gefran VDI100 Series Instruction Manual page 237

be pressed for the inverter to accept the modified reference frequency.
11-56= 1: Changing the reference frequency on the keypad in UP/DOWN control immediately changes the
reference frequency and there for the output frequency.
Note:
The reference frequency can be changed (up or down) via the keypad or by setting one of multi-functional digital input
terminals (03-00, 03-07) to 8 and 9. Refer to instructions of (03-00 - 03-07 = 8 or 9).
Code Parameter Name / Range
11-58 Record reference frequency
0: Disable
1: Enable
This function is enabled only when one of multi-function digital input terminals (03-00 to 03-07) is set to 11
(ACC / DEC disabled) or to 8 and 9 (up / down).
11-58= 0: When ACC / DEC is enabled, frequency command is set to 0 Hz when stop command and power cut
is reset. When ACC / DEC is disabled, frequency command will set to original frequency.
11-58= 1: When ACC / DEC is enabled, the output frequency will be recorded. When it switches to stop or
power cut is reset and ACC / DEC is still enabled, the frequency command is still recorded and the frequency
command is set to the frequency that was recorded. When ACC / DEC is disabled, the recorded frequency will
be erased. Please refer to the following figure.
Code Parameter Name / Range
11-59 Gain of Preventing Oscillation
0.00~2.50
It is used to adjust preventing oscillation function.
If the oscillation in driving motor occurs at normal duty, it is required to increase the setting value gradually in
the unit of 0.01.
Code Parameter Name / Range
11-60 Upper Limit of Preventing Oscillation
0~100 %
It is required to limit the preventing oscillation upper limit within the setting value.
Code Parameter Name / Range
11-61 Time Parameter of Preventing Oscillation
0~100
Adjust the response of oscillation function. (Time parameter of adjust preventing oscillation function delay.)
VDI100 • Instruction manual
Power
Supply
ON
Forward
Run
Inhibit
ACC / DEC
Command
Frequency
Fref 1
Reference
Fref 1
Output
Frequency
Hold
OFF ON
t
t
t
Fref
2
Fref
3
t
Fref
2
t
Hold
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