This manual introduces basic information about the VMX digital solid state soft starter, including product overview, sizes and ratings, installation, motor overload protection, connections, programming, startup, and fault conditions.
The VMX Series is a digitally programmable solid-state reduced voltage soft starter designed for three-phase AC induction motors. It features a six-SCR design with voltage or current ramp control, anti-oscillation circuits, and programmable keypad settings for smooth load acceleration and protection. The unit includes advanced motor protection features such as electronic overload protection, current imbalance tripping, and phase loss detection, alongside standard features like dual ramp settings and integrated batch process timers.
| Type of Load | Three phase AC induction motors |
|---|---|
| AC Supply Voltage | Universal, 208 - 600VAC ±10%, 50/60 Hz |
| Power Ratings | 18 - 1250 Amps, 7.5 - 1000 HP @ 460V |
| Overload Rating (30s) | 350% of motor FLA |
| Overload Rating (10s) | 600% of motor FLA |
| Control Power | 120VAC (240VAC optional) |
| Inputs | 6 Dry (voltage free) contact inputs |
| Output Relays | 3 relays, 2 each Form C, 1 each Form A |
| Output Relay Contact Rating | 5 Amps, 240VAC max |
The unit can withstand starting currents of 350% of motor FLA for 30 seconds.
The unit can withstand starting currents of up to 600% of motor FLA for 10 seconds.
The unit requires 120VAC control power, with 240VAC as an optional configuration.
The VMX Series includes 3 programmable relays: two Form C and one Form A.