ABB ACS880 Series, Руководство по прошивке

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Actual input supply voltage.
Uac,rms
If the user-defined reference ( 94.22 is less than the internal reference value ( U
dc,int
),
the control program uses the internal reference as the drive DC voltage reference.
Maximum DC voltage reference ( U
dc,max
)
Udc,max = Ucat,hi × √2 × 1.13
where
Maximum DC voltage reference Udc,max
Upper limit of the largest supply voltage range selection available
for the drive (
95.1 )
Ucat,hi
If the user-defined reference ( 94.22 ) is more than the maximum DC voltage
reference ( U
dc,max
), the control program uses the maximum value as the drive DC
voltage reference.
Maximum drive output voltage
Uac,out = (Udc /√2) × (1 - Ures)
where
Maximum output voltage of the drive Uac,out
Actual DC voltage Udc
Value of parameter 97.4 Ures
The voltage reserve setting ( 97.4 ) limits the maximum drive output voltage.
Limit calculation examples
Example 1: Calculating the internal DC voltage reference and maximum DC voltage
reference
The voltage category is 380 … 415 V and the power line voltage is 400 V.
Internal DC voltage reference U
dc,int
= 400 V × √2 × 1.03 = 583 V.
Maximum DC voltage reference U
dc,max
= 415 V × √2 × 1.13 = 663 V.
Example 2: Calculating the maximum output voltage of the drive
DC voltage is 650 V DC, and the voltage reserve setting ( 97.04) is -2%.
The maximum output voltage of the drive is U
ac,out
= (650 / √2) × (1 + 0.02) = 469 V.
Settings and diagnostics
Program features 125