ACS550-01-087A-4 ABB Frequency Converter 87A 380V IP54 45KW 3P

ACS550-01-087A-4 ABB Frequency Converter 87A 380V IP54 45KW 3P

1.Overview of the ACS550-01-087A-4 ABB

The ABB ACS550-01-087A-4 is a wall-mounted, low-voltage, general-purpose inverter with a rated power of 45 kW (rated output current of 87 A at 400 V). It is designed for square-torque loads such as fans, pumps, compressors, and conveyors. It utilizes dual vector control and optimized V/F modes. Built-in application macros such as PID, multi-pump cycling, sleep/wake-up, and flow compensation enable one-click commissioning of pumps. It comes standard with Modbus RTU and optional fieldbus support such as PROFIBUS, CANopen, and EtherCAT, enabling seamless integration with ABB PLCs and DCS systems.

The entire unit boasts an IP21 protection rating (IP54 kit optional). Its reinforced coated circuit boards and independent cooling ducts ensure no derating at 50°C. A built-in Class C3 EMC filter and DC reactor suppress harmonics to a THDi ≤ 48%, meeting IEC61000-3-12 requirements. A standard multi-language keypad with backlight supports parameter copying and fault snapshots, allowing maintenance personnel to complete a backup unit switchover within 1 minute.

In terms of hardware, the ACS550-01-087A-4 offers a three-phase 380–480 V ±10% input and a 0–500 Hz output. It boasts an overload capacity of 110% for 1 minute every 10 minutes and a starting torque of 160% at 0.5 Hz, ensuring smooth starting under heavy loads. A built-in braking unit supports a 30 Ω external resistor for rapid braking. All terminals utilize spring-loaded terminals, saving 30% wiring time. Balancing safety and energy efficiency: Standard STO (Safe Torque Off) SIL3/PL e terminals meet EN 60204-1 Stop Category 0 without an additional contactor. An integrated energy efficiency calculator displays real-time power savings and CO₂ emissions reductions, helping users track energy savings. Measuring 600 × 300 × 285 mm and weighing 22 kg, the product supports side-by-side or wall-mount installation, offering front-facing maintenance. Networking of 0.2–200 kW units of the same series is possible with only 50 mm of side clearance.

2.Core Features:

1. Core Specifications
Order Number/Model: ACS550-01-087A-4
Applicable Motor Power: 45 kW (General Duty) / 37 kW (Heavy Duty HD)
Rated Output Current: 87 A (ND) / 72 A (HD)
Input Power Supply: 3 x 380–480 V ±10%, 50/60 Hz
Output Frequency: 0–500 Hz
Overload Capacity: 110% of rated current for 1 min / 10 min (ND); 150% for 1 min (HD)
Protection Rating: IP21 (standard); IP54 kit available as an option
Cooling: Forced air cooling, built-in temperature-controlled fan, intelligent start/stop
Efficiency: > 98% (rated operating conditions)
Weight: ≈ 28 kg
Certifications: CE, UL, cUL, C-Tick, GOST R, RoHS

2. Main Functions
Swinging inductor: Patented technology, THD reduction ≥ 25%, meeting IEC 61000-3-12 requirements.
Sensorless vector control: 160% starting torque output at 0.5 Hz, speed accuracy ±0.5%, torque linearity ±5%.
Fan & Pump Applications:
- Multi-pump cycling (1 to 7), automatic switching and soft start;
- Sleep/wake-up, pipe filling and cleaning, flow compensation;
- Built-in PFC (pump & fan control) logic, no external PLC required.
Override Mode: Fire/Tunnel mode, operates at a preset frequency after DI activation, shields most faults and external commands, and is password protected.
Built-in EMC filter: C2 (first environment) / C3 (second environment), passes industrial and civil radiation tests without external connections.
Communication Interface: Standard RS-485 Modbus RTU; optional adapters for PROFIBUS, CANopen, DeviceNet, and EtherCAT.
Safety: STO (Safe Torque Off) SIL3/PL e terminals meet EN 60204-1 Stop Category 0.
Maintenance-Friendly: Assistant-type control panel with hot-swappable functionality, parameter copying, and fault snapshots; coated circuit boards offer Class 3C3 corrosion resistance.
Energy Saving: A built-in energy efficiency calculator displays real-time power savings and CO₂ emission reductions, helping users track energy savings.

3. Typical Applications
• HVAC supply and exhaust, cooling towers, secondary water supply
• Municipal/industrial wastewater treatment aeration, lift pump stations
• Air compressors, extruders, mixers, conveyors
• Tunnel ventilation fire mode, subway exhaust fans

3.Product details pictures

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