ABB ACS880 Series Firmware Manual page 403

No. Name/Value
97.04 Voltage reserve
-4 ... 50%
97.05 Flux braking
Disabled
Moderate
Full
97.06 Flux reference
select
Zero
User flux reference
Other
97.07 User flux reference
0.00 ... 200.00%
97.09 Switching freq
mode
Normal
Low noise
Cyclic
Custom
Description
Defines the minimum allowed voltage reserve. When the
voltage reserve has decreased to the set value, the drive
enters the field weakening area.
Note: This is an expert level parameter and should not be
adjusted without appropriate skill.
If the intermediate circuit DC voltage U
voltage reserve is 5%, the RMS value of the maximum output
voltage in steady-state operation is
0.95 × 550 V / sqrt(2) = 369 V
The dynamic performance of the motor control in the field
weakening area can be improved by increasing the voltage
reserve value, but the drive enters the field weakening area
earlier.
Voltage reserve.
Defines the level of flux braking power. (Other stopping and
braking modes can be configured in parameter group
Start/stop mode).
See section Flux braking
Note: This is an expert level parameter and should not be
adjusted without appropriate skill.
Flux braking is disabled.
Flux level is limited during the braking. Deceleration time is
longer compared to full braking.
Maximum braking power. Almost all available current is used
to convert the mechanical braking energy to thermal energy
in the motor.
Defines the source of flux reference.
Note: This is an expert level parameter and should not be
adjusted without appropriate skill.
None.
Parameter 97.07 User flux
Source selection (see Terms and abbreviations
Defines the flux reference when parameter
reference select is set to
User-defined flux reference.
An optimization setting for balancing between control
performance and motor noise level.
Note: This is an expert level parameter and should not be
adjusted without appropriate skill.
Control performance optimized for long motor cables.
Minimizes motor noise.
Note: This setting requires derating. Refer to the rating data
in the Hardware manual.
Control performance optimized for cyclic load applications.
Note: This setting is not suitable for long motor cables.
This setting is to be used by ABB-authorized service
personnel only.
Note: This setting may require derating. Refer to the rating
data in the Hardware manual.
= 550 V and the
dc
(page 63).
reference.
on page 112). -
97.06 Flux
User flux reference.
Parameters 403
Def/FbEq16
-2%
1 = 1%
Disabled
21
0
1
2
User flux
reference
0
1
100.00%
100 = 1%
Normal
0
1
2
3