Frequency inverter 1. DSP control system 2. G/P structure 3. Modbus protocol, RS485 CHF series frequency inverterOverviewDSP ... high speed application, can meet most customers' requirements with G/P structure.Applications1. Boiler blowers, exhaust fans under mines;2. ... simple PLC, multi-rate and PID control, swing frequency functions:4. multi-functional 4-way digital input, 1-way high speed instant ...