ABB PCD232A101
ABB PCD232A101 - Image 2

ABB PCD232A101

Product Brief:​ The PCD232A101 is a later-generation excitation processor in ABB’s Unitrol / AC 800PEC excitation family. Compared to PCD230A101 (which is processor-only, relying on separate termination units for analog/digital I/O), the PCD232A101 integrates the AVR processor plus onboard signal conditioning I/O​ (generator PT/VT inputs, CT inputs, field V/I feedback, binary I/O for breaker monitoring, raise/lower contacts) and the fiber-optic interface to the thyristor gate-pulse unit — all in one module/box. It is used in Unitrol 1040 compact excitation cubicles and in newer Unitrol 5000 builds where panel space is constrained.

Request Quote
Category: SKU: ABB PCD232A101

Description

ABB PCD232A101

  • Technical Specifications (similar to PCD230 but with integrated I/O):
    • Processor / Regulation: Same 100 µs current loop, 1 ms voltage loop; PSS, UEL/OEL, V/Hz limiters
    • Integrated Analog Inputs:
      • 3 × VT inputs (phase-to-phase or phase-to-neutral, 100 V / 110 V / 120 V rms secondary — jumper selectable)
      • 3 × CT inputs (1 A / 5 A selectable; burden ≤0.2 VA)
      • Field Voltage & Field Current feedback (via shunt or DCCT — 60 mV / 4–20 mA)
    • Integrated Digital I/O:
      • Typically 8–12 DI (24 V DC) for: Field Breaker Aux, 86-Lockout contact, Manual/Auto select, Raise/Lower contacts, E-Stop
      • 4–6 DO (relay or 24 V DC transistor) for: Alarm, Trip to field suppression contactor, Run/Ready LED drive
    • Gate-Pulse Interface: 100 Mbps fiber to thyristor GPU (up to 6-pulse or 12-pulse bridge)
    • Communication: Ethernet 10/100 Mbps (Modbus TCP, IEC 61850 optional), Profibus DP-V1, RS-232/485 for local service port
    • Supply: 24 V DC (18–32 V), typ. 200 W max with all I/O excited
    • Diagnostics: Built-in oscilloscope (soft scope), event log, LED bar graph for field current / terminal voltage
    • Mounting: 19″ rack panel or DIN-rail sub-enclosure in excitation cubicle
    • Operating Temp.: –20 °C to +60 °C
  • Functional Features / Application / Material / Working Principle / Installation / Precautions:​ Same AVR principles as PCD230A101 — key difference is integrated I/O termination​ — no separate analog termination unit needed (though external PT/CT fuses & test switches still required in cubicle wiring). Commissioning steps identical: OLF → limiter setup → close loop → synchronize.
    • Extra Precaution:​ Because I/O is onboard, verify jumper settings for VT (100 V vs 110 V vs 120 V) and CT (1 A vs 5 A) BEFORE energizing PT/CT secondaries​ — wrong jumper can saturate input circuits or give incorrect readings. Perform ratio check with secondary injection during commissioning.

Related products