Monitor Item Selection On Operation Panel Or Via Communication - Mitsubishi Electric FR-A800 Series Instruction Manual

Pr.37 setting Pr.144 setting
0
0 (initial
2 to 12
value)
102 to 112
0
1 to 9998 2 to 12
102 to 112
*1 Motor speed r/min conversion formula: frequency × 120 / number of motor poles (Pr.144)
Machine speed conversion formula: Pr.37 × frequency / Pr.505
The Pr.144 value in the above formula is "Pr.144 - 100" when any of "102 to 112" is set in Pr.144. The value is "4" when Pr.37 = 0 and Pr.144 = 0.
The item set in Pr.505 is consistently a frequency (Hz).
*2 The increment can be changed in Pr.811 from 1 r/min to 0.1 r/min.
NOTE
• The inverter's output frequency is displayed as synchronous speed under V/F control. The displayed value is "actual motor
speed" + "motor slip". When Advanced magnetic flux vector control, Real sensorless vector control, or PM sensorless vector
control is selected, the actual motor speed (estimated value by motor slip calculation) is used. When the encoder feedback
control or vector control is selected, the actual motor speed from the encoder 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.
• If the setting increment is changed to 1 r/min (Pr.811 = "0 or 10") after setting the running speed in 0.1 r/min (Pr.811 = "1 or
11"), the 0.1 r/min increment may be dropped, in order for the rotations per minute resolution to change from 0.1 r/min to 0.3
r/min (when using four poles).
• 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 displayed. The set speed may become an undetermined value.
• When a certain type of communication option is used, the frequency display (setting) is used regardless of the Pr.37 and
Pr.144 settings. Refer to the Instruction Manual of each communication option for details. (The frequency display (setting) is
always used for HMS network options.)
• When Pr.811 = "1 or 11" with the 0.1 r/min increment, the upper limit is as follows.
Speed command setting range: 6000 r/min for 2 to 10 motor poles, 5900 r/min for 12 motor poles
Running speed monitor such as the operation panel: 6553.5 r/min
Full scale of the running speed motor for analog output (terminals FM, CA and AM): 6000 r/min
CAUTION
• 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 Maximum frequencypage 428
Pr.22 Torque limit levelpage 245
Pr.52 Operation panel main monitor
Pr.81 Number of motor
Pr.800 Control method
Pr.811 Set resolution switchoverpage 245
5.11.2 Monitor item selection on operation panel or via
communication
The monitor item to be displayed on the operation panel or the parameter unit can be selected.
Pr.
52 Operation panel main
M100 monitor selection
446
5. PARAMETERS
5.11 (M) Item and output signal for monitoring
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Output frequency
indication
0.01 Hz
0.01 Hz (initial setting) 0.01 Hz (initial setting) 1 r/min
*1*2
1 r/min
0.01 Hz
*1
1 (machine speed
0.01 Hz
selectionpage 446
polespage 221
selectionpage 221
Name Initial value
0 (output
frequency)
search engine
Set frequency
indication
0.01 Hz
1 r/min
setting)
*1*2
1 r/min 1 r/min
0.01 Hz
1 (machine speed
*1
) 1 (machine speed ) 1 (machine speed
0.01 Hz
1 r/min
Setting range
0, 5 to 14, 17 to
20, 22 to 36, 38
Select the item monitored on the operation panel or
to 46, 50 to 57,
parameter unit.
61, 62, 64, 67,
Refer to
71 to 75, 87 to
98, 100
Running speed Indication of frequency
indication setting parameter
*1*2
0.01 Hz.
*1*2
(initial
0.01 Hz (initial setting)
*1*2 *1
1 r/min
*1
0.01 Hz.
)
*1
) 1 (machine speed
*1*2
0.01 Hz.
Description
page 447 for the monitor item selection.
*1
)