... type.. Jogging speed control, multistage speed-control, external analog signal speed control and PC/PLC speed control.. Standard RS485 ... input current (0~20 mA, 4~20 mA).. 1 digital output terminal, 1 multifunction relay output terminal and 2 analog ... for process closed-loop controlOperation FunctionFrequency SettingPotentiometer or external analog signal (0~5V, 0~10V, 0~20mA); keypad (terminal) ...