YASKAWA Varispeed G7 Series Instruction Manual page 315

Output frequency
Forward operation/stop
DOWN command
Frequency
matching signal*
-82
6
Upper limit
Accelerates to
lower limit
Lower limit
UP command
Power supply
* The frequency matching signal turns ON when the motor is not accelerating/
decelerating while the Run Command is ON.
Fig 6.54 UP/DOWN Commands Time Chart
Same
frequency
Reference
frequency reset