5-35
Configuring a reference frequency
[ 1 ] Using
and
keys (F01 = 0 (factory default) or 8)
(1) Set function code F01 at "0" or "8" ( / keys on keypad). This cannot be done when the keypad is in Programming
or Alarm mode. To enable frequency setting using the
and keys, first place the keypad in Running mode.
(2) Press the or key. The 7-segment LED monitor displays the reference frequency and the LCD monitor displays
the related information including the operation guide, as shown below.
Example of Reference Frequency Configuration Screen
(3) To change the reference frequency, press the
or key again. To save the new setting into the inverter's memory,
press the
key (when E64 = 1 (factory default)). When the power is turned ON next time, the new setting will be
used as an initial reference frequency.
In addition to saving with the
key described above, "Automatic saving when the main power is turned OFF" is also
possible (when E64 = 0).
•
When you start accessing the reference frequency or any other parameter with the
and keys, the least
significant digit on the display blinks and starts changing. As you are holding down the key, blinking gradually
moves to the upper digit places and the upper digits becomes changeable.
•
Pressing the
key moves the changeable digit place (blinking), making it easy to change upper digits.
•
Setting function code C30 at "0" (Enable
/ keys on the keypad) and selecting frequency command 2 as
a frequency command source makes it possible to access the reference frequency in the same manner using the
and keys.
•
If you have set function code F01 at "0" ( / keys on keypad) but have selected a frequency command
source other than frequency 1 (i.e., frequency 2, via communications link, or as a multi-frequency), then using
the
or key cannot change the frequency command even if the keypad is in Running mode. Pressing
either of these keys just displays the currently selected frequency command.
•
Setting function code F01 at "8" ( / keys on keypad) enables the balanceless-bumpless switching. When
the frequency command source is switched to the keypad from any other source, the inverter inherits the current
frequency that has applied before switching, providing smooth switching and shockless running.
•
When the frequency command source is other than the digital reference setting, the LCD monitor displays the
following.
Means the keypad takes precedence.
The lowest digit blinks.
Allowable entry range
Operation guide
Means that the keypad is not enabled.
Means that the setting on the analog terminal
[12] is effective. (See the table below.)
Summary of Contents for FRENIC-MEGA
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