Description
| Parameter | Specification Details |
| Product Name | Communication Interface / Logic Board |
| Model Number | LTC391AE01 |
| ABB Part Number | HIEE401782R0001 |
| Associated PN | HIEE410507P201 (Sub-assembly/Component) |
| System Compatibility | UNITROL 5000 / UNITROL 6000 Excitation Systems |
| Function | Data Link and Signal Processing for Static Excitation |
| Interface | High-speed Serial and Parallel Bus Connection |
| Operating Voltage | 24 VDC / ±15 VDC (Internal Logic) |
| Power Consumption | 8.5 Watts (Typical) |
| Operating Temp | 0 to +60 °C (32 to 140 °F) |
| Mounting | Rack-mount (Standard UNITROL Subrack) |
| Dimensions | Standard European Card Format |
The ABB LTC391AE01 (HIEE401782R0001) is a high-reliability communication and logic processing module specifically designed for the UNITROL series of excitation systems. In my experience, this board acts as the critical brain for power plant synchronization, managing the complex algorithms required to control the generator’s field current and maintain grid stability. The HIEE410507P201 sub-component ensures that high-speed data from the voltage regulator is distributed across the internal bus without latency, making this module a staple in heavy-duty utility and industrial power generation units where downtime is not an option.

ABB LTC391AE01 HIEE401782R0001 HIEE410507P201

ABB LTC391AE01 HIEE401782R0001 HIEE410507P201

ABB LTC391AE01 HIEE401782R0001 HIEE410507P201
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