The TWDLMDA20DRT is a versatile modular base controller belonging to Schneider Electric's trusted Twido range. It offers a balanced configuration with 20 discrete I/O points, including 12 digital inputs and 8 outputs. Specifically, the output configuration combines 6 robust relay outputs and 2 high-speed transistor outputs (source). This flexible design allows the TWDLMDA20DRT to handle both simple switching tasks and more dynamic control applications. Furthermore, its compact dimensions of 48 mm width make it ideal for space-constrained control cabinets.
The TWDLMDA20DRT operates on a rated supply voltage of 24 V DC with an acceptable range of 20.4 to 26.4V. Its 12 discrete inputs support both sink and source logic, providing installation flexibility. The input current varies between 5 mA and 7 mA depending on the specific input terminal. For outputs, the relay contacts (Q0.0 to Q0.5) can switch up to 2A per channel, while the transistor outputs (Q0.6 and Q0.7) deliver 0.36A each.
The TWDLMDA20DRT also includes built-in high-speed capabilities. It features two fast counting inputs operating at up to 20 kHz and two additional channels at 5 kHz. Moreover, the transistor outputs support PWM (Pulse Width Modulation) and PLS (Pulse) functions at 7 kHz, making it suitable for simple motion control tasks like stepper motor positioning. For analog control, the controller includes one 0-10V analog input with 9-bit resolution.
The TWDLMDA20DRT offers flexible memory options to suit varying application needs. Its base program memory supports 3000 instructions. However, you can expand this to 6000 instructions using a 64K memory cartridge. Additionally, the controller features an internal RAM for data storage, including 3000 internal words, 256 internal bits, 128 timers, and 128 counters.
In terms of expansion, the TWDLMDA20DRT supports up to 7 expansion modules. This allows you to increase the total I/O count to a maximum of 244 points. The system also includes two free slots for optional accessories, specifically a 32K or 64K memory cartridge and a real-time clock cartridge. Consequently, you can tailor the system to meet the exact requirements of your application.
The TWDLMDA20DRT provides a non-isolated serial link for communication. This mini DIN connection supports Modbus RTU/ASCII protocols in both master and slave modes. The RS485 interface operates at a maximum baud rate of 38.4 kbit/s, enabling reliable communication with other devices.
For programming and configuration, the TWDLMDA20DRT connects directly to a PC via this serial port. Additionally, the base controller includes status LEDs for clear visual diagnostics. These include LEDs for RUN, PWR, STAT, ERR, and individual I/O status indicators. This comprehensive signaling simplifies troubleshooting and system monitoring.
The TWDLMDA20DRT is designed for reliable operation in standard industrial environments. Its operating temperature range spans from 0 to 55 °C, with storage capabilities from -25 to 70°C. The unit also handles relative humidity from 30% to 95% without condensation.
Furthermore, the controller is built to withstand mechanical stress. It resists vibration up to 4 gn at 25-100 Hz on panel mounting and 1 gn at 57-150 Hz on DIN rail mounting. Shock resistance reaches 15 gn for 11 ms. With an IP20 protection rating, the TWDLMDA20DRT is suitable for installation in protected control enclosures.
Installing the TWDLMDA20DRT is a simple and quick process. The unit is designed for mounting on a standard 35mm symmetrical DIN rail. Alternatively, you can mount it on a panel using a dedicated fixing kit.
Follow these steps for proper installation:
First, secure the TWDLMDA20DRT onto the DIN rail or mounting panel using the integrated clips.
Next, connect the 24V DC power supply to the appropriate terminals (V- and V+).
Finally, wire your input and output devices to the removable screw terminal blocks for easy connection and maintenance.
When you purchase the TWDLMDA20DRT, the package includes the following items:
1x Schneider Electric TWDLMDA20DRT Modular Base Controller
Removable screw terminal blocks for I/O connections
Quick start guide
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1. Can the TWDLMDA20DRT be expanded with additional I/O modules?
Yes, the TWDLMDA20DRT supports up to 7 expansion modules, allowing you to increase the total I/O count to a maximum of 244 points.
2. What type of outputs does the TWDLMDA20DRT have?
The TWDLMDA20DRT features a mixed output configuration: 6 relay outputs (Q0.0 to Q0.5) and 2 solid-state transistor outputs (Q0.6 and Q0.7).
3. Does the TWDLMDA20DRT support analog signals?
Yes, the TWDLMDA20DRT includes one 0-10V analog input with 9-bit resolution. This allows you to connect analog sensors directly to the controller.
4. What is the maximum program memory of the TWDLMDA20DRT?
With the base configuration, the TWDLMDA20DRT has 3000 instructions. This can be expanded to 6000 instructions using an optional 64K memory cartridge.
5. What programming software is compatible with the TWDLMDA20DRT?
You can program the TWDLMDA20DRT using TwidoSuite software, which provides a user-friendly environment for developing, debugging, and commissioning your automation applications.
| Brand Name | |
| Model No. | TWDLMDA20DRT |
| Product Type | Modular Base Controller |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
