5.12 Monitor Display And Monitor Output Signal; Speed Display And Speed Setting (Pr. 37) - Mitsubishi Electric 700 Series Instruction Manual

Monitor display and monitor output signal

5.12 Monitor display and monitor output signal

Purpose
Display motor speed
Set speed
Change the monitored item
displayed on the operation panel

5.12.1 Speed display and speed setting (Pr. 37)

The monitor display and frequency setting of the operation panel can be changed to the machine speed.
Parameter
Name
Number
37
Speed display
The above parameters can be set when Pr. 160User group read selection = "0". (Refer to page 167)
∗ The maximum value of the setting range differs according to the Pr. 1 Maximum frequency (Pr.18 High speed maximum frequency) and it can be calculated from the
following formula.
Maximum setting value of Pr. 37
Note that the maximum setting value of Pr. 37 is 9998 if the result of the above formula exceeds 9998.
To display the machine speed, set in Pr. 37 the machine speed for 60Hz operation.
For example, when Pr. 37 = "1000", "1000" is displayed on the output frequency and set frequency monitor when the
running frequency is 60Hz. When running frequency is 30Hz, "500" is displayed.
Output Frequency
Pr. 37 Setting
0 (initial value)
0.01 to 9998 Machine speed
∗1 Machine speed conversion formula ..........Pr. 37 × frequency/60Hz
∗2
Hz is displayed in 0.01Hz increments and machine speed is in 0.001.
NOTE
Under V/F control, the output frequency of the inverter is displayed in terms of synchronous speed, and therefore,
displayed value = actual speed + motor slip. The display changes to the actual speed (estimated value calculated based
on the motor slip) when Advanced magnetic flux vector control was selected or slip compensation was valid.
Since the panel display of the operation panel is 4 digits in length, the monitor value of more than "9999" is displayed "----".
While the machine speed is displayed on the monitor, values of other parameters related to speed (Pr. 1 , etc.) are in
frequency increments. Set other parameters (Pr. 1, etc) related to speed in increments of frequency.
Due to the limitations on the resolution of the set frequency, the indication in the second decimal place may differ
from the setting.
When frequency or set frequency is monitored through FL remote communication, frequency is displayed for
monitor description regardless of Pr. 37 setting.
Make sure that the running speed setting is correct.
Otherwise, the motor might run at extremely high speed, damaging the machine.
Parameters referred to
Pr. 1 Maximum frequency, Pr.18 High speed maximum frequency
Pr. 52 DU/PU main display data selection
Pr. 800 Control method selection
146
Speed display and speed setting
Operation panel main display
data selection
Cumulative monitor clear
Initial
Setting Range
Value
0
0.01 to 9998∗
16777.215 × 60 (Hz)
<
Setting value of Pr. 1 (Pr.18) (Hz)
Set Frequency
Monitor Monitor
Hz Hz
Machine speed
∗1
CAUTION
Refer to page 147
Refer to page 93
Parameter that should be Set
Pr. 52, Pr. 170, Pr. 171, Pr. 268,
0 Frequency display, setting
Machine speed at 60Hz.
Frequency Setting
Hz
Machine speed
∗1 ∗1
Refer to page 105
Pr. 37
Pr. 563, Pr. 564
Description
Parameter Setting
Hz
Refer to
Page
146
147