ACS355-03U-46A2-2 – Technical Specifications
General Information
Manufacturer: ABB

Model: ACS355-03U-46A2-2

Type: Compact Variable Frequency Drive (VFD)

Application: Industrial motor speed control

Electrical Parameters
Input Voltage: 380-480V AC (3-phase, 50/60Hz)

Output Power: 22kW (30HP)

Output Current: 46A (continuous)

Overload Capacity:

110% for 60s

150% for 2s

Frequency Range: 0-500Hz

Control & Performance
Control Method: DTC (Direct Torque Control)

Speed Control Range:

1:100 (sensorless)

1:1000 (with encoder)

Speed Accuracy: ±0.1% of rated speed

Torque Response: <5ms

Communication & I/O
Standard Interfaces:

2 analog inputs (0-10V/4-20mA)

2 analog outputs (0-20mA)

6 digital inputs

3 relay outputs

Optional Protocols:

Modbus RTU (RS-485)

BACnet MS/TP

PROFIBUS DP

Protections
Motor Protection:

Overcurrent

Overtemperature

Phase loss

Ground fault

Drive Protection:

Overvoltage

Undervoltage

Short circuit

Mechanical Specifications
Enclosure Rating: IP21 (standard), IP55 (optional)

Cooling Method: Fan-cooled

Operating Temperature:

-10°C to +50°C (no derating)

Up to +60°C (with derating)

Storage Temperature: -40°C to +70°C

Humidity: <95% RH (non-condensing)

Dimensions: 275 × 190 × 195 mm (W×H×D)

Weight: 7.5kg

Certifications
Safety: CE, UL, cULus

EMC: EN 61800-3

Marine: DNV-GL, ABS (optional)

Key Features
✔ Built-in EMC filter for reduced interference
✔ Plug-and-play macro configurations
✔ Energy optimization algorithm
✔ PID controller for process control
✔ Brake chopper ready (optional)