This manual is for Motortronics DXT digital soft starters with ratings 39-1250A. It covers the product's usage instructions, installation instructions, start-up instructions, user interface and menu navigation, and setpoint programming.
This manual provides detailed instructions for installing, operating, and programming the DXT Digital Soft Starter, a digitally programmable solid state motor starter. It includes sections on setup, user interface, setpoint programming, metering, and maintenance. The device protects motors from torque stress and inrush currents, with programmable features like acceleration curves, overload protection, and communication protocols. Maintenance sections cover SCR testing and component replacement.
| Type of Load | Three phase AC Induction motors or synchronous motors |
|---|---|
| Unit Running Overload Capacity | 125% - Continuous, 500% - 60 seconds or 600% - 30 seconds |
| Frequency | 50 or 60Hz, +2Hz hardware selectable |
| SCR Peak Inverse Voltage Ratings | 1600V |
| Ambient Condition Design | 0° to 40°C (32° to 104°F) 5 - 95% relative humidity 0 - 3300 ft. (1000m) above sea level without derating |
| Control Voltage | 120VAC (Customer supplied) |
| Auxiliary Contacts | Form C (SPDT), rated 5 Amps, 240VAC max. (1200VA) |
| Programmable Outputs | Form C (DPDT), Rated 5 amps 240 VAC max (960 VA) |
| Communication Protocol | Modbus RTU |
| Operator Interface | 2 line x 20 character backlit display using plain English text readout |
It supports three-phase AC induction motors or synchronous motors.
It provides 125% continuous overload, 500% for 60 seconds, or 600% for 30 seconds.
It supports Modbus RTU protocol via RS-485, RS-422, or RS232.
It features a 2-line x 20-character backlit display with plain English text, tactile keypad, and 12 LED status indicators.