The document is the user manual of MVC4 medium voltage solid state soft starter. It details the product's features, specifications, design features, working principles, protection functions, control connections, starting programs and user interface.
The Motortronics MVC4 is an SCR-based controller designed for the starting, protection, and control of AC medium voltage motors. It features a Class E2 design with programmable overload curves, phase current imbalance protection, and dynamic reset capacity to learn motor thermal characteristics.
| AC Supply Voltage | 1000 – 7200VAC +10 to – 15% |
|---|---|
| Unit Running Overload Capacity | 125% - Continuous |
| Frequency | 50 or 60Hz, +2Hz hardware selectable |
| Power Circuit | 6 SCRs, 12 SCRs, 18 SCRs |
| SCR Peak Inverse Voltage Ratings | 4500V - 19500V |
| Ambient Condition | 0° to 40°C (32° to 104°F) |
| Control Voltage | 2 or 3 wire 120VAC |
| Auxiliary Contacts | Multiple: Form C (Contacts), rated 5 Amps, 240VAC max |
| BIL Rating | 1000V – 30KV |
| Protocol | Modbus RTU |
| Signal | RS-485, RS-422 or RS232 |
The unit has a continuous running overload capacity of 125% of motor FLA.
The soft starter supports 50 or 60Hz frequencies with a +2Hz hardware selectable option.
Enclosed units are designed for ambient conditions from 0° to 40°C (32° to 104°F).
The device supports Modbus RTU protocol via RS-485, RS-422, or RS232 signals.