VD120 Series Inverter User Manual Parameter Description
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Multi-reference can be used in three occasions: as the frequency source, the voltage source of V/F
separation and the set source of process PID.
Under three kinds of applications, the dimension of the multi reference is relative value, the range of
-100.0%~100.0%, when as the frequency source it is relative to the percentage of the maximum
frequency; when as the V/F separation voltage source, is relative to the percentage of the rated motor
voltage; and because PID is given as a relative value, the multi-reference as set source of PID don't
need a dimensional transformation. Multil-reference need according to the different status of
multi-function digital DI, switch selection, specific please refer to the related instructions of F5 group.
FC-16
Simple PLC Run Mode
0: Stop when single run end
1: Keep the final value when single run
end
2: Always circulation
0
○
Simple PLC has two functions: as frequency source or as a voltage source of V/F separation.
The following figure is a simple PLC as the frequency source. When simple PLC as frequency source,
the positive and negative of FC-00~FC-15 to determine the running direction, if the negative value
indicates that the frequency inverter is running in the opposite direction.
Time(t)
DO or relay
output
250ms pulse
output
Running
direction
FC-19
FC-21
FC-23
FC-18 FC-20
FC-01
FC-00
FC-02
FC-14
FC-15
Fig 6-33 Schematic diagram of simple PLC
As a frequency source, PLC has three operation modes, as a V/F separation voltage source does not
have this three ways. Among them:
0: Signal run end stop
After completing a single cycle inverter automatically stop, need operation command given to start
again.
1: Single run end terminal
After completing a single cycle, inverter automatically keep the running frequency and direction of the
last stage.
2: Always circulating
After completion of a cycle, the frequency inverter automatically starts the next cycle, until the stop
command is stopped.
Summary of Contents for VD120 Series
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