The ABB 3BSE018311R1 DSTA171 is a high-density Digital Input/Output module designed for the Advant S800 I/O system. This module serves as a versatile interface for distributed control systems, allowing for the simultaneous management of discrete input signals and output commands. It is engineered for high reliability in demanding industrial environments, providing a compact solution for interfacing with field switches, sensors, and actuators.
For availability or technical support, please visit our 3BSE018311R1 DSTA171 contact page.
Technical Description and Parameters
The DSTA171 module is part of the S800 I/O family and communicates with the controller via the ModuleBus. It features built-in self-diagnostics to ensure signal integrity and hardware health.
- Module Type: Digital Input/Output Module
- Series: Advant S800 I/O
- Channels: 16 Channels (Configurable/Shared)
- Voltage Rating: 24V DC
- Input Impedance: 3.5 kΩ (Typical)
- Output Current: 0.5A per channel (Short-circuit proof)
- Isolation: Galvanic isolation between field and logic
- Power Consumption: 50mA from 24V DC ModuleBus
Product Datasheet Specifications
- Dimensions: 119 mm x 45 mm x 102 mm
- Weight: 0.25 kg (0.55 lbs)
- Country of Origin: Estonia / Sweden
- Mounting: DIN Rail via Terminal Base (MTU)
- Operating Temperature: 0°C to +55°C
Application Fields
The DSTA171 is frequently utilized in large-scale automation architectures:
- Power Generation: Handling status feedback and control commands for auxiliary equipment.
- Oil & Gas: Interfacing with pneumatic valve solenoids and limit switches.
- Water Management: Managing pump motor starters and float level switches.
- Manufacturing: Controlling localized conveyor segments and pneumatic cylinders.

Product Instructions for Use
- Terminal Base Selection: The DSTA171 must be plugged into a compatible Module Termination Unit (MTU), such as the TU810 or TU812, which facilitates field wiring.
- Module Installation: Align the module with the MTU slot and press firmly until the locking mechanism clicks. This can be performed while the system is powered (Hot-Swap).
- Wiring: Connect 24V DC field power to the MTU. Ensure that inductive loads (like solenoids) have appropriate suppression diodes to prevent back-EMF interference.
- Addressing: The module address is determined by its position on the ModuleBus. Verify that the I/O station configuration in the Control Builder software matches the physical layout.
Q&A: Frequently Asked Questions
Q: Can I use all 16 channels as outputs simultaneously? A: Yes, the module is designed to handle the thermal load of all channels being active, provided the total current stays within the limits of the power supply feeding the MTU.
Q: What do the front panel LEDs indicate? A: The “Run” LED (Green) indicates the module is operational. The “Fault” LED (Red) indicates an internal failure or ModuleBus communication error. Individual channel LEDs indicate the logical state of the I/O.
Q: Is the DSTA171 compatible with the AC 800M controller? A: Absolutely. It is a standard I/O component for the AC 800M system when using S800 I/O stations.
Related Product News
ABB has recently reinforced its commitment to the S800 I/O range, introducing enhanced diagnostics tools within the 800xA 6.1.1 software suite that provide deeper insights into the health of DSTA modules. This includes “Predictive Health” monitoring, which can detect degrading field loops before they cause a system trip. As part of the 2026 sustainability initiative, ABB has also optimized the manufacturing process for the 3BSE018311R1 series to reduce its carbon footprint, ensuring that legacy support for Advant systems aligns with modern environmental standards.
