Mitsubishi Electric FR-D720-0.2K-G, Instruction Manual

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132
Monitor display and monitor output signal
4.12 Monitor display and monitor output signal
4.12.1 Speed display and speed setting (Pr. 37, Pr. 144, Pr. 505)
The above parameter can be set when
Pr. 160 Extended function display selection
= "0".
(Refer to page 161.)

The maximum value of the setting range differs according to the Pr. 1 Maximum setting , and it can be calculated from the following formula.
Note that the maximum setting value of Pr. 37 is 9998 if the result of the above formula exceeds 9998.

The value left of the slash is for the 2.2K drive unit or lower. The one right of the slash is for the 3.7K drive unit.
 To display a machine speed, set
Pr. 37
to the machine speed at the frequency set in
Pr. 505
, and set
Pr. 144
to the number of
motor poles (4, 6).
For example, when
Pr. 505 = "100Hz" and Pr. 37 = "1000", "1000" is displayed on the set frequency monitor when the
running frequency is 100Hz. When running frequency is 50Hz, "500" is displayed.
 When the number of motor poles +100 is set in
Pr. 144
, values are displayed in motor speed increments. (When
Pr. 37
= "0")
 To change the display increments to frequency, set the number of motor poles in Pr. 144 . (When Pr. 37 = "0")
 A combination of the Pr. 37 and Pr. 144 settings determines the monitored item and the setting increment as shown in the
table below. (Initial settings are outlined with bold borders)
Purpose Parameter that should be Set
Refer to
Page
Display motor speed
Set speed
Speed display and speed setting Pr. 37, Pr. 144, Pr. 505
132
Change PU monitor display data
Monitor display/PU main display
data selection
Cumulative monitor clear
Pr. 52, Pr. 54, Pr. 170, Pr. 171,
Pr. 268, Pr. 563, Pr. 564, Pr. 891
134
Change the monitor output from
terminal FM
Terminal FM function selection Pr. 54
134
Set the reference of the monitor
output from terminal FM
Terminal FM standard setting Pr. 55, Pr. 56
139
Adjust terminal FM outputs Terminal FM calibration Pr. 900
140
The increments of the motor speed and the monitored items displayed on the operation panel and PU (FR-PU07) can
be switched among frequency, machine speed, etc.
Parameter
Number
Name
Initial
Value
Setting Range Description
37
Speed display
0
0 Speed display, setting
0.01 to 9998

Machine speed at Pr. 505 .
144
Speed setting switchover
104/106

2, 4, 6, 8, 10, 102,
104, 106, 108, 110
Set the number of motor poles when displaying the
frequency.
505
Speed setting reference
100Hz/
150Hz

1 to 200Hz Set the reference speed for Pr. 37 .
Maximum setting value of
Pr. 37
<
16777.215

Pr. 505
setting
Setting value of Pr. 1 (Hz)
Pr. 37
Setting
Pr. 144
Setting
Output Frequency
Monitor
Set Frequency
Monitor
Running Speed
Monitor
Parameter Setting
0
(initial value)
2 to 10 0.01 Hz 0.01 Hz 0.01 Hz
*
0.01 Hz
102 to 110 1 r/min
*
1 r/min
*
1 r/min
*
1 r/min
*
0.01 to 9998
2 to 10 0.001 (Machine speed
*
) 0.001 (Machine speed
*
) 0.001 (Machine speed
*
) 0.01 Hz
102 to 110 0.01 Hz 0.01 Hz 0.01 Hz 0.01 Hz
* Motor speed r/min conversion formula....... frequency

120/number of motor poles ( Pr. 144 )
Machine speed conversion formula ............. Pr. 37

frequency/ Pr. 505 setting (Hz)
For Pr. 144 in the above formula, the value is " Pr. 144 -100" when "102 to 110" is set in Pr. 144 .
Pr. 505 is always set as frequency (Hz).