... : overload, overcurrent, phase failure, over voltage etc. 2. measure volt, amp, watt, kwh 3. Modbus/Profibus Features: 1. Use module framework ... starter, star/delta starter, and autotransformer starter etc motor starting control modes. 5. Main module provides 9 DIs for start, stop ... . Main module provides 5 DOs to meet varies of starting control modes and protection action. If more DOs are needed, an ...