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Engineered for ABB Bailey INFI 90 Analog Signal Acquisition
This module converts analog field signals into digital values for the controller. It provides accurate measurement for the ABB Bailey NDSI01 unit. You will find this analog input card in Symphony INFI 90 systems. Unlike basic modules, this version supports eight independent input channels. It handles both voltage and current signals from field transmitters.
Technical Specifications & Physical Dimensions
We designed this analog input module for industrial measurement accuracy. The table below presents all verified technical specifications.
| Parameter | Specification |
|---|---|
| Physical Dimensions (W x H x D) | 160mm x 120mm x 50mm |
| Total Weight | 0.58 kg (580 grams) |
| Analog Input Channels | 8 differential inputs |
| Input Voltage Range | 0-10V, ±10V, 0-5V (selectable) |
| Input Current Range | 0-20mA, 4-20mA (selectable) |
| Resolution | 12 bits (4096 counts) |
| Scan Time | 200 milliseconds for all 8 channels |
| Operating Voltage | 24V DC (18V – 32V) |
Functional Architecture and Signal Conditioning
This module connects to transmitters, sensors, and field devices. It uses eight differential inputs for common-mode noise rejection. You can configure each channel independently for voltage or current. Moreover, the module includes programmable gain amplifiers on every input. These components scale weak signals for optimal 12-bit resolution. Consequently, the board delivers accurate process values to the INFI 90 controller.
Installation and Operational Guidelines
The ABB Bailey NDSI01 provides 1500V isolation between inputs and backplane. It consumes 150 mA at 24V DC during normal operation. You must set each channel’s input type using DIP switches. Always use shielded twisted-pair cables for analog signals longer than 30 meters. This practice reduces noise coupling into measurement circuits. Furthermore, the module supports loop power for 2-wire transmitters. This feature eliminates external power supplies for field devices.
Physical Characteristics and Environmental Limits
This analog input module has a rugged, industrial-grade plastic housing. Its substantial 0.58 kg weight reflects the eight-channel design quality. The layout follows ABB Bailey standard Symphony specifications. Therefore, it fits securely into any INFI 90 I/O rack. The module includes LED indicators for channel status. In addition, it maintains stable operation between 0°C and 60°C ambient temperature. You can store this unit safely between -25°C and 85°C.