SP2403 AC Inverter Drive with 3-Phase High-Performance Vector Control and Safe Torque-Off STO Safety Function for Elevator Modernization

Unidrive SP Series SP2403 AC Inverter Drive,3‑Phase High‑Performance Vector Control

SP2403 belongs to Unidrive SP high‑performance universal AC drive series, manufactured by Control Techniques. Rated 3‑phase 380‑480V input, heavy‑duty 11kW / normal‑duty 15kW output, rated continuous current 25‑29A. It supports multiple control modes: V/F, open‑loop vector, closed‑loop vector and servo control, compatible with asynchronous and synchronous motors. Built‑in multi‑channel programmable I/O, Modbus RTU RS485 communication interface, supports optional expansion modules for encoder feedback and fieldbus connection. Equipped with Safe Torque‑Off STO safety function meeting SIL3/PLe standard, complete over‑current, over‑voltage, under‑voltage and over‑heat protection functions. Compact panel‑mount structure, excellent anti‑vibration and anti‑interference capability. Widely used for elevator modernization, industrial machinery renovation, direct replacement for failed original SP2403 drive unit.

Functions

1. Real‑time precise speed and torque regulation for three‑phase motors, realizes smooth start‑stop and variable‑speed operation for elevator or industrial equipment.
2. Multiple built‑in protection mechanisms cut output quickly when abnormal status occurs, protecting motor and peripheral electrical components.
3. Supports encoder signal feedback, achieves high‑precision closed‑loop control, guarantees stable running performance under variable load conditions.
4. Communicates with main controller via Modbus RTU, realizes parameter configuration, fault diagnosis and running‑status monitoring.
5. Dynamic braking and DC injection braking function ensures reliable rapid stop for lifting equipment such as elevators.

Rich Content 

Input voltage: 3‑Phase AC 380‑480V; Input frequency:48‑65Hz. Working ambient temperature:0℃ ~ +40℃ for full‑load operation; ‑10℃ ~ +55℃ with power derating; Relative humidity ≤95%, non‑condensing. Install inside indoor machine room or control cabinet. Keep away from corrosive gas, conductive dust, water splash and strong electromagnetic interference. Must cut off power before wiring or parameter modification. Professional technicians are required for parameter commissioning according to motor nameplate data. Common application: passenger elevator drive system, material handling equipment, packaging machinery and other industrial automation equipment. Regularly inspect cooling fan and heat sink dust accumulation to avoid over‑heating faults.