ABB 3BHE021951R0124 KV C758 A124 High-Performance Control Board KVC758A124

1. Complete model identification

Board abbreviation: KV C758 A124

Official model: KVC758A124

Material ordering code: 3BHE021951R0124

Official full name: IPS DUAL VOLTAGE SUBPRINT (IPS dual voltage sub-printed board)

Supporting system: ABB ACS5000 water-cooled medium and high voltage inverter (IPS power unit supporting special board)

2. Product positioning and core functions

Dedicated signal conditioning board inside IPS power unit

It is installed inside the ACS5000 power module cavity and does not belong to the external control cabinet card. It provides integrated processing of voltage sampling, isolation conversion, pulse auxiliary power supply, and fault detection feedback for the IGCT power unit.

Four core functions

Dual high-voltage DC bus isolation sampling converts the high voltage on the power side into weak current signals and sends them to the main control board;

Photoelectric isolation drive pulse buffer amplification, isolation control loop and power main loop;

Real-time detection of unit overvoltage, undervoltage, and overcurrent hardware faults, and rapid IGCT blocking;

Built-in isolated auxiliary power supply supplies power to the gate drive and temperature sampling circuits in the unit.

Signal isolation level: 2.5kV photoelectric isolation to prevent high-voltage crosstalk from damaging the main control system

3. Electrical specifications

1. Working power supply

External input: DC24V ±20%

Static power consumption of the whole machine: ≤12W

Built-in Traco isolated DC-DC power supply, multiple isolated low-voltage outputs (±15V, +5V) for onboard circuit use

2. Sampling and signal channels

Dual DC bus voltage differential sampling, adapted to ACS5000 power unit DC bus;

Multiple digital fault DI inputs, pulse drive DO outputs;

Analog output accuracy: 0.5% FS, adaptive unit voltage closed-loop control;

Working frequency adapts to the inverter carrier: up to 3kHz.

3. Environment and Machinery

Size: 110mm × 60mm × 30mm, ultra-thin embedded small board, built-in power unit cavity;

Net weight: about 90g;

Protection: IP20, three-proof coating on the circuit board, suitable for high-humidity sealed cavity of water-cooled inverter;

Working temperature: -20℃ ~ +55℃ (horizontal installation); vertical installation upper limit + 40℃;

Storage temperature: -40℃ ~ +85℃;

Certification: CE IEC 61800 Electric Drive Standard