The HE693ADC409 is a high-precision Millivolt Input Module designed for seamless integration with PLC control systems. By enabling direct connection of millivolt-level signals—such as bridged strain gages and load cells—this module eliminates the requirement for external transducers or signal conditioners. Engineered for demanding industrial environments including process automation, weighing systems, and manufacturing, the unit performs high-speed analog-to-digital conversion with 14-bit resolution. The module features integrated digital filtering to maintain signal integrity in electrically noisy settings, significantly reducing instrumentation errors and preventing costly system downtime.
The module operates through four independent channels, each capable of configurable input ranges at +/- 25 mVdc, +/- 50 mVdc, or +/- 100 mVdc. Configuration is performed directly via software or a Hand-Held Programmer, allowing for rapid deployment. Internally, the device utilizes an integrating A/D converter to ensure high noise rejection. The architecture supports a wide common-mode range of +/- 12 Vdc, ensuring stability during differential signal measurement. Connectivity is managed through a field-removable 20-pin terminal strip, which simplifies maintenance and ensures rapid module replacement without the need to disconnect permanent field wiring.
| Model | HE693ADC409 |
| Channels | 4 |
| Input Ranges | +/- 25 mVdc, +/- 50 mVdc, +/- 100 mVdc |
| Resolution | 3 microV, 6 microV, 9 microV (selectable) |
| A/D Conversion | Integrating |
| Update Rate | 35 channels per second |
| Input Impedance | > 20 Mohms |
| Max Safe Overload | +/- 35 Vdc |
| Common Mode Range | +/- 12 Vdc |
| Operating Temperature | 0 to 60 degC |
| Power Consumption | 100 mA at 5 Vdc |
| Relative Humidity | 5% to 95% non-condensing |
This module is specifically designed for low-level millivolt signals, making it ideal for direct connection to strain gages, load cells, and other bridge-type transducers without the need for external signal conditioning.
The module is configured via software or a compatible Hand-Held Programmer, allowing for easy selection of input ranges and operational parameters.
The module draws its operating power directly from the PLC backplane (100 mA at 5 Vdc).
Nuestra línea de producción se paró debido a un monitor Bently Nevada defectuoso. Lo encontramos en stock aquí y lo enviaron por DHL de inmediato. Volvió a funcionar en 48 horas, lo que realmente salvó nuestra planta.
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