Mitsubishi Electric FR-F820-00077 Instruction Manual page 369

Parameters
Monitor display (setting) increments
● When both Pr. 37 and Pr. 144 have been set, their priorities are as given below.
Pr. 144 = 102 to 112 > Pr. 37 = 1 to 9998 > Pr. 144 = 2 to 12
● The combination of the Pr. 37 and Pr. 144 settings as shown below determines the setting
increment for each monitor. (The initial values are shown in grey shaded fields.)
Pr. 37
Setting
0
(initial
value)
1 to 9998
Tab. 5-86:
Motor speed r/min conversion formula:
Machine speed conversion formula:
For Pr. 144 in the above formula, the value is "Pr. 144 – 100" when "102 to 112" is set in Pr. 144; and
the value is "4" when Pr. 37 = 0 and Pr. 144 = 0.
Pr. 505 is always set as frequency (Hz).
NOTES The inverter's output frequency is displayed as synchronous speed under V/F control. The dis-
played value is "actual motor speed" + "motor slip". When Advanced magnetic flux vector control,
or PM motor control is selected, the actual motor speed (estimated value by motor slip calcula-
tion) is used.
When Pr. 37 = "0" and Pr. 144 = "0", the running speed monitor is displayed with the number of
motor poles 4. (Displays 1800 r/min at 60 Hz)
To change the PU main monitor (PU main display), refer to Pr. 52.
When using the machine speed display for the parameter unit (FR-PU07), do not change the speed
with the up/down key if a set speed above 65535 is being displayed. The set speed may become
an undetermined value.
When the FR-A8ND option is connected, the frequency display (setting) will be used regardless of
the Pr. 37, Pr. 144 settings.
CAUTION:
E
Make sure to set the running speed and the number of motor poles.
Otherwise, the motor might run at extremely high speed, damaging the machine.
Parameters referred to
Pr. 1
Pr. 52
Pr. 81
Pr. 800
FR-F800
Pr. 144 Output frequency
Setting monitor
0 0.01 Hz
2 to 12 0.01 Hz
102 to 112
1 r/min
0 0.01 Hz
2 to 12
1 (machine speed )
102 to 112 0.01 Hz
Setting range of parameter 37 and 144
Maximum frequency
Operation panel main monitor selection
Number of motor poles
Control method selection
(M) Monitor display and monitor output signal
Running speed
Set frequency monitor
0.01 Hz
0.01 Hz
1 r/min
0.01 Hz
1 (machine speed )
1 (machine speed ) 1 (machine speed )
0.01 Hz
Frequency ×120 / Number of motor poles (Pr. 144)
Pr. 37 × Frequency / Pr. 505
Frequency setting
monitor parameter setting
0.01 Hz
1 r/min
0.01 Hz
1 r/min
1 r/min 1 r/min
0.01 Hz
1 (machine speed )
0.01 Hz
1 r/min
=> page 5-176
=> page 5-198
=> page 5-41
=> page 5-41
5 - 197