Inovance MD300 Series - Page 67

Chapter 6 Parameter Description
-65-
AI
maximum
input
correspon
ding setup
Factory
default
value
100.0%
F3-09
Setup range
-100.0%100.0%
The above function codes define the
relationship between the analog input voltage
and analog input setup value. When the
analog input voltage exceeds the setup
maximum input or minimum input range, the
excess part will be calculated as maximum
input or minimum input.
When the analog input is current input, 1mA
current equals to 0.5V voltage.
In difference applications, 100% of analog
input corresponds to different nominal values.
Refer to all the application parts for details.
Several setting examples are shown in the
following figures:
Corresponding Settings
(Frequency, Torque, etc.˅
Corresponding Settings
(Frequency, Torque, etc.˅
Fig.6-5 Corresponding Relationship between
Analog Reference and Setting Value
AI1 and AI2 have the same corresponding
relationship.
MD300 inverter standard unit provides two
analog input ports.
PULSE
(pulse)
input
maximum
frequency
Factory
default
value
50.00kHz
F3-10
Setup
range
0.00kHz50.00kHz
input
filter time
Factory
default
value
0.01s
F3-11
Setup range 0.01s to 10.00s
This group of function code defines the
corresponding relationship when the pulse is
used as frequency setup mode.
The pulse frequency input can only be input
via DI4 channel.
AOzero
offset
coefficient
Factory
default
value
0.00%
F3-12
Setup range
-100.0%100.0%
AO
gain
Factory
default value
1.00
F3-13
Setup range
-10.0010.00
If “b” represents zero offset, k represents gain,
Y represents actual output, and X represents
standard output, the actual output is: Y=kXˇ
b; 
AO zero offset coefficients 100% corresponds
to 10V˄20mA˅.
Standard output refers to 0 to maximum
analog output corresponding to the output of 0
to10V˄20mA˅.
It is generally used to correct the zero drift
of the analog output and the output
amplitude deviation. It can also be
defined as any necessary output curve.
For example, If the analog output is the
running frequency, it is expected to output 8V
˄16mA˅when the frequency is 0, and output
3V˄6mA˅at the maximum frequency, the gain
shall be set to “- 0.50”, and the zero offset
shall be set to “80%”.
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