This document is an introduction to the installation and operation manual of the Motortronics VMX series digital solid-state soft starter for AC motors. The document covers topics such as installation, motor overload protection, wiring, programming settings, starting, and fault status.
The Motortronics VMX Series is a programmable voltage/current ramp soft starter designed for three-phase AC motors. It features a microprocessor-based thermal model for precise motor protection, adjustable start torque, ramp time, and current limit settings. The unit includes LED status indicators and a keypad for parameter configuration, supporting various ramp types including dual ramps and soft stop functions.
The device can withstand 350% of full load current for up to 30 seconds.
Users can set the ramp time anywhere from 1 second to 120 seconds.
The system trips when the PTC resistor exceeds 750 ohms.