ABB ACS880 Firmware Manual page 299

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...200%
97.10 Signal injection
Disabled
Enabled (5 %)
Enabled (10 %)
Enabled (15 %)
Enabled (20 %)
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).
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.
Enables the anti-cogging function: a high-frequency
alternating signal is injected to the motor in the low speed
region to improve the stability of torque control. This removes
the "cogging" that can sometimes be seen as the rotor passes
the motor magnetic poles. Anti-cogging can be enabled with
different amplitude levels.
Notes:
• This is an expert level parameter and should not be
adjusted without appropriate skill.
• Use as low a level as possible that gives satisfactory
performance.
• Signal injection cannot be applied to asynchronous
motors.
Anti-cogging disabled.
Anti-cogging enabled with amplitude level of 5%.
Anti-cogging enabled with amplitude level of 10%.
Anti-cogging enabled with amplitude level of 15%.
Anti-cogging enabled with amplitude level of 20%.
= 550 V and the
dc
reference.
on page 88).
97.06 Flux
User flux reference.
Parameters 299
Def/FbEq16
-2%
1 = 1%
Disabled
21
0
1
2
User flux
reference
0
1
-
100%
100 = 1%
Disabled
0
1
2
3
4