5 - 5
5 Monitor
High-function General-purpose Inverter RX2 Series User’s Manual
5-1 F
re
que
ncy Mo
nito
r
5
5-
1-3 F
requen
cy Conversion Monitor
The frequency conversion monitor displays the value obtained by multiplying the frequency command
(Hz) by coefficient which is set in the Frequency conversion gain [Ab-01]. Use this method when you
want to change the displayed value of data such as motor rotation speed, etc.
Example of conversion of displayed frequency
“Output frequency conversion monitor [dA-06]” = “Frequency command (Hz)” x “Frequency conversion
gain [Ab-01]”
(Example) Displaying the motor rotation speed
The relationship of rotation speed and frequency is as shown below:
Rotation speed N (min
-1
) = (120 x f (Hz))/P (poles)
When the motor frequency is 60Hz and the number of poles is 4, the coefficient is 30; hence at 60Hz,
where [Ab-01]=30.00, “60×30.0=1800 (min
-1
)” will be displayed on the monitor.
Table of sample conversions
Precautions for Correct Use
In this monitor, gain is applied to the output frequency monitor [dA-01].
Parameter
5-1-3
Frequency Conversion Monitor
Motor frequency
(Hz)
Number of motor poles
(P)
Coefficient
[Ab-01]
Synchronous rotation
[min-1]
50
2
60
3000
50
4
30
1500
50
6
15
750
50
8
7.5
375
60
2
60
3600
60
4
30
1800
60
6
15
900
60
8
7.5
450
Item
Parameter
Data
Description
Output frequency
conversion monitor
[dA-06]
0.00 to 59000.00 (Hz)
Converted output frequency is displayed.
Frequency conver-
sion gain
[Ab-01]
0.01 to 100.00
Set the gain of frequency conversion mon-
itor.
Summary of Contents for RX - 2
Page 1: ...High function General purpose Inverter RX2 Series User s Manual I620 E1 01 3G3RX2...
Page 54: ...1 Overview 1 22 High function General purpose Inverter RX2 Series User s Manual...
Page 136: ...2 Design 2 82 High function General purpose Inverter RX2 Series User s Manual...
Page 592: ...8 Applied Settings 8 192 High function General purpose Inverter RX2 Series User s Manual...
Page 754: ...11 Options 11 56 High function General purpose Inverter RX2 Series User s Manual...
Page 794: ...12 Troubleshooting 12 40 High function General purpose Inverter RX2 Series User s Manual...
Page 919: ......
