Appendix A Debugging Of Master/Slave Control; Wiring Of Master/Slave Control; Debugging Procedure - INVT Goodrive3000 Series Operation Manual

Goodrive3000 series medium voltage VFD
Appendix A Debugging of master/slave
A.1 Wiring of master/slave control
A.2 Debugging procedure
Goodrive3000 VFD has special function group of master-slave control. Only by simple parameter settings can users
realize master-slave operation and power balance among multiple motors. There are two modes of master-slave control
set by P21.02.
When P21.02=0, master-slave mode 0, set the master (1) and slave(s) in speed control mode and adopt droop control to
realize power balance. The flow is shown as follows:
Master-slave mode 0
Master
Frequency
reference
Slave
Note:
Both the master and slave use speed control, and power balancing is performed by droop control.

The master-slave mode is applicable to both rigid connection and flexible connection. It is generally recommended in

flexible connection.
control
+
+
ACC/DEC step
+
-239-
Droop control
P08.30
Speed
control
Master VFD
Speed
control
+
Slave VFD
Droop control
P08.30
Debugging of master/slave control
M1
M2