ACS850-04-078A-5+J400 Technical Specifications
General Information
Manufacturer: ABB

Model: ACS850-04-078A-5+J400

Type: Industrial AC Drive (Variable Frequency Drive, VFD)

Application: Motor speed control for pumps, fans, conveyors

Key Parameters
Electrical Specifications
Input Voltage: 380-480V AC (±10%), 3-phase, 50/60Hz

Output Power: 37 kW (50 HP)

Output Current: 78A (continuous)

Overload Capacity: 110% for 60s, 150% for 2s

Efficiency: ≥97% (IGBT technology)

Control & Performance
Control Modes:

Scalar (V/f)

Sensorless vector control (DTC option)

Speed Range: 1:100 (sensorless), 1:1000 (with encoder)

Torque Response: <5ms (DTC mode)

Switching Frequency: 1-12kHz (adjustable)

Protection & Safety
Protections:

Overcurrent, overvoltage, undervoltage

Motor overtemperature (PTC input)

Short-circuit (IGBT protection)

Certifications: CE, UL, cUL

Environmental
Operating Temperature: -15°C to +40°C (derate above 40°C)

Storage Temperature: -40°C to +70°C

Humidity: <95% non-condensing

Enclosure Rating: IP21 (standard) / IP54 (optional)

Communication & I/O
Standard I/O:

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

2x relay outputs (30VDC/5A)

4x digital inputs (24VDC)

Optional Cards:

+J400 (Fieldbus module: PROFIBUS DP, Modbus RTU)

Ethernet/IP, DeviceNet

Physical Specifications
Dimensions (W×H×D): 350 × 700 × 300 mm

Weight: 45 kg

Cooling: Forced air (integrated fan)

Mounting: Wall-mounted or floor-standing

Typical Applications
Industrial pumps & fans

Mining conveyors

HVAC systems

(For full wiring diagrams, see ABB ACS850 Hardware Manual.)