MD280/MD280N User Manual Parameter Description
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Setup
value
Function Range
0
Running
frequency
0 to maximum output frequency (F0-04 setup value)
1 Setup frequency 0 to maximum output frequency (F0-04 setup value)
2 Output Current 0 to 200% of the rated current of the inverter
3 Output power 0 to 200% of the rated power of the inverter
4 PULSE input 1Hz to 50.0kHz
5 AI1 0V to 10V
6 AI2
0V10V/020mA
7 Length 0 to setup length value (setup value of F7-05)
8 Counting value 0 to setup counting value (setup value of F7-08)
9
Communication
control output
(Refer to MD280 Serial Communication Protocol for
details.)
Zero offset
Factory
default value
0.0%
F3-06
Setup range -100.0% to 100.0%
AO gain
Factory
default value
1.00
F3-07
Setup range -10.00 to 10.00
AO standard output means to output 0 to 0V or (0mA to 20mA), and the
corresponding analog output is 0 to maximum.
AO zero offset coefficient and gain are generally used to modify the zero
drift of the analog output and can also be used to modify the standard
output as analog output value corresponding to any required curve.
If b represents zero offset, k represents k, Y represents actual output, and
X represents standard output, the actual output is calculated as follows:
Y=kXˇb
AO zero offset coefficient 100% corresponds to 10V (20mA).
For example, if the analog output is the running frequency, and it is
expected to output 8V (16mA) when the frequency is 0, and output 3V
(6mA) at the maximum frequency, the standard output 0V to 10V shall be
modified to 8V to 3V output. As per the above formula, AO zero offset
coefficient shall be set to “80%”, while A0 gain shall be set to “-0.50”.
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