Normally, one Canworld inverter can drive two pumps, and four pumps with constant pressure by extended card.
The inverter could be set as a master or a slave.
Set as master:
The syncs reference parameter can be from the reference frequency, operating frequency, or torque reference.
Set as a slave:
Can set the slave to follow the master running command or not. The inverter supports droop control, which can drive one load by multiple motors for distribution control.