Motor forward running circuit

In the figure, FR is
the forward run and stop command terminal. COM is the contact
input common terminal; 30B and 30C are the
normally closed contacts of the general alarm output relay . When the inverter has overvoltage
, undervoltage, short circuit, overheating, overload and other faults
, this contact will open and the control circuit will When power is lost,
the protection function starts.
    Adjust the frequency given potentiometer RP. Set the
motor operating speed.