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Page 66
Vacon
Pump and fan control with autochange
8 Commissioning of pump- and fan control application
General
1.
Set motor name plate data, supply voltage and other parameters if necessary.
2.
Set the number of auxiliary drives
3.
If needed change the start and stop limits of the auxiliary drives as well as start
and stop delays of auxiliary drives
Autochange not in use
4A.
Program the relay outputs and digital output according to the number of auxiliary
drives. Set own output for each drive with parameters 3.6 - 3.8.
The value of the parameter will be Aux. drive 1, Aux. drive 2 or Aux. drive 3
Autochange in use
4B.
Program the relay outputs and digital output according to the number of auxiliary
drives by setting values of parameters 3.6 - 3.8 to:
3.6 = Autochange 3 control (27) , Digital output
3.7 = Autochange 1 control (26) , Relay output 1
3.8 = Autochange 2 control (26) , Relay output 2
If the Autochange is only with auxiliary drives (par. 9.27 =1) then the outputs are
auxiliary drive control signals. In the beginning the Autochange 1 control is the
control signal of the first auxiliary drive.
If all drives are included to the autochange (par. 9.27 = 2) then the outputs are
control signals of the frequency converter controlled drive and auxiliary drives. In
the beginning the Autochange 1 control is the control signal of the frequency
converter controlled drive
5B.
Program the autochange interval (par. 9.28) and proper capacity level (par. 9.29
and par 9.30) that can be in use when the Autochange happens.
6B.
If interlocks are used then set the function active with parameter 9.31. Program
own interlock input for each drive. If I/O-expander is in use it has interlock inputs
as constant and the inputs of basic control board are not needed.