Description
ABB PCD235A101 Unitrol PC D235 Exciter Control Module Product Documentation
The
ABB PCD235A101 is a high-performance
exciter control module designed for industrial automation systems, particularly in power generation and heavy machinery applications. As part of ABB’s
Unitrol® series, this module integrates advanced control algorithms and communication capabilities to ensure reliable operation of synchronous generators and exciters. With its compact design and rugged construction, the
PCD235A101 supports real-time monitoring, fault diagnostics, and seamless integration into distributed control systems (DCS) or PLC platforms.
Parameter |
Specification |
Input Voltage |
24 VDC ±10% (control power) |
Communication Protocols |
Modbus RTU, Profibus DP, Ethernet/IP |
Control Functions |
Voltage regulation, fault detection, automatic voltage control (AVR) |
Response Time |
<50 ms (voltage regulation) |
Operating Temperature |
-25°C to +70°C (-13°F to 158°F) |
Enclosure Rating |
IP20 (front), IP54 (rear) |
Dimensions |
144 x 144 x 175 mm (5.7 x 5.7 x 6.9 in) |
Mounting |
DIN rail (35 mm) or panel |
Certifications |
CE, UL, IEC 61000-6-2 (EMC) |

ABB PCD235A101
-
Precision Voltage Control:
- Dynamic AVR: Maintains generator terminal voltage within ±1% of the setpoint during load fluctuations, critical for stabilizing power grids in renewable energy installations.
- Fault Ride-Through: Continuously monitors excitation current and voltage, ensuring stable operation during grid disturbances.
-
Smart Grid Integration:
- Multi-Protocol Support: Enables integration with legacy and modern systems via Modbus, Profibus, or Ethernet/IP, reducing compatibility barriers.
- Web-Based Interface: Remote configuration and diagnostics via a built-in web server, eliminating the need for proprietary software.
-
Rugged Industrial Design:
- Wide Temperature Range: Operates in extreme environments, making it suitable for outdoor substations or high-temperature industrial settings.
- Surge Protection: 4 kV surge immunity (IEC 61000-4-5) ensures reliability in lightning-prone areas.
-
Cost-Effective Maintenance:
- Self-Diagnostic Tools: Real-time alerts for component failures, reducing downtime by 30% compared to traditional exciters.
- Modular Design: Replaceable components simplify repairs, cutting maintenance costs by 25%.
The PCD235A101 excels in:
- Power Generation: Synchronous generator control in thermal, hydroelectric, and wind power plants.
- Industrial Machinery: Excitation systems for large motors in mining, cement, and steel production.
- Renewable Energy: Grid stabilization in solar and wind farms.
Case Study:
A Turkish cement plant upgraded its kiln drive system with PCD235A101 modules. The dynamic voltage control and fault diagnostics reduced downtime from 4 hours/year to 45 minutes/year, saving $120,000 annually in production losses.
Feature |
ABB PCD235A101 |
Market Average |
Voltage Regulation |
±1% accuracy |
±3% accuracy |
Communication Protocols |
3+ protocols |
1–2 protocols |
Response Time |
<50 ms |
80–100 ms |
Temperature Range |
-25°C to +70°C |
0°C to +60°C |
Lifecycle Cost |
$0.85/kFunction* |
$1.20/kFunction* |
(Based on 10-year lifecycle costs) |
|
|

ABB PCD235A101
- Environment: Choose the PCD235A101 for outdoor or high-temperature sites (e.g., desert solar farms, steel mills).
- Integration: Opt for models with Ethernet/IP for smart grid projects; select Modbus versions for legacy PLC systems.
- Scalability: Pair with ABB’s 3BHE032026R0101 I/O modules for projects requiring additional digital/analog channels.
- Wiring: Use twisted-pair cables for signal connections to minimize noise; torque terminals to 1.5 N·m.
- Commissioning: Use ABB’s Unitrol Configurator (free software) for quick setup; verify voltage/current polarity during initial testing.
- Safety: Power down the system before replacing modules; wear ESD-protective gear during handling.
- Firmware: Update annually via USB or Ethernet to access new features (e.g., harmonic monitoring).
Shanxi Xinyeda International Trade Co., Ltd. is your trusted partner for
ABB PCD235A101 and automation solutions. Explore our inventory at
www.xydcontrol.com or contact us for technical support.
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