DSTA002B 3BSE018317R1 ABB Passive Analog Termination And Connection Unit For Use With The DSAI 133A Analog Input Board
Engineered exclusively for the ABB Advant OCS system, the DSTA002B (3BSE018317R1) passive analog termination unit completely simplifies the interface between field devices and the DSAI 133A analog input board. It directly eliminates the need for active external signal conditioning components, reducing points of failure while tackling channel-to-channel crosstalk in high-density I/O panels. This highly reliable unit is the definitive choice for critical process industries requiring uninterrupted, noise-immune data logging from sensors in harsh electrical environments.
Engineer's Note
When servicing older ABB Advant control panels, field technicians often mistake signal dropouts for a faulty DSAI 133A board when the root cause is actually contact degradation or resistor wear on the termination unit. Upgrading to a clean, factory-certified
DSTA002B (3BSE018317R1) immediately stabilizes fluctuating 4-20mA loops. If you are operating in high-humidity or corrosive environments, we advise applying a light layer of electronics-grade contact cleaner to the system ribbon connector pins before clipping the unit onto the DIN rail to prevent micro-corrosion over long deployment cycles.
Frequently Asked Questions
Q: Does the DSTA002B termination unit provide onboard fuses for loop power protection?
A: The DSTA002B is fundamentally a passive termination card focusing on signal routing, filtering, and precision load resistors. Depending on your configuration with the DSAI 133A, loop fusing or external distribution blocks must be managed ahead of the module if individual channel galvanic isolation or short-circuit blow-protection is required by site safety standards.
Q: Can the DSTA002B be used with other analog input boards like the DSAI 130 or 140 series?
A: No. The internal track layout, pin configurations, and passive conditioning arrays of the 3BSE018317R1 are micro-engineered specifically to match the electrical and pinout footprint of the DSAI 133A board. Cross-matching with other sub-families will lead to pin assignment errors and can potentially damage the system ribbon cables.
Q: How does this passive unit manage high-frequency field noise on long sensor cable runs?
A: The DSTA002B incorporates onboard passive RC filtering circuits directly at the screw terminal input stage. This setup filters out high-frequency EMI and ambient grid hum before the analog signal passes through the ribbon cable to the analog-to-digital converters on the DSAI 133A board.
Project Case Study
During a 2025 control system life-extension project at a paper mill in Sweden, 45 units of the
ABB DSTA002B 3BSE018317R1 were deployed to refresh legacy marshalling cabinets. Connected directly to
DSAI 133A boards monitoring critical steam pressure and pulp density transmitters, these passive units replaced aging third-party interfaces. The mill successfully eliminated intermittent analog signal jitter, ensuring continuous, 24/7 uptime under demanding high-temperature industrial conditions.
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Our Leading Advantage Brands
• Bently Nevada: 3500 Systems, Proximitor sensors, and 3300 XL probes
• Honeywell: Experion PKS, TDC 3000, and FSC safety systems
• ABB: 800xA, Symphony Plus, and Bailey INFI 90 DCS
• Allen-Bradley: ControlLogix 1756 and legacy SLC 500 modules
• GE Vernova: Mark VI/VIe Speedtronic turbine control cards
• Triconex: Invensys/Schneider TMR emergency shutdown systems
The Amikon Benefit
100% Original | Factory Sealed | Lowest Lead Times
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