Description
ABB AC-POW-4
I. Product Positioning
ABB AC-POW-4 is an industrial‑grade dedicated power supply board for inverters.It is mainly used to provide stable, low‑ripple DC power for control cards, IGBT drive modules, detection circuits, human‑machine interfaces, and supporting automation equipment of ABB ACS series low‑ and medium‑voltage inverters.It is widely suitable for variable‑frequency drive applications such as industrial fans, water pumps, compressors, rolling mills, and conveyors.It also serves highly demanding industrial sectors including metallurgy, power, chemical, building materials, paper, and municipal water treatment, where power supply reliability and anti‑interference performance are critical.As the core power supply unit of the inverter control system, it supports stable operation of the entire drive system.
This power board undertakes the core responsibilities of AC/DC power conversion, multi‑channel DC output regulation, power distribution, and fault protection for the inverter system.It accurately converts industrial AC power into multiple stable DC voltages required by the inverter control section, and features comprehensive protection including overvoltage, overcurrent, short‑circuit, overtemperature, and surge suppression.Unlike feeder protection devices, synchronization controllers, and pure communication modules, it focuses on dedicated power supply for drive control.It can be seamlessly embedded into ABB standard inverter cabinets and control architectures without additional auxiliary power supplies, greatly improving power supply reliability of the inverter system and reducing integration and maintenance costs.
II. Technical Parameters
| Item | Specification |
|---|---|
| Model | AC-POW-4 / AC-POW-4 MD |
| Order No. / Material Code | 42000553 |
| Equipment Type | Industrial‑grade dedicated power supply board for inverters, switching power supply module, core power supply component for ABB drive systems |
| Core Functions | High‑efficiency AC/DC conversion, multi‑channel regulated DC output, low‑ripple filtering, overvoltage / overcurrent / short‑circuit / overtemperature protection, EMC anti‑interference |
| Typical Input | 3‑phase / 1‑phase industrial AC power (200–480V AC, 50/60Hz wide‑range input, compatible with voltage fluctuations ±15%) |
| Typical Output | Multi‑channel DC output, including control‑level 24V DC (low ripple ≤ 50mVpp), auxiliary 5V/12V DC, meeting requirements of inverter control units and drive circuits |
| Power Efficiency | ≥ 90% at rated load, reducing heat generation and energy consumption |
| Protection Functions | Overvoltage Protection (OVP), Overcurrent Protection (OCP), Short‑circuit Protection (SCP), Overtemperature Protection (OTP), input surge suppression, reverse polarity protection |
| Anti‑Interference Performance | Built‑in multi‑stage EMC filter, compliant with IEC 61000‑6‑2 (industrial environment immunity), reducing interference from the inverter itself and external radiation |
| Operating Temperature | -20℃ ～ +60℃, humidity 5%–95% (non‑condensing) |
| Storage Temperature | -40℃ ～ +85℃ |
| Protection Class | IP20 (board‑level protection; must be installed in enclosed metal control cabinets) |
| Physical Dimensions | Standard inverter board size, matches mounting holes of ABB ACS series inverter cabinets, compact design to save cabinet space |
| Weight | Approx. 0.8–1.0kg (modular board, easy to install and replace) |
| Mounting | Rail / screw mounting, compatible with ABB standard control cabinet architecture; supports hot‑swap (on selected models, per manual) |
III. Core Functions
High‑Efficiency AC/DC Conversion and Low‑Ripple Output
It adopts mature phase‑shift full‑bridge or active‑clamp flyback topology to achieve high‑efficiency conversion from industrial AC power to multiple stable DC outputs, with conversion efficiency ≥ 90%.The output stage is equipped with multi‑stage LC filtering and high‑frequency decoupling circuits to keep output ripple at an extremely low level.This avoids voltage noise affecting the accuracy of inverter control chips and IGBT drive signals, ensuring stable speed control and torque output.
Comprehensive Fault Protection Mechanism
It integrates dual hardware‑level + software‑level protection:voltage spikes are quickly suppressed by clamping circuits under overvoltage;the main circuit is disconnected within milliseconds under overcurrent / short‑circuit;built‑in temperature sensors monitor power device temperatures in real time, with automatic derating or shutdown protection upon overtemperature.It also features input surge suppression and power reverse polarity protection, preventing damage to the power board and rear‑end control modules caused by on‑site wiring errors or grid fluctuations.
Strong Anti‑Interference and Industrial Environment Adaptability
Special EMC circuits and shielding layers are designed to counter electromagnetic interference generated by high‑frequency switching of inverters, complying with IEC 61000 series industrial immunity standards.It can resist external electromagnetic radiation and reduce its own interference to the inverter control bus and communication modules.With a wide operating temperature range (-20℃ ～ +60℃) and IP20 protection, it withstands harsh industrial conditions including dust, oil, and temperature fluctuations.
Seamless Adaptation and Rapid Integration
As an ABB original factory‑matched power board, its dimensions and interfaces fully match the control cabinets and backplanes of ACS series inverters.No additional drilling or adapters are needed; it can directly replace faulty power boards of the same model.It supports power status signal interaction with the inverter main control card.In case of failure, it automatically reports to the inverter panel or host system for quick troubleshooting.
Long Service Life and Low Maintenance Cost
IV. Applications
- Low‑ and Medium‑Voltage Inverter Drives: Used in ABB ACS800 / ACS580 series inverters to supply power for control units, IGBT drive modules, encoder interfaces, and operation panels. Suitable for variable‑speed control of fans, pumps, air compressors, injection molding machines, and other general machinery, improving energy savings and control accuracy.
- Metallurgical and Building Materials Production Lines: Provides power for inverters in rolling mills, belt conveyors, main drives of cement kilns, and brick production lines, withstanding high temperatures and dust to ensure uninterrupted production.
Municipal and Water Treatment: Supplies stable power for inverters of aeration fans, lift pumps, and sludge dewatering machines in wastewater treatment plants, adapting to humid and corrosive gas environments.
- Chemical and Petrochemical: Used in variable‑frequency drive systems of large compressors and reactor agitators. Installed in control cabinets outside hazardous areas, it provides anti‑interference, highly reliable power to ensure process safety.
- Paper and Textile: Suitable for multi‑drive synchronous control in paper machines and textile machinery. Low‑ripple power reduces speed fluctuations and improves product quality.
- Legacy Equipment Retrofit: As a spare part for ABB inverters, used to upgrade and replace power boards in old drive systems, extending the service life of the entire inverter system and avoiding equipment downtime caused by power failures.
