Schneider TWDLCAA10DRF Twido Compact Base Controller

TWDLCAA10DRF Compact Base Controller – Product Introduction

The Schneider Electric TWDLCAA10DRF belongs to the trusted Twido series, offering a space-saving yet powerful solution for machine control and building automation. This base controller combines a robust power supply, flexible I/O configuration, and reliable communication protocols in one compact package.

Therefore, it serves as an excellent choice for original equipment manufacturers and system integrators who demand high performance in a limited footprint. Moreover, the TWDLCAA10DRF supports memory or real-time clock cartridges through its expansion slot, allowing you to customize its functionality based on your specific application requirements.

Key Technical Specifications

Power Supply and Input/Output
The controller accepts a wide supply range of 100 to 240V AC, with operational limits from 85V to 264V at 47–63 Hz. It draws a maximum of 30 VA at 264V and includes an internal fuse for power protection. The unit provides 6 discrete inputs rated at 24V DC, configurable for sink or source logic. Meanwhile, it delivers 4 relay outputs, each capable of switching up to 2A at both 240V AC and 30V DC loads. Notably, the relay contacts offer a mechanical durability of 20 million cycles and an electrical durability of 100,000 cycles.

Communication and Memory
For connectivity, the TWDLCAA10DRF integrates a non-isolated serial link via a mini DIN connector. This port supports Modbus RTU/ASCII in master/slave mode over RS485 half-duplex at speeds up to 38.4 kbit/s. In terms of memory, the unit includes internal RAM with 700 instructions capacity, 128 counters, 128 internal bits, 3,000 internal words, and 64 timers. A lithium battery backs up the data for up to 30 days, with a 10-year battery life and a 10-hour recharge time.

Counting and Adjustments
Furthermore, the TWDLCAA10DRF offers versatile counting capabilities: one 32-bit counter at 20,000 Hz and three 16-bit counters at 5,000 Hz. It also includes one analog adjustment point with a range of 0 to 1023, providing fine-tuning flexibility for your process parameters.

Mechanical and Environmental Ratings

Dimensions and Mounting
The controller measures 90 mm in width, 80 mm in height, and 70 mm in depth. It weighs only 0.23 kg net, making it lightweight and easy to install on a standard 35 mm DIN rail. Additionally, the unit uses non-removable screw terminal blocks for secure and reliable I/O connections.

Environmental Conditions
This Twido controller operates reliably in ambient temperatures from 0°C to 55°C and can be stored between -25°C and 70°C. It withstands relative humidity levels of 30% to 95% without condensation and carries an IP20 protection rating. For vibration, it tolerates 0.075 mm at 10–57 Hz and 1 gn at 57–150 Hz on DIN rail mounting. Shock resistance reaches 15 gn for 11 ms, ensuring durability in demanding industrial environments.

Installation Guidelines

First, mount the TWDLCAA10DRF securely onto a 35 mm symmetrical DIN rail or a flat panel using the optional fixing kit. Next, connect the AC power supply to the L and N terminals, ensuring the ground terminal is properly earthed. Then, wire your field devices to the input terminals (I0.0 to I0.5) and output relays (O0.0 to O0.3) according to the terminal descriptions provided in the user manual. For communication, use the mini DIN port to establish an RS485 network with Modbus RTU protocol. Finally, insert a memory or RTC cartridge into the dedicated slot if additional functionality is needed.

Packaging List

• 1 x Schneider TWDLCAA10DRF Compact Base Controller

• 1 x Product documentation and quick start guide

• The unit is shipped in its original factory packaging.

Shipping Method: FedEx, UPS, or DHL

Frequently Asked Questions (FAQ)

1. Can the TWDLCAA10DRF be expanded with additional I/O modules?
Yes, the TWDLCAA10DRF is extendable. You can connect compatible Twido expansion modules through the built-in expansion interface to increase your I/O count.

2. What type of memory cartridge does this controller support?
The unit accepts memory cartridges for program backup or real-time clock cartridges for time-stamping functions. These cartridges insert into the dedicated slot on the side of the base unit.

3. How do I connect this PLC to a Modbus network?
Use the mini DIN serial port to connect the TWDLCAA10DRF to an RS485 network. Configure it as a master or slave and select RTU or ASCII mode with baud rates up to 38.4 kbit/s.

4. What happens if the internal battery loses charge?
The lithium battery retains RAM data for up to 30 days. If the battery depletes, the internal RAM will lose its contents. The battery recharges automatically when the controller is powered on, taking about 10 hours for a full charge.

5. Is the TWDLCAA10DRF suitable for high-vibration environments?
Absolutely. Its vibration resistance of 1 gn at 57–150 Hz and shock resistance of 15 gn make it well-suited for machinery and equipment with moderate vibration levels.