Basler Electric 6965D05G01 – Excitation Control PCB Assembly

The Basler Electric 6965D05G01 is a high‑quality printed circuit board assembly that serves as a critical component in voltage regulator and static excitation systems. This board integrates power supply filtering, voltage sensing, error amplification, and gate‑pulse generation for thyristor firing, forming the heart of many Basler regulator products.

Circuitry and Function

The board features a multi‑section design: an input conditioning stage that accepts AC line voltage and current signals, a regulation loop that compares the measured voltage to a reference, and an output stage that produces phase‑controlled firing pulses. An onboard isolated power supply generates the necessary DC rails for analog and digital circuits. The 6965D05G01 is built with surface‑mount components for enhanced reliability and compactness.

• Input voltage: 120/240 V AC (auto‑sensing)

• Control inputs: voltage setpoint (potentiometer or remote signal)

• Output: gate pulses for up to 6 SCRs, isolated

• Protection: overvoltage, undervoltage, and phase‑loss detection

• LED indicators: power, regulation, and fault

• Dimensions: 200 x 150 mm (standard mounting holes)

• Operating temperature: –10 °C to +60 °C

Typical Usage

This board is often found in Basler’s SSR and DECS regulator families, where it handles the core regulation algorithm. It can be used in both new builds and as a replacement part for legacy systems. The 6965D05G01 is compatible with various SCR power stacks and provides stable firing angles over a wide range of load and frequency variations.

Installation and Servicing

Mounting is via standoff screws in a control panel. All connectors are keyed to prevent incorrect insertion. Field servicing is limited to replacing the board as a whole; no on‑board component adjustments are required, as calibration is factory‑set. The board’s conformal coating protects against moisture and airborne contaminants.

Dependability and Quality

Manufactured under ISO 9001 processes, each 6965D05G01 undergoes functional testing and burn‑in before shipment. Basler’s design ensures immunity to electrical noise and transient surges, conforming to IEC 61000‑4 standards. This control board is a reliable building block for maintaining stable generator voltage output.

In conclusion, the Basler Electric 6965D05G01 control board offers precise regulation and robust firing control, essential for the performance of static excitation systems.