Vacon NX series Applications Manual page 349

PARAMETER DESCRIPTIONS
If the number of running auxiliary drives is smaller than the value of parameter ID1030
•
the autochange function can take place.
If the number of running auxiliary drives is equal to the value of parameter ID1030 and
•
the frequency of the controlled drive is below the value of parameter ID1031 the
autochange can take place.
If the value of parameter ID1031 is 0.0 Hz, the autochange can take place only in rest
•
position (Stop and Sleep) regardless of the value of parameter ID1030.
f
out
Par. ID1031
Autochange
level,
frequency
Autochange interval
Aux. drive
1 control
Aux. drive
2 control
Fig. 88: Autochange interval and limits
1032 INTERLOCK SELECTION 7 (2.9.23)
With this parameter you can activate or deactivate the feedback signal from the drives. The
interlock feedback signals come from the switches that connect the motors to the automatic
control (AC drive), directly to the mains or place them to off-state. The interlock feedback
functions are connected to the digital inputs of the AC drive. Program parameters ID426 to
ID430 to connect the feedback functions to the digital inputs. Each drive must be connected
to its own interlock input. The Pump and fan control controls only those motors whose
interlock input is active.
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Par. ID1030 = 1
Max.number of
auxiliary drives
Par. ID1029
Autochange moment
Par. ID1029
Autochange interval
VACON · 349
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