Communication card of Shenzhen Inovance Technology Co., Ltd is specially designed for the
MD320 series inverter to provide remote serial port communication function.
Appendix D: Description of Communication Card (MD32MBS)
D.1 Instruction for use
D.1.1 Model
Appendix D: Table 1 Communication Card Model Description
Name Model Function
RS-232 Communication card MD32-232 RS-232 Communication interface card
RS-485 Communication card MD32-485 RS-485 Communication interface card
D.1.2 Function and Terminal Connection
Communication card is divided into RS-232 communication interface card and RS-485
communication interface card and serves as the expansion card special for the MD320
inverter of Shenzhen Inovance Technology Co., Ltd, which can provide RS-232 and RS-485
communication modes respectively. Their electric parameters comply with the international
standard, and the user can select RS-232 communication card or RS-485 communication card
according to the actual needs so as to implement the function of controlling the inverter running
and parameter setting in the serial port mode.
Refer to MD320 Serial Communication Protocol for the details regarding the communication
card, which is available on the website of www.inovance.cn or from the local representative
ofce or agent.
Description of RS-232 communication card: The physical structure and connecting mode are
as shown in Appendix D: Fig.1 Physical Structure and Connecting Mode, while RJ45 interface
signal denition is as shown in Appendix D: Fig.2 RS-232 Signal Denition.