The TWDLMDA20DTK from Schneider Electric's Twido series delivers a modular and flexible control solution for small to medium automation systems. Operating on a 24 V DC supply, this base controller offers 20 discrete I/O points, comprising 12 digital inputs and 8 transistor outputs. The transistor outputs are sourcing type, making them ideal for high-speed switching applications. Notably, this model includes a built-in analog input with 9-bit resolution, enabling basic process monitoring without additional modules. Furthermore, the TWDLMDA20DTK supports PWM and PLS positioning functions, expanding its utility for motion-related tasks.
The TWDLMDA20DTK provides 12 discrete DC inputs with a voltage range of 20.4 to 26.4 V. These inputs are sink or source configurable, offering wiring flexibility. Inputs I0.0, I0.1, I0.6, and I0.7 draw 5 mA with an impedance of 5700 Ohms. Meanwhile, inputs I0.2 to I0.5 and I0.8 to I0.11 operate at 7 mA with a 4700 Ohm impedance. For outputs, the controller features 8 transistor outputs that are sourcing type. These outputs deliver 0.36 A per channel and 1 A per common, with a response time as fast as 5 µs on the first two channels (Q0.0 and Q0.1). Additionally, the outputs include overvoltage protection at 39 V.
A key feature of the TWDLMDA20DTK is its built-in analog input channel. This input accepts a 0 to 10 V signal and offers 9-bit resolution. The input impedance is 100,000 Ohms, ensuring minimal loading on the signal source. This analog capability allows the controller to monitor variables like temperature or pressure without requiring a separate analog expansion module. Consequently, this integration saves both cost and panel space.
This modular controller requires a rated supply voltage of 24 V DC, with acceptable limits from 20.4 to 26.4 V. The total power consumption for the base unit with 4 expansion modules is ≤ 15 W. For protection, an internal fuse safeguards the power supply. The inrush current for the power supply reaches up to 50 A, while the transistor outputs see a maximum inrush of 1 A. Moreover, the controller includes a lithium battery that maintains internal RAM data for 30 days with a 15-hour charging time and a 10-year battery life.
For connectivity, the TWDLMDA20DTK includes a non-isolated serial link via a mini DIN connector. This link supports Modbus RTU/ASCII protocol in both master and slave modes on an RS485 network, with data rates up to 38.4 kbit/s. The controller provides 3000 instructions of program memory, along with 128 timers and 128 counters. It also offers 256 internal bits and 3000 internal words for data storage. Furthermore, the unit includes event processing and PID functions, enhancing its capability for closed-loop control applications.
The TWDLMDA20DTK stands out with its built-in positioning functions. It supports two channels of PWM (Pulse Width Modulation) or PLS (Pulse Train) outputs at 7 kHz. For counting, the controller includes two 32-bit channels at 20,000 Hz and two 16-bit channels at 5,000 Hz. These features make the controller suitable for simple motion control tasks, such as stepper motor positioning or encoder counting.
The TWDLMDA20DTK features a compact and lightweight design. It measures 90 mm in width, 95 mm in height, and 70 mm in depth. The unit weighs only 0.14 kg, making it one of the lightest controllers in the Twido range. This small footprint is ideal for space-constrained control cabinets.
Designed for industrial environments, this controller operates within a temperature range of 0 to 55 °C. For storage, it can withstand -25 to 70 °C. The unit functions reliably in relative humidity from 30% to 95% (non-condensing). It carries an IP20 protection rating, suitable for installation inside enclosures. Additionally, it holds UL and CSA certifications, ensuring compliance with international safety standards.
The TWDLMDA20DTK demonstrates excellent resistance to mechanical stress. On DIN rail mounting, it withstands vibrations of 0.075 mm from 10 to 57 Hz and 1 gn from 57 to 150 Hz. With the optional fixing kit for panel mounting, it tolerates 1.6 mm from 2 to 25 Hz and 4 gn from 25 to 100 Hz. For shock, it handles 15 gn for 11 ms. These specifications ensure stable operation near heavy machinery or in mobile equipment.
Install the TWDLMDA20DTK on a standard 35 mm symmetrical DIN rail. Hook the top of the unit onto the rail and press the bottom until it snaps into place. For panel or plate mounting, use the optional fixing kit to secure the controller. The two free slots accommodate memory cartridges or a real-time clock cartridge for expanded functionality.
Connect the 24 V DC power supply to the designated terminals. Wire your 12 input devices and 8 transistor output loads according to the sink/source configuration. The I/O connections use an HE-10 connector, which supports high-density wiring. For the analog input, connect your 0 to 10 V signal source to the dedicated terminal. Finally, use the mini DIN connector for Modbus serial communication.
The TWDLMDA20DTK supports up to 4 I/O expansion modules. Attach these modules directly to the right side of the base controller. The system automatically detects each module upon power-up. With expansion, you can achieve up to 116 I/O points with spring terminal blocks, 148 points with HE-10 connectors, or 84 points with removable screw terminal blocks.
Your shipment includes the following items:
TWDLMDA20DTK modular base controller
HE-10 connector for I/O wiring
User manual and quick start guide
DIN rail mounting clips
Product identification label
Each unit is packaged in a single carton measuring 10.5 cm x 12.5 cm x 12.5 cm. The total package weight is approximately 0.14 kg. For all deliveries, we use trusted couriers including FedEx, UPS, and DHL to ensure safe and timely arrival.
1. What is the difference between the TWDLMDA20DTK and the TWDLCDA24DRF?
The TWDLMDA20DTK is a modular controller with 8 transistor outputs and an analog input, while the TWDLCDA24DRF is a compact controller with 10 relay outputs and no analog capability. The DTK offers faster switching speeds suitable for pulse applications.
2. Can the analog input be used for temperature sensing?
Yes, the 0 to 10 V analog input on the TWDLMDA20DTK can interface with temperature transmitters that provide a voltage output, allowing you to monitor process temperatures directly.
3. What is the purpose of the two free slots on this controller?
The two free slots accept a 32K memory cartridge for program storage and a real-time clock cartridge for time-stamping functions. These optional modules expand the controller's capabilities.
4. How do I configure the PWM outputs on the TWDLMDA20DTK?
Use the TwidoSoft programming software to configure the two PWM channels. You can set the frequency up to 7 kHz and adjust the duty cycle as needed for your application.
5. Is the TWDLMDA20DTK compatible with Modbus TCP/IP?
The base model does not include Ethernet. However, you can use the serial Modbus RTU connection via the mini DIN port for network communication, or add an external gateway for Modbus TCP/IP conversion.
| Brand Name | |
| Model No. | TWDLMDA20DTK |
| Product Type | Modular Base Controller |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
