The functions like PID inside, 16 steps of speed control and simple PLC can Meet different application needs Users can choose PC or PLC to control the upper computer by RS485 Communication interface with MODUS RTU ASCII protocol inside Technology Features I/O characteristics Rated Input Voltage Range: 380V/220V 15% Rated Input Frequency Range: 47~63Hz Rated Output Voltage Range: 0~Rated Input Voltage Rated Output Frequency: 0~650Hz Peripheral Interface Characteristics Programmable Digital Input: 6 input channels Open Collector Output: Provide 1 output channel Provide 1 output channel ) Analog Output: Provide 2 output channels: FM Terminal: 0/4~20mA or 0~10V AM Terminal: 0 ~10V ( notice: 7.5KW and below only provide FM terminal ) Channel: 0~50 kHz Control Characteristics Communication setting, PID setting, etc.