frequency converter controls the motor forward and reverse in the following ways:
1. The command channel is run through the keyboard, which is panel control.
2, communication operation command channel control.
3, terminal operation command channel control.
This article introduces how the frequency converter controls the forward and reverse rotation of the motor through the terminal operation command channel.
connects the intermediate relay coil through the button, and the intermediate relay contacts control the on and off of the inverter terminals, and set the inverter parameters to achieve forward and reverse control of the motor.
Let’s take INVT GD20 frequency converter as an example to see the specific implementation process:
1, main circuit terminal diagram
2, main circuit wiring diagram
fuse , braking resistor , input reactor , input filter , output reactor and output filter are all optional accessories.
3, control loop terminal diagram
4, control loop wiring
control principle description:
PW can be connected to 0V or 24V. When PW is connected to 24V, the common end of the input signal should be connected to 0V.
SB1 is the stop button, SB2 is the forward button, and SB3 is the reverse button.
5, inverter parameter setting
P00.18 is set to 1 (restore factory settings)
P00.01 is set to 1 (select the inverter control command channel as the terminal operation command channel)
P05.01 is set to 1 (S1 terminal function is selected as forward rotation Run)
P05.02 is set to 2 (S2 terminal function is selected as reverse operation)
