Vacon NX series Applications Manual page 282

VACON · 282
Fig. 56: Start pulse/ Stop pulse
A) Stop function (ID506) = coasting
B) If Start and Stop pulses are simultaneous the Stop pulse overrides the Start pulse
364 REFERENCE SCALING, MINIMUM VALUE, PLACE B3 (2.2.18)
365 REFERENCE SCALING, MAXIMUM VALUE, PLACE B3 (2.2.19)
See parameters ID303 and ID304 above.
366 EASY CHANGEOVER 5 (2.2.37)
Table 140: Selections for parameter ID366
Selection
number
0 Keep reference
1 Copy reference
If Copy reference has been selected it is possible to switch from direct control to PID control
and back without scaling the reference and actual value.
For example: The process is driven with direct frequency reference (Control place I/O B,
fieldbus or keypad) to some point and then the control place is switched to one where the PID
controller is selected. The PID control starts to maintain that point.
It is also possible to change the control source back to direct frequency control. In this case,
the output frequency is copied as the frequency reference. If the destination place is Keypad
the run status (Run/Stop, Direction and Reference) will be copied.
8
f
out
REV
DIN4
Start
DIN5
Stop
Selection name
A B
Description
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PARAMETER DESCRIPTIONS
t