Emerson Control Techniques Skc3400400 AC Drive Commander SK 3ph 4.0kw

Emerson Control Techniques SKC3400400 AC Drive Commander SK 3ph 4.0kW

Product Overview
The Emerson Control Techniques SKC3400400 (Commander SK) is a compact, cost-effective AC drive that delivers 4 kW (5 HP) continuous power at 380–480 V 3-phase.  Designed for pumps, fans, conveyors, and general machinery, it provides sensor-less vector control, dynamic braking, and an integrated C3 EMC filter in a 130 mm-wide Frame-1 housing.  Plug-in keypads, I/O expansion, and multiple fieldbus cards make integration with PLCs, HMIs, and SCADA systems fast and future-proof.

Key Features & Benefits
• 4 kW / 5 HP continuous output, 9.4 A rated current
• 380–480 V ±10 % universal input – global mains compatibility
• Sensor-less vector & V/Hz modes – 150 % overload for 60 s
• Integrated C3 EMC filter – meets EN 61800-3 without add-ons
• Built-in dynamic-brake transistor – ready for external resistor
• 0–500 Hz output, 0.01 Hz resolution
• RS-485 Modbus RTU standard – plug-in keypad for cloning
• 3 expansion slots – I/O, encoder, or fieldbus cards (Profibus, EtherNet/IP, CANopen)
• IP20 Frame 1 – side-by-side DIN-rail mounting saves panel space
• UL, CE, ATEX Zone 2, marine approvals – worldwide acceptance

Technical Specifications
Model: SKC3400400
Power: 4 kW / 5 HP (normal duty), 9.4 A
Input: 380–480 V AC 3-phase, 50/60 Hz, ±10 %
Overload: 150 % for 60 s, 200 % for 3 s
Switching Frequency: 3 kHz default, 2–16 kHz adjustable
Control: Sensor-less vector, V/Hz, torque control
I/O: 6 DI, 2 AI, 1 DO, 1 relay, RS-485 Modbus RTU
Ambient: 0 °C … +40 °C (derate > 40 °C)
Dimensions: 130 mm × 180 mm × 160 mm (W × H × D)
Weight: 2.1 kg

Typical Applications
• Centrifugal pumps & cooling-tower fans
• Belt conveyors & bucket elevators
• Mixer / agitator drives
• HVAC supply & return air systems

 

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