Application Scenarios
At a natural gas compressor station in Norway, ABB A402KC modules were deployed to drive anti-surge control valves on centrifugal compressors. Each valve received a 4–20 mA signal from an A402KC channel, while HART enabled remote zero/span calibration during operation—eliminating shutdowns. The galvanic isolation prevented ground-induced drift during lightning storms, and System 800xA displayed real-time output current and HART device health on operator HMIs. Over five years, zero output-related failures occurred, validating the module’s robustness in harsh environments.
Technical Principles & Innovation
True 16-bit DACs: Deliver smooth control even for sensitive processes (e.g., pH dosing).
HART Passthrough: Enables use of ABB’s FieldCare or DeviceCare for predictive maintenance.
Hot-Swappable: Can be replaced under power in redundant configurations (with proper system design).
Deep 800xA Integration: Output scaling, engineering units, and alarm limits configured directly in Control Builder M.
Related Product Combinations
AC 800M CPU: PM864. PM865 (redundant)
I/O Base: TB820 (non-redundant), TB840A (redundant)
Terminal Unit: TP820 (for A402KC)
Cabling: TK801V015 (S800 I/O cable, 1.5 m)
Software: Control Builder M, Asset Optimization (for HART analytics)
Alternative Modules:
A401 – 8-channel non-isolated (lower cost, less critical apps)
A412 – 4-channel with higher load drive (up to 1000 Ω)
Installation & Maintenance
Mount TB820 baseplate on DIN rail.
Attach TP820 terminal unit to baseplate.
Insert A402KC into TP820 until it clicks.
Connect field wiring to TP820 spring terminals (labeled AO0–AO3).
Configure in Control Builder M: set range, enable HART, assign tags.
Diagnostics:
Green LED = Module OK
Red LED = Fault (overload, config error)
Detailed diagnostics visible in 800xA Plant Explorer
We supply new, factory-original ABB A402KC (3BSE013216R1) modules with full traceability, along with compatible terminal units, baseplates, and configuration support. All units are tested for output accuracy, HART response, and isolation integrity.
Summary
The ABB A402KC is a high-performance, isolated analog output module engineered for reliability in demanding industrial control applications. Its combination of precision, HART support, and seamless System 800xA integration makes it a trusted choice for driving critical final control elements—ensuring safe, efficient, and maintainable automation.
✅ Use when you need: Isolated 4–20 mA outputs, HART capability, redundancy, and full asset visibility in ABB 800xA.
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