VM1000 Series
‐58‐
4.4 Common Control Guideline
4.4.1 Multi- step Speed Control
(1) Multi-step Speed
It indicates the selection of VFD preset out frequency is completed by the DI
input terminals. It supports a maximum of 16 preset value.Usually, this mode is used
for switching multiple operation speed in turn. It often applied in escalator,conveyor
and large washing equipment etc.
(2) Typical wiring
The following is the wiring diagram of multi- step speed mode that adopt DI2 and
DI3
Figure 4-3 VM1000 FWD Multi-step Speed Control
(3) Parameter setting
This application is the control terminal control; start/stop can be 2-wire or 3-wire.
Control parameters can be found in the above Table 4-4. Table 4-6 is the parameter
example of Figure 4-3 that adopts two DI terminals at 4- step speed
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