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Page 24 Vacon
Pump and fan control with autochange
2. 15 PI-controller reference signal (place A)
0 Analogue voltage reference from terminals 2—3, e.g. a potentiometer
1 Analogue current reference from terminals 4—5, e.g. a transducer.
2 Panel reference is the reference set from the Reference Page (REF).
Reference r2 is the PI-controller reference, see chapter 6.
3 Reference value is changed with digital input signals DIA2 and DIA3.
- switch in DIA2 closed = frequency reference increases
- switch in DIA3 closed = frequency reference decreases
Speed of the reference change can be set with the parameter 2. 3.
4 Same as setting 3 but the reference value is set to the minimum frequency
(par. 1. 1) each time the frequency converter is stopped. When value of the
parameter 1. 5 is set to 3 or 4, value of the parameter 2.1 is automatically set
to 4 and value of the parameter 2. 2 is automatically set to 10.
5 Analogue voltage signal from the terminals 202—203 of the I/O-expander
6 Analogue signal from the terminals 204—205 of the I/O-expander
- current signal, Vacon CX 100 OPT
- voltage signal, Vacon CX 102 OPT
7 Fieldbus signal
2. 16 PI-controller actual value selection
0 Actual value 1
1 Sum of Actual value 1 and Actual value 2
2 Difference of Actual value 1 and Actual value 2
3 Multiplication of Actual value 1 and Actual value 2
4 Minor of signals Actual value 1 and Actual value 2 is active actual value
5 Major of signals Actual value 1 and Actual value 2 is active actual value
6 Mean value of Actual value 1 and Actual value 2 signals
7 Sum of square roots from Actual value 1 and Actual value 2
2. 17 Actual value 1
2. 18 Actual value 2
0 No signal
1 Analogue voltage reference from terminals 2—3
2 Analogue current reference from terminals 4—5
3 Analogue voltage signal from the terminals 202—203 of the I/O-expander
4 Analogue signal from the terminals 204—205 of the I/O-expander
- current signal, Vacon CX 100 OPT
- voltage signal, Vacon CX 102 OPT
5 Fieldbus signal
2. 19 Actual value 1 minimum scale
Sets the minimum scaling point for Actual value 1. See figure 6-4.
2. 20 Actual value 1 maximum scale
Sets the maximum scaling point for Actual value 1. See figure 6-4.
2. 21 Actual value 2 minimum scale
Sets the minimum scaling point for Actual value 2. See figure 6-4
2. 22 Actual value 2 maximum scale
Sets the maximum scaling point for Actual value 2. See figure 6-4