Hello guys .I am a newbie (never used or installed a VFD before) trying to install a Huanyang GT series VFD to control the foot pedal on my tire changing machine .I have everything installed and i can use the keypad to turn the motor in forward and reverse positions . i have been unable to get the foot pedal to operate the motor however The pedal is controlled by 3 micro switches .One for low speed .one for high speed and one for reverse . i have tried multiple programming parameters but cannot get it to work.I ran the low speed wire to S1 the high speed wire to S2 and the reverse to S3 ran the green wire to ground . Should this setup even work on this VFD ?