SKC3400220 Control Techniques Emerson Nidec Drives 2.2kW 3P 380-480 VAC

SKC3400220 Control Techniques Emerson Nidec Drives 2.2kW 3P 380–480 VAC

1.Overview of the SKC3400220 Control Techniques Emerson

The SKC3400220, a member of Emerson's Control Techniques Commander SK series, is designed for 380-480 V three-phase industrial applications. It provides high-precision speed and torque control for induction motors up to 2.2 kW. Its plug-and-play design and zero-lateral clearance installation within the cabinet make it an ideal choice for OEM batch production and for upgrading older cabinets.

High-performance motor control: Utilizing sensorless vector control technology, it precisely controls current based on load changes in real time. It delivers 150% of rated output torque at a low frequency of 1 Hz, ensuring smooth motor starting and stable operation. It supports open-loop vector control, speed or torque control, and a speed reference input (0-10 V, 4-20 mA) to meet diverse control needs. The output frequency reaches up to 1500 Hz, with a wide frequency range of 0-1500 Hz.

Powerful Programmability and Expansion Capabilities: Soft PLC function design is supported using Logstick logic sticks and SPYLITE software, enabling ladder diagram programming and implementing complex logic control without the need for a separate PLC. Modular expansion capabilities allow for expandable I/O and fieldbus cards, supporting mainstream fieldbuses such as Profibus, DeviceNet, CANopen, and EtherNet, facilitating system integration.

Fully Integrated Design and High Reliability: The entire series features built-in EMC filters and brake units, complying with electromagnetic compatibility standards. Comprehensive protection features include undervoltage, overcurrent, overload, short circuit, ground fault, and overtemperature protection. Intelligent thermal management technology automatically optimizes switching frequency, ensuring stable operation in ambient temperatures ranging from -10°C to +40°C.

User-Friendly Design: Modbus RTU and RS485 communication interfaces facilitate network connectivity. SmartStick supports one-click parameter backup and transfer. The compact design and high-strength molded plastic construction make installation easy.

2.Core Features:

Electrical Ratings

Rated Power: 2.2 kW / 3 HP
Input Voltage: 3 x 380 – 480 VAC ±10%, 50 / 60 Hz
Rated Output Current: 5.1 A (Continuous Operation)
Overload Capacity: 150% of rated current for 60 s (7.7 A)
Braking Unit: Built-in braking transistor, supports direct connection of an external 80 Ω / 400 W braking resistor
Power Factor: ≥ 0.95 (Full Load)

Control Performance

Control Modes: V/F Linear, Quadratic V/F, Sensorless Vector Control (SVC)
Speed ​​Range: V/F 1:100; SVC 1:200
Starting Torque: 200% at 0.5 Hz (SVC Mode)
Frequency Resolution: 0.01 Hz
Carrier Frequency: Adjustable from 2 to 16 kHz to reduce motor noise
PID Built-in: Closed-loop pressure/flow control, no external regulator required.

Interfaces and Expansion
Keyboard: Two-line, 16-character LCD, supports Chinese menus and parameter cloning.
Communications: RS485 with Modbus RTU standard; optional plug-in modules for Profibus-DP, DeviceNet, CANopen, and EtherNet/IP.
I/O:
– 6 digital inputs (including one 50 kHz high-speed pulse)
– 1 relay output (normally open/normally closed, switchable)
– 1 analog input, 0–10 V / 4–20 mA, switchable
– 1 analog output, 0–10 V (selectable frequency, current, or power)
Safety: STO (Safe Torque Off) terminal, compliant with PL d / SIL2.

Environmental and Mechanical

Protection Rating: IP20 (internal heat sink, cabinet installation)
Operating Temperature: −10°C to +50°C (derating available to +60°C)
Mounting: DIN Rail or screw mounting allows for zero stacking and side-by-side installation without lateral clearance.
Dimensions: 90 mm × 180 mm × 165 mm
Weight: ≈ 2 kg

Core Functions

Motor Auto-Tuning: Automatically optimizes parameters in 30 seconds for both static and rotating operation.
Energy-Saving Operation: Automatic excitation optimization, achieving 5-8% energy savings.
Smart Fan: Temperature-controlled start and stop, reducing noise and extending life.
Built-in Class C3 EMI filter, meets IEC 61800-3 industrial environment requirements and is CE certified.
Parameter Cloning: One-touch upload/download from the keyboard, batch debugging completed in 3 minutes.
Remote Monitoring: RS485 networking for up to 32 units, real-time reading and writing of over 300 parameters.

The Control Techniques Emerson SKC3400220 frequency converter combines high-performance vector control, flexible scalability, and convenient programming for a wide range of industrial automation applications.

3.Product details pictures

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