... inverter 1. DSP control system 2. G/P structure 3. Modbus protocol, RS485 CHF series frequency inverterOverviewDSP control system is applied ... to the CHF series frequency converter, to complete optimal V/F control, ... -functional 4-way digital input, 1-way high speed instant pulse input, 2-way analog input, 2-way relay output (Steps at 2.2KW or below ...