... constant,variable torque mode, flexible I/O, field bus VD4 series single phase, 220V AC 0.75KW frequency invertersVD4-20P7Suitable motor:0.75KW ... is removable, External Dimension: 50*190*144 (Note: VD4-20P7-A has OC output, current display and brake, improve the response ... partsextension cable of digital panel; brake resistor. frequency inverter VD4 series variable frequency inverter