Goodrive350-19 series VFD Commissioning
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power balance modes, master/slave mode 4 is the master/slave speed synchronization mode, and
master/slave mode 3 is reserved. Master/slave mode 0 and master/slave mode 1 are used often.
1. Master/slave mode 0 (P28.02 ones place=0)
Basic principle: Both the master and slave adopt the speed control mode, and the power balance is
achieved by the droop control.
Commissioning method: Set P28.00 to 1 for the master, set P28.00 to 2 for the slave, set the ones
place of P28.02 to 0 both for the master and slave to select master/slave mode 0, and adjust P28.03
for the slave based on the actual situation.
The master sends the running command and speed to the slave through CAN communication. The
slave starts according to the command given by the master and runs according to the speed given by
the master. At this time, adjust the droop frequency of the slave P08.30 to meet the power balance
requirement.
2. Master/slave mode 1 (P28.02 ones place=1)
Basic principle: The master and slave must use the vector control mode of the same type, the master
uses speed control, and the slave will be forced to use the torque control mode.
Commissioning method: Set P28.00 to 1 for the master, set P28.00 to 2 for the slave, set the ones
place of P28.02 to 1 both for the master and slave to select master/slave mode 1, and adjust P28.04
for the slave based on the actual situation. The slave will be switched to torque mode automatically,
and therefore P03 parameters do not need to be adjusted.
The master sends the running command and speed to the slave through CAN communication. The
slave starts according to the command given by the master and runs according to the torque given by
the master.
3. Master/slave mode 2 (Combined mode, P28.02 ones place=2)
Basic principle: The slave starts in the speed control mode (master/slave mode 0) and then switches
to the torque mode (master/slave mode 1) at a certain frequency point.
Commissioning method: Set P28.00 to 1 for the master, set P28.00 to 2 for the slave, set the ones
place of P28.02 to 2 both for the master and slave to select master/slave mode 2, and adjust P28.03
and P28.04 for the slave based on the actual situation. In addition, set P28.05.
The master sends the running command, speed and torque to the slave through CAN communication.
The slave starts according to the command given by the master and runs according to the speed
given by the master if the switching frequency point is not reached but runs according to the torque
given by the master if the switching frequency point is reached.
4. Master/slave mode 3 (Reserved)
5. Master/slave mode 4 (Closed-loop master/slave mode, speed synchronization mode)
Basic principle: In the position synchronization mode, speed synchronization means to compare the
position pulse counts of the master and slave and correct the position pulse error at the slave side so