Debugging Procedure Of Master-Slave Control - INVT Goodrive3000 Series Operation Manual

Goodrive3000 series medium voltage VFD
A.2 Debugging procedure of master-slave control
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:
1. When the master and slave adopt speed control, apply droop control to realize power balance;
2. The master-slave mode is applicable to both rigid connection and flexible connection, generally,
recommended in flexible connection.
The flow of relevant parameter settings is shown below:
Remark:
1. The master and slave should be set the same communication mode (CAN communication or RS485
communication);
2. P08.30 is the frequency decreasing velocity of droop control. Generally, the parameter can be set the
+
+
ACC/DEC step
+
Master-slave mode 0
Set P00.00 (master and slave) to the
same control mode
(V/F control or vector control)
Set P21.00=1(master)
P21.00=2(slave)
Set P21.02=0
(master and slave)
Set P21.01=0 (CAN
communication, recommended)
=1 (485 communication)*
Set P08.30
(Frequency decreasing
ratio of droop control)*
Debugging of master-slave control
Droop control
P08.30
Speed
control
Master VFD
Speed
control
+
Slave VFD
Droop control
P08.30
Start
End
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M1
M2