Mitsubishi Electric FR-D720S SC EC, Instruction Manual

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Setting for the parameter unit and operation panel Parameter
6 - 284
6.21.4 Magnitude of frequency change setting (Pr. 295)
When setting the set frequency with the digital dial, frequency changes in 0.01Hz increments in
the initial status. Setting this parameter increases the magnitude of frequency which changes
according to the rotated amount of the digital dial, improving operability.
The above parameter can be set when Pr. 160 = 0.
The above parameter allows its setting to be changed during operation in any operation mode
even if "0" (initial value) is set in Pr. 77 "Parameter write selection".
쑶
Pr. No. Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
295
Magnitude of fre-
quency change setting
0
0 Function invalid —
0.01
The minimum varying width when the
set frequency is changed by the set-
ting dial can be set.
0.1
1
10
Example
쑴
When "1.00Hz" is set in Pr. 295, one click (one dial gauge) of the setting dial changes the
frequency inincrements of 1.00Hz -> 2.00Hz -> 3.00Hz.
I001844E
Fig. 6-146: Magnitude when parameter 295 is set to "1.00"
NOTES When machine speed display is selected with Pr. 37, the minimum increments of the magni-
tude of change is determined by Pr.295 as well. Note that the setting value may differ as
speed setting changes the set machine speed and converts it to the speed dislay again.
When the set frequency (speed) is 100 or more, frequency is displayed in 0.1 increments.
Therefore, the minimum varying width is 0.1 even when Pr. 295 < 0.1.
When the machine speed setting is 1000 or more, frequency is displayed in 1 increments.
Therefore, the minimum varying width is 1 even when Pr. 295 < 1.
For Pr. 295, unit is not displayed.
This parameter is valid only in the set frequency mode. When other frequency-related para-
meters are set, it is not activated.
When 10 is set, frequency setting changes in 10Hz increments. Note the excess speed (in
potentiometer mode).
1 click 2 clicks 3 clicks
One rotation of the setting dial equals to 24 clicks (24 dial gauses).