134
Speed setting by analog input (terminal 2, 4)
4.13.3 Response level of analog input and noise elimination (Pr. 74)
The above parameter can be set when Pr. 160 Extended function display selection = "0". (Refer to page 144)
Valid for eliminating noise of the speed setting circuit.
Increase the filter time constant if steady operation cannot be performed due to noise.
A larger setting results in slower response. (The time constant can be set between approximately 5ms to 1s with the setting
of 0 to 8.)
6. Stop
Turn OFF the start switch (STF or STR).
[RUN] indicator turns OFF.
REMARKS
Pr. 178 STF terminal function selection must be set to "60" (or Pr. 179 STR terminal function selection must be set to "61").
(All are initial values.)
The motor will not rotate ... Why?
Check that [EXT] is lit.
[EXT] is valid when Pr. 79 = "0" (initial value) or "2."
Use to lit [EXT].
Check that wiring is correct. Check once again.
Change the speed (0r/min) of the minimum value of potentiometer (at 0V initial value)
Adjust the speed in calibration parameter C2 Terminal 2 speed setting bias speed. (Refer to page 135.)
The time constant of the primary delay filter can be set for the external speed command (analog input (terminal 2, 4)
signal).
Parameter
Number
Name Initial Value Setting Range Description
74 Input filter time constant
10 to 8
Primary delay filter time constant for the
analog input.
A larger setting results in a larger filter.
Operation
Display
Forward
rotation
Reverse
rotation
OFF
