ABB DSDP170 57160001-ADF Isolated Analog Input Module

The ABB DSDP170 with material code 57160001-ADF is a high-density, isolated analog input module from the ABB S800 I/O series, integral to the Freelance and AC 800M Distributed Control System families. This module is designed for efficient acquisition of multiple analog process signals with high precision and isolation. The 57160001-ADF identifies the base hardware unit, with the functional type defined by a suffix letter specifying whether it is configured for standard current and voltage, RTD, or thermocouple inputs.

Technical Specifications

The DSDP170 series is characterized by its high channel density, providing 8 channels per module, offering a cost-effective and space-saving solution for multi-point analog monitoring. Each channel is individually isolated, ensuring signal integrity and preventing cross-talk in complex electrical environments. Accuracy is typically plus or minus 0.1 percent of reading or better at 25 degrees Celsius, with high-resolution A/D conversion. The module connects to a dedicated S800 terminal base unit tailored to its specific input type.

Variant Configurations

The DSDP170 model requires a suffix letter to determine its exact function and wiring. Common variants include DSDP170A which is an 8-channel universal analog input for 4-20 mA current and 0-10 V voltage signals. DSDP170D is an 8-channel RTD input for Pt100 and Pt1000 sensors. DSDP170K is an 8-channel thermocouple and millivolt input for various TC types including J, K, T, E, N, R, S, and B. Other variants may denote different channel counts or specialized functions. The material code 57160001-ADF remains consistent across these functional variants.

Isolation and Signal Integrity

The DSDP170 features channel-to-channel isolation and channel-to-system isolation, typically rated at 500 V AC or higher. This comprehensive isolation is a core feature for noise immunity in electrically harsh industrial environments, preventing ground loops and cross-channel interference from affecting measurement accuracy. The update rate is suitable for process monitoring applications, with all channels scanned within tens of milliseconds. The module is designed for integration into Freelance and AC 800M DCS families through the S800 I/O architecture.

Applications

The ABB DSDP170 57160001-ADF is deployed in process and manufacturing applications requiring high-density analog input acquisition. Typical applications include temperature monitoring in chemical reactors using RTD or thermocouple variants, pressure and flow measurement in pipeline monitoring using current and voltage variants, and level measurement in tank farm applications. The module is used in power generation for boiler monitoring, pharmaceutical manufacturing for process temperature control, and food processing for pasteurization and sterilization monitoring where multiple analog signals need to be acquired reliably in a compact form factor.