VM1000 Series
‐59‐
Function
code
Name Setting Instruction Note
F5.01
DI2 terminal
function
Setting range:0～50
12～15 indicates multi-step speed
1～4
Modify the setting as 12,
namely DI2 is Multi-step
speed 1
F5.02
DI3
terminal
function
Setting range:0～50
12～15 indicates multi-step
speed 1～4
Modify the setting as 13,
namely DI3 is Multi-step
speed 2
FD.00
Multi-step
speed 0
-100.0%~100.0% (100.0% refers
to maximum frequency F0.10)
Setting according to the
applied requirements
FD.01
Multi-step
speed 1
-100.0% ～ 100.0%
Setting according to the
applied requirements
FD.02
Multi-step
speed 2
-100.0% ～ 100.0%
Setting according to the
applied requirements
FD.03
Multi-step
speed 3
-100.0% ～ 100.0%
Setting according to the
applied requirements
Table 4-6 FWD Control Parameter at Multi-step Speed
4.4.2 PID control
(1)PID control
It refers to PID algorithm- a control mode that is used for conducting process
adjustment on controlled objects. In this mode, the VFD output is used to adjust
some physical quantities such as speed, temperature, pressure, flow, etc., and the
corresponding target values can be set via digital, analog given, and other
communications given. It is often used in variable frequency air compressor,
draw-bench, constant-pressure water supply, HVAC, and so on.
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