Instruction manual

The input analog signal (0 to 10V or 4mA to 20mA) for the CN2
terminal of the JVOP-140 digital operator can be used as an auxiliary
function for the main speed frequency reference input to the control
circuit terminals (FR or RP). Refer to the block diagram on page111
for details of the input signal.
When using the signal for the CN2 terminal of the JVOP-140 digital operator as
a multi-function analog input, never use it for the target value or the feedback
value of PID control. (PID control is disabled when n128 is set to 0.)
76
Using multi-function analog input ( n077, n078, n079 )
Multi-function input selection (n077)
n077 setting
Setting Function
Description
0
1
2
Disabled The multi-function input is desabled.
When frequency reference 2 is selected
in multi-step speed reference, the input
analog signal for the CN2 terminal
becomes the frequency reference. The
n025 setting becomes invalid.
Note: Set frequency reference gain to
n068 or n071, and frequency
reference bias to n069 or n072.
Auxiliary frequency
reference (FREF2)
Set the FGAIN to constant n060 or n074
and the FBIAS to constant n061 or n075
for the main speed frequency reference.
Then, multiply the resulting frequency
reference by the FGAIN.
Frequency reference gain
(FGAIN)
3
Set the FGAIN to constant n060 or n074
and the FBIAS to constant n061 or n075
for the main speed frequency reference.
Then, add the FBIAS to the resulting
frequency reference.
The amount of the FBIAS to be added is
set to n79.
Frequency reference bias
(FBIAS)
4
Add the VBIAS to the output voltage
after V/f conversion.
Output voltage bias
(VBIAS)
No.
n077
Name
Multi-function
input selection
Unit
–
Setting
Range
0 to 4 0
Initial
Setting
NOTE