Twido TWDLMDA20DTK Base Controller – 12 Inputs, 8 Outputs, 9-Bit ADC

TWDLMDA20DTK – Twido Modular Base Controller

Compact 24 V DC controller with 20 discrete I/O. Integrates 12 inputs and 8 transistor outputs. Supports 4 expansion modules. Optimized for small to mid-size automation tasks.

Controller Highlights

• Supply voltage: 24 V DC (20.4…26.4 V).
• Discrete inputs: 12 (sink or source).
• Transistor outputs: 8 (source).
• Analogue input: 1 channel, 0…10 V, 9-bit resolution.
• Program memory: 3000 instructions.
• Integrated Modbus RTU/ASCII (RS485).

Technical Specifications

• Input current: 5 mA (I0.0–I0.1 / I0.6–I0.7); 7 mA (I0.2–I0.5 / I0.8–I0.11).
• Input impedance: 5700 Ω (I0.0–I0.1 / I0.6–I0.7); 4700 Ω (others).
• Filter time: 35–150 µs (varies by input and state).
• Output current: 0.36 A per channel; 1 A per common.
• Response time: 5 µs (Q0.0–Q0.1) / 300 µs (Q0.2–Q0.7).
• Protection: Overvoltage (39 V), internal fuse, residual voltage ≤1 V.
• Isolation: 1500 Vrms (channel to logic).
• Power consumption: ≤15 W (base + 4 expansions).

Environmental & Mechanical

• Operating temperature: 0…55 °C.
• Storage: -25…70 °C.
• Humidity: 30…95 % (non-condensing).
• IP20 protection (cabinet installation).
• Vibration: 0.075 mm / 1 gn (DIN rail); 1.6 mm / 4 gn (panel).
• Shock: 15 gn for 11 ms.

Connectivity & Expansion

• I/O connection: HE-10 connector, spring terminal, or screw block.
• Maximum I/O: 116 (spring) / 148 (HE-10) / 84 (screw).
• Expansion slots: 4 modules; 2 free slots for memory cartridge & RTC.
• Integrated serial link: mini DIN, RS485, Modbus RTU/ASCII.
• Counting inputs: 2×20 kHz (32-bit) + 2×5 kHz (16-bit).
• PWM/PLS outputs: 2 channels at 7 kHz.

Diagnostics & Status

• LED indicators: PWR, RUN, ERR, STAT, and per-channel I/O status.
• Built-in event processing and PID functions.
• Analogue adjustment: 1 point (0…1023).
• Battery-backed RAM: 30 days autonomy (lithium, 10-year life).

Certifications & Compliance

• UL, CSA certified.
• CE marked.
• Dielectric strength: 1500 V (I/O to earth), 500 V (supply to earth).
• Immunity to microbreaks: 10 ms.

Oiltech Controls Review – Expert Insight

This controller fits legacy Twido systems and new installations. The 9-bit analogue input and fast 5 µs outputs suit precise positioning. The 4-expansion limit allows flexible scaling. For retrofit projects, it directly replaces older Twido bases without rewiring.

Compatible Devices & Systems

• Twido modular I/O expansions (discrete, analogue, temperature).
• Modbus RTU networks – connect to HMIs, VFDs, and sensors.
• Legacy Modicon Quantum systems (via adapter).
• Small conveyor systems, packaging lines, and HVAC controls.

5 Professional FAQs

• Q: Can I use this controller with 12 V sensors?
  A: No – inputs require 24 V DC (20.4…26.4 V). Use level shifters or replace sensors.
• Q: How many expansion modules can I add?
  A: Maximum 4 modules. Total I/O depends on connector type (up to 148 points).
• Q: What is the real-time clock used for?
  A: Time-stamping events, scheduled tasks, and data logging. Requires optional cartridge.
• Q: Does it support floating-point math?
  A: No – internal RAM handles integers and double words only. Use external calculation if needed.
• Q: Which programming software works best?
  A: TwidoSuite or EcoStruxure Machine Expert. Both support all functions including PID and PWM.

Why Buy From Oiltech Controls?

• Over 15 years in industrial automation spares.
• Global shipping via FedEx, UPS, DHL – 24–28 hour dispatch.
• Tested surplus / refurbished with full 12-month warranty.
• Technical verification before every shipment.
• Expert support for obsolete control systems.

Contact Inquiries:
info@oiltechcontrols.com
| +86 158 8020 0923

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