ABB ACS880 Firmware Manual page 615

No. Name / Range /
Selection
97.5 Flux braking
Disabled
Moderate
Full
97.6 Flux reference select
Zero
User flux reference
Other [value]
97.7 User flux reference
0.00 ... 200.00 %
97.8 Optimizer minimum
torque
0.0 ... 1600.0 %
97.9 Switching freq mode
Normal
Low noise
Description
Defines the level of flux braking power. (Other stopping
and braking modes can be configured in parameter
group 21 Start/stop mode).
See section Flux braking (page
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 97.7 User flux
See Terms and abbreviations (page
Defines the flux reference when parameter
reference select is set to
User-defined flux reference.
This parameter can be used to improve the control
dynamics of a synchronous reluctance motor or a
salient permanent magnet synchronous motor.
As a rule of thumb, define a level to which the output
torque must rise with minimum delay. This will increase
the motor current and improve the torque response at
low speeds.
Optimizer torque limit.
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.
Note: Other settings than
Refer to the rating data in the hardware manual of the
drive.
Note: To improve the control performance, the
switching frequency reference is automatically
increased with ABB sine filter if the motor/drive current
ratio is less than 0.55.
Control performance optimized for long motor cables.
Minimizes motor noise.
105).
reference.
169).
97.6 Flux
User flux reference.
Normal may require derating.
Parameters 615
Def / Type
FbEq 16b / 32b
Disabled / uint16
0
1
2
User flux reference /
uint32
0
1
100.00 % / real32
100 = 1 % / 100 = 1 %
0.0 % / real32
10 = 1 % / 10 %
Normal / uint16
0
1