VD120 Series Inverter User Manual Parameter Description
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Set the initial value of frequency F0-09 (preset frequency) value. Can bring through a keyboard keys
▲and▼(or multi-function input terminal of the UP/DOWN) to change the set frequency value of the
frequency inverter.
When frequency inverter power on again after power off, set frequency value revert to F0-09 (digital
setting preset frequency) value.
1: Digital setting(memory when power failure)
Set the initial value of frequency F0-09 (preset frequency) value. Can bring through a keyboard keys
▲and▼(or multi-function input terminal of the UP/DOWN) to change the set frequency value of the
frequency inverter.
When frequency inverter power on again after power off, set frequency is the set frequency that
power off in last time, can bring through a keyboard keys ▲and▼(or multi-function input terminal of
the UP/DOWN) correction by memory.
What need reminds is, F0-17 is “digital set frequency stop memory selection”, F0-17 is used to select
the frequency correction is memory or reset when inverter stop. F0-17 is associated with downtime,
not related to the power lost memory, should pay attention to in the application.
2: AI1
Refers to the frequency by the analog input terminal to determine. VD120 control panel provides one
analog input terminal (AI1).
Among them, AI1 for -10V~10V voltage input, can also be used to 0mA/4mA~20mA current input,
select by AI1 jump line on control panel.
AI1 input voltage values of the corresponding relationship with the target frequency, users are free to
selection. VD120 provide 5 set of corresponding relation curve, 3 groups of curve for linear
relationship (2 points correspondence), 2 set of curves for the corresponding relation of 4 point any
curve, user can be set by F5 group function code.
Function code F5-20 used to set the AI1 analog input, select 5 groups respectively in a curve, and 5
curve’s corresponding relation please refer to the F5 group function code.
5: PULSE setting (HDI1)
Frequency is given by terminal pulse setting.
Pulse signal given specifications: voltage range 9V~30V and frequency range of 0kHz~100kHz.
Pulse can only be given from multi-function input terminal DI5/HDI1 input, then need the set DI5/HDI1
terminal function for 23.
DI5/HDI1 terminal input pulse frequency and the corresponding set of relations, through the
F5-37~F5-40 setting, the corresponding relations of 2 points of straight line, the corresponding set of
input pulses 100.0%, is refers to the relative maximum frequency F0-10 percentage.
6: MS reference
Select MS reference operation mode, need through the digital quantity input DI terminal state of
different combination, corresponding to different set frequency values. VD120 can set up more than 4
MS reference terminal, the 16 kinds of sate of 4 terminals by FC group function code corresponding
to the arbitrary 16 “MS reference”, “MS reference” is relatively maximum frequency F0-10 percentage.
When DI digital quantity input terminals as MS reference terminal function, need to do accordingly
setting in the F5 group, specific content please refer to the related function parameters of F5 group.
7: Simple PLC
When frequency source is simple PLC, the operation frequency source of inverter can be in 1~16
arbitrary frequency switching between operation instruction, holding time 1~16 frequency instructions,
their respective deceleration time can also be user settings, specific content reference FC group of
related instructions.
8: PID
The selection process of PID control output as the running frequency. Commonly used in the scene of
the closed loop technology, such as constant pressure closed loop control, constant tension
closed-loop, etc.
Application of PID as frequency source, you need to set up FA group (PID function parameter group)
Summary of Contents for VD120 Series
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