Frequency Reference; Function Description - Siei QUIX.-2M-0004 Manual De Instrucciones

INVERTER PARAMETERS

Function description:

Frequency reference

P
ARA
F
UNCTION
METER
Determines the
P-00 P-00
P-00 P-00 P-00
inverter operation
frequency
Indicates the
P-01 P-01 P-01 P-01 P-01
max. operation
frequency
When selecting the analog input, it is possible to change the formula that transforms the reference input signal into
the motor supply frequency through the following parameters:
P-14
P-15
b-04
Example: with P-00 = 1 the reference is the voltage analog signal type 0/10 V:
Direct formula: b-04=0
F rif
P15>1
P01
P15=1
P14
0
Frif = P14 + (
F rif
P15>1
P01
0
P14
Vrif (f=0) = (10 / P15) * ( P14 / (P14 - P01 ))
By configuring the two digital inputs as frequency switches ( P42=1 and P 43=2), it is possible to recall
the frequencies set via the F parameters:
I
NPUTS
I
n SF1 In SF2
P-00 = 0 o P-00 P-00 P-00 P-00
0 0
the reference frequency is read by the analog input
1 0
the frequency reference is the frequency
0 1
the frequency reference is the frequency
1 1
the frequency reference is the frequency
22-GB
VA
R
ANGE
LUE
[ D ]
EFAULT
0 - 4
Each parameter value correspond to a different reference:
0 analog input: REF-V (0/10V with 1-2 in J11; 0-20mA with 2-3)
[ 0 ]
1 analog input: REF-V (-/+10V) - the polarity states the rotation
direction
the values 5,6,7,8
2 Analog input: REF-I (0/20mA [b-05=0] or 4/20mA [b-05=1] )
are not used
3 it selects the frequency set by the F-00 parameter
4 input from serial line with 0.01 Hz resolution
9 motorized potentiometer reference
The set value is the full scale value for the analog inputs and for
50.0 - 480.0
the variables of the F menu.
[ 50,0 ] (Hz)
determines the minimum frequency (offset); it can assume negative values too.
it is a gain multiplicative factor G= P15* (P01-P14)/10.
enables the formula reversal (a minimum signal corresponds to a maximum frequency).
P15=1
P15<1
10 V
( P01 - P14 )
* P15 ) * Vrif
10
P15=1
P15<1
10 V
In any case Frif is always limited between P-73 and P-01.
D
ESCRIPTION
P00 P00 P00 = 1 P00 P00
D
Inverse formula: b-04=1
with P14 > 0
F rif
P01
P15>1
P14
0
Vrif = 10 / P15
with P14 < 0
F rif
P01
0
P14
Vrif (f=P01) = (P14/(P14-P01)) * (10 / P15)
F-01 F-01
F-01 F-01 F-01
F-02 F-02 F-02
F-02 F-02
F-03 F-03 F-03 F-03 F-03
—————— SIEI ——————
ESCRIPTION
( P01 - P14 )
Frif = P01- (
10
P15<1
P15=1
10 V
( P01 - P14 )
Frif = ( P01- P14 ) - (
10 V
Vrif (f=0) = 10 / P15
NOTE.
in the table:
1 means closed contact,
0 means open contact;
a non-used input is considered
as 0.
A
SSOCIATED
PARAMETERS
P-01
P-14
P-15
b04
* P15) * Vrif
* P15) * Vrif
10