Emerson SP3403 AC Variable Speed Drive / Servo Drive

FAQ

Q1: What is the Emerson SP3403 used for?
The SP3403 is used for controlling AC motors and servo motors in industrial applications requiring accurate speed, torque, and motion control, including conveyors, pumps, compressors, cranes, hoists, machine tools, and automated production systems.

Q2: What type of product is the SP3403?
The SP3403 is a Unidrive SP universal AC variable speed drive and servo drive that combines inverter functions with advanced motion control capabilities.

Q3: What are the electrical ratings of the SP3403?
The drive operates from a 380–480 VAC three-phase power supply and provides 56 A continuous output current in Normal Duty mode and 46 A in Heavy Duty mode, supporting motors up to 30 kW (40 HP).

Q4: What are the dimensions and weight of the SP3403?
The SP3403 has approximate dimensions of 250 × 389 × 260 mm and weighs approximately 15.0 kg.

Q5: Which motor control modes are supported?
The SP3403 supports V/Hz control, open-loop vector control, closed-loop induction motor control, rotor flux control (RFC), servo control, and regenerative control, allowing flexible operation with different motor types.

Q6: Which communication protocols are available?
The SP3403 supports Modbus RTU via RS-485 as standard and can be expanded with optional industrial communication modules such as EtherCAT, EtherNet/IP, PROFINET, PROFIBUS-DP, DeviceNet, CANopen, and SERCOS.

Q7: Does the SP3403 include safety and braking functions?
Yes. The SP3403 supports Safe Torque Off (STO) and includes dynamic braking capability for controlled stopping and improved system performance.

Q8: What are the advantages of the Emerson SP3403?
The SP3403 provides high-performance motor control, strong overload capability, multiple feedback options, flexible communication expansion, integrated safety functions, and reliable operation for demanding industrial automation and motion control applications.