Precision Analog Input for Twido Controllers
The TWDAMI2HT analog input module expands the Twido controller’s capabilities with two high-level input channels. This compact unit accepts both 0–10 V voltage signals and 4–20 mA current signals with 12-bit resolution . Consequently, it offers flexibility for various sensor types in industrial environments. The module requires a 24 V DC external supply and draws 50 mA at 5 V DC and 60 mA at 24 V DC . Its removable screw terminal block simplifies wiring and maintenance tasks.
Technical Specifications and Input Performance
The TWDAMI2HT delivers reliable analog signal acquisition with a 16 ms sampling duration per channel . The input impedance reaches ≥1 MΩ for voltage signals and 10 Ω for current signals. Measurement error stays within ±0.2% of full scale at 25°C, while the temperature coefficient remains at ±0.006% FS/°C . The module sustains 13 V for voltage inputs and 40 mA for current inputs without damage. Furthermore, the module provides 500 V AC dielectric strength between inputs and the supply circuit. This isolation ensures robust protection for sensitive control systems.
Physical Dimensions and Environmental Ratings
The TWDAMI2HT weighs only 0.085 kg, making it suitable for space-constrained control cabinets . Its IP20 protection rating covers standard indoor installations. The module operates reliably across a 0°C to 55°C ambient temperature range and withstands storage temperatures from -25°C to 70°C . Additionally, this module holds UL and CSA certifications, confirming its compliance with international safety standards.
| Parameter | Specification |
|---|---|
| Product Type | Analog input module |
| Input Channels | 2 |
| Input Types | 0–10 V (non-differential), 4–20 mA (differential) |
| Resolution | 12 bits |
| LSB Value (Voltage) | 2.5 mV |
| LSB Value (Current) | 4.8 µA |
| Input Impedance (Voltage) | ≥ 1,000,000 Ω |
| Input Impedance (Current) | 10 Ω |
| Sampling Duration | 16 ms per channel |
| Acquisition Period | 16 ms/channel + 1 controller cycle |
| Measurement Error | ±0.2% FS at 25°C |
| Temperature Coefficient | ±0.006% FS/°C |
| Repeat Accuracy | ±0.5% FS |
| Non-linearity | ±0.2% FS |
| Total Error | ±1% FS |
| Common Mode Rejection | -50 dB |
| Supply Voltage | 24 V DC (20.4–28.8 V limits) |
| Current Consumption | 50 mA at 5 V DC, 60 mA at 24 V DC |
| Dielectric Strength | 500 V (inputs to supply circuit) |
| Protection | Photocoupler isolation |
| Net Weight | 0.085 kg |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -25°C to 70°C |
| Protection Class | IP20 |
| Certifications | UL, CSA |
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 110 × 55 × 90 mm |
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