1.3 Part Names1-31 Outline1.3 Part Names1.3.1 Multi-Winding Drive Unit Part NamesThe part names of the multi-winding drive unit are given below.No. Name Description ReferenceControl power supply inputconnectors (CN7A andCN7B)CN7A is the 24 VDC (±15%) input connector.CN7B takes the same input, but it is normally notnecessary to connect it.– Panel display Shows the status of the multi-winding drive sys-tem with a seven-segment LED display. – Personal computer connec-tor (CN4)A USB connector used to connect a personal com-puter. Use the special personal computer cable tomake the connection.– Digital operator connector(CN54)Used to connect to a digital operator or personalcomputer (RS422). –Connectors for MECHA-TROLINK-II communica-tions (CN9A and CN9B)Used to connect devices that support MECHA-TROLINK-II. – Connector for I/O signals(CN1) Used to connect sequence I/O signals. – Encoder connector (CN21) Connects to the encoder cable. – CN22 connector Do not connect anything to this connector. – CN3 connector Do not connect anything to this connector. – Local communications con-nectors (CN41A and CN41B) Used to connect the SERVOPACKs. –Nameplate Gives the product model number and ratings. It isattached to the side of the unit. –Model number Gives the model number of the multi-windingdrive unit. –