TWDLCDA40DRF Overview
When your control system demands a compact yet powerful controller, the Schneider TWDLCDA40DRF delivers. This compact base controller from the Twido series integrates 24 digital inputs and 16 outputs in a single, space-saving unit. It operates on a 24 V DC supply, making it a perfect fit for modern industrial panels. The TWDLCDA40DRF is commercialised and ready to support your automation needs.
Key Technical Specifications
Understanding the exact capabilities of the TWDLCDA40DRF ensures you select the right controller for your application. Here are the critical specifications:
| Specification | Value |
|—|—|
| Supply Voltage | 24 V DC |
| Input Voltage | 24 V DC |
| Discrete Inputs | 24 |
| Discrete Outputs | 2 transistor, 14 relay |
| Program Memory | 3000 instructions |
| Real-time Clock | Yes, drift ≤ 30 s/month |
| Communication | Modbus/character mode master/slave RTU/ASCII (RS485) |
| Operating Temperature | 0…55 °C |
| Protection | Internal fuse, IP20 |
This controller supports up to 7 I/O expansion modules, allowing you to scale your system as needed. With a maximum I/O count of 264 (using HE-10 connectors), the TWDLCDA40DRF grows with your application.
Solving Your Control Challenges
Flexible Input Configuration
The TWDLCDA40DRF accepts both sink and source input logic, simplifying integration with various sensors and switches. Input voltage limits range from 20.4 to 26.4 V DC, ensuring stable operation even with fluctuating power supplies. The discrete input current varies from 7 mA to 11 mA depending on the input group, providing reliable signal detection.
Reliable Output Switching
With 2 transistor outputs for high-speed switching and 14 relay outputs for versatile load control, this controller handles mixed loads effortlessly. Relay outputs can switch 2 A at 30 V DC or 240 V AC, both resistive and inductive loads, with a mechanical durability of over 20 million cycles. This ensures long-lasting performance in demanding environments.
Built-in Communication
The integrated non-isolated serial link (RS485) supports Modbus RTU/ASCII master/slave protocols, enabling seamless connectivity to HMIs, drives, and other PLCs. The half-duplex communication at 38.4 kbit/s provides reliable data exchange for most industrial applications.
Real-World Applications
The TWDLCDA40DRF excels in various automation scenarios:
- Packaging Machinery: Control conveyor systems, counting inputs, and actuator outputs with precision. The high-speed counter inputs (up to 20 kHz on 2 channels) handle fast production lines.
- HVAC Systems: Manage fans, pumps, and dampers using the relay outputs. The built-in PID control simplifies temperature and pressure regulation.
- Material Handling: Coordinate sorting and routing operations. The compact size allows mounting in tight control panels.
Installation and Setup
Mounting the TWDLCDA40DRF is straightforward. You can install it on a 35 mm symmetrical DIN rail or a plate/panel using the optional fixing kit. The non-removable screw terminal block ensures secure wiring connections. Remember to maintain proper clearance for ventilation and follow the recommended operating temperature range of 0 to 55 °C.
Maintenance and Reliability
Designed for long service life, the TWDLCDA40DRF includes an internal RAM backup with a lithium battery that lasts up to 10 years. The real-time clock maintains accurate time for up to 30 days without power. Regularly inspect the unit for dust accumulation and ensure the ambient temperature stays within limits. With proper care, this controller provides years of trouble-free operation.
Compatibility and Integration
The TWDLCDA40DRF is part of the Schneider Twido family, ensuring compatibility with a wide range of expansion modules and accessories. Use the serial link to connect to Schneider drives, HMIs, or third-party devices supporting Modbus. The controller also supports memory cartridges for program backup and transfer.
Why Choose SpareTechPLC?
SpareTechPLC offers genuine Schneider parts with expert support. We understand that downtime costs money, so we stock the TWDLCDA40DRF for immediate shipment. Our team can help you verify compatibility and provide technical guidance. Contact us today to order or ask questions.
Frequently Asked Questions
What is the supply voltage for the TWDLCDA40DRF?
The TWDLCDA40DRF requires a 24 V DC supply, with an allowable range of 20.4 to 28.8 V DC.
How many inputs and outputs does this controller have?
It has 24 discrete inputs (24 V DC) and 16 discrete outputs: 2 transistor and 14 relay.
Can I expand the I/O count?
Yes, you can connect up to 7 I/O expansion modules, achieving a maximum of 264 I/O points with HE-10 connectors.
What communication protocols are supported?
The integrated serial link supports Modbus RTU/ASCII master/slave protocols via RS485.
Does the TWDLCDA40DRF have a real-time clock?
Yes, it includes a real-time clock with a drift of ≤30 seconds per month and a backup time of 30 days.
