) and immunity to fast transients (2 kV on power lines and relay outputs) ensure robust operation in industrial environments.
Compatibility and Integration
This controller integrates seamlessly with:
- Ethernet/IP: Adapter mode for Rockwell/Allen-Bradley environments
- Modbus TCP: Client/server for SCADA and HMI
- CANopen: Master with DR 303-1 and DS 301 V4.02 profile
- OPC UA server: For IIoT and data analytics platforms
- Web server: Built-in WebVisu and XWeb system for remote visualization
It also supports up to 16 EtherNet/IP devices and 8 Modbus servers simultaneously.
Selection Guide and Purchasing Advice
Before ordering the TM241CEC24R, verify your application's I/O count and output type requirements. If you need more than 24 I/O points, plan for expansion modules (up to 7 local or 14 remote). For applications requiring higher current switching, consider external relays. The controller includes a real-time clock and 128 MB flash memory for program backup. Contact SpareTechPLC for current availability and lifecycle status before placing your order.
Frequently Asked Questions
Q: Can the TM241CEC24R control servo drives directly?
A: Yes, the 4 fast transistor outputs support PTO (pulse train output) at up to 100 kHz, which can drive stepper or servo drives with pulse/direction signals. For CANopen-compatible drives, use the built-in CANopen master interface.
Q: What is the maximum number of remote I/O modules I can add?
A: You can connect up to 14 remote I/O expansion modules using the CANopen or Ethernet network, in addition to 7 local modules.
Q: Does the controller support web-based HMI?
A: Yes, it includes a built-in web server supporting WebVisu and XWeb system, allowing you to create and access HMI pages via a standard browser.
Q: What is the battery life and backup duration?
A: The BR2032 lithium battery lasts 4 years and provides backup for the real-time clock and SRAM data for 2 years at 25°C.
Q: Is the TM241CEC24R suitable for safety-critical applications?
A: This controller is not safety-rated (no SIL/ATEX certifications listed). For safety functions, use dedicated safety PLCs or relays.
