The hardware needs to first install a PG Card. On the PG Card, choose one of the encoder setting: Open-Collector or Line-Driver, and make sure the voltage setting is accurate. Next, set up the pulse per encoder rotation and pulse type on parameter setting. For example, Delta VFD-VE AC drive uses EMV-PG01X series PG Card with 1,024 pulses per encoder rotation and encoder setting is Open-Collector 12V. The PG card settings : For parameter setting of 10-00, pulse per encoder rotation is 1,024. Before parameter 10-01 setting, it is important to select a pulse type (AB phase, pulse and direction or single pulse). Last, set parameter 00-04 to 7 then you will see the motor rotation speed on the HMI.