ABB ACS880 - Limits

Limits
There are two types of limitations that you must take into account when you use the DC
voltage boost function: limitations to the DC voltage reference and the limitation to the
drive output voltage.
The drive calculates the minimum and maximum limits for the User DC voltage reference
(94.22). The calculation is based on the actual supply voltage and the upper limit of the
largest supply voltage range selection available for the drive (95.1). Limits are:
1. Minimum limit: Internal DC voltage reference (U
dc,int
).
2. Maximum limit: Maximum DC voltage reference (U
dc,max
).
For more information, see the table below and sections Internal DC voltage reference
(U
dc,int
) and Maximum DC voltage reference (U
dc,max
).
This table summarizes the limits to the user-defined DC voltage reference and to the
drive output voltage.
Maximum drive
output voltage with
parameter 97.4 de-
fault value
Maximum DC
voltage reference
(U
dc,max
)
Internal DC voltage
reference (U
dc,int
)
1)
95.1 selectionDrive
type
479 V663 V553 V380…415 VxxxA-3
576 V799 V553 V380…415 VxxxA-5
641 V440…480 V
728 V500 V
795 V1102 V764 V525…600 VxxxA-7
981 V660…690 V
1)
See section Internal DC voltage reference (U
dc,int
).
Internal DC voltage reference (U
dc,int
)
U
dc,int
= U
ac,rms
× √2 × 1.03
where
Internal DC voltage reference
U
dc,int
86 Program features