Mitsubishi Electric Freqrol Z024-UL Instruction Manual page 107

Instead of the frequency (Ht), the
Set value 0
monitoring display can be changed to the
motor speed (rpm), load shaft speed, line
speed (m/min), etc. The motor speed
(number
of
motor
poles
is input)
displayed is the synchronous speed
Set values 2 to 10
Set values
11
to 9998
-101
-
Output frequency (Hz)
display (factory setting)
Motor speed (rpm) display
Load speed display'