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ABB UAD142A01 3BHE012551R0001｜PC Board｜
1. Precise Armature Circuit Control (Core Function)
Supports armature bridge trigger control composed of 6-pulse or 12-pulse thyristor configurations, with trigger pulse phase accuracy of ≤ 0.1°. This enables stepless regulation of armature voltage and current, making it suitable for high-precision DC motor speed and torque control applications.
Features automatic CT ratio recognition (1:2500 / 1:4000), eliminating the need for manual configuration. Provides a current measurement accuracy of ±0.1% FS and a voltage measurement accuracy of ±0.2% FS, ensuring stable and consistent control performance.
2. Comprehensive Fault Protection and Diagnostic Functions
Hardware-Level Protection
Armature overvoltage protection (≥ 1200 VAC)
Overcurrent protection (fast shutdown at 150% of rated current)
Short-circuit protection
Thyristor overtemperature protection (PTC temperature ≥ 85°C alarm)
Residual current monitoring with alarm trigger at ≥ 5 mA
Software Diagnostics
Channel open-circuit detection
Trigger pulse loss detection
Communication interruption self-protection: in case of abnormal communication, the module automatically freezes the current output state to prevent unintended operations
Fault information is transmitted to the control system and supports remote fault-code query for maintenance and troubleshooting
3. Signal Acquisition and Data Exchange
Provides synchronous acquisition of 4 grid-side current channels and 2 armature voltage channels, with a data update cycle of ≤ 1 ms, delivering real-time feedback for closed-loop drive control.
Supports HART protocol extension (external HART module required), enabling data exchange with smart sensors, control valves, and other intelligent field devices—fully compatible with Industry 4.0 data-traceability requirements.
4. Modular and Redundant Design
Supports hot-swap capability, allowing module replacement without system shutdown—ideal for continuous production environments.
Supports dual-module redundancy (primary/backup mode); in case of a primary module failure, the system automatically switches to the backup module to ensure uninterrupted operation.
ABB UAD142A01 3BHE012551R0001｜PC Board｜
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By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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