Yaskawa Z1000U - Manual (Page 130)

Setting 1: ENTER Key not Required
The output frequency changes immediately when the reference is changed by the up or down arrow keys on the HOA keypad.
The ENTER key does not need to be pressed. The frequency reference (Fref) is saved to memory after remaining unchanged
for 5 seconds.
4.7 Basic Drive Setup Adjustments
130 YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual