ABB ACS280 Firmware Manual page 281

No. Name/Value
97.04 Voltage reserve
-5...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%
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
the 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. Setting voltage reserve to -5...-4%
will enable full output voltage (motor voltage =
network voltage at rated frequency). This will increase
the current harmonics to the motor and might lead to
motor heating.
Defines the level of flux braking power. (Other
stopping and braking modes can be configured in
21 Start/stop mode
parameter group
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.
WARNING! Using full flux braking heats up the
motor especially in cyclic operation. Make sure
that the motor can withstand this if you have a
cyclic application.
Defines the source of flux reference.
Notes:
• This is an expert level parameter and should not be
adjusted without appropriate skill.
• Do not use this parameter in scalar control mode, if
97.20 U/f ratio
the parameter
Minimum value of parameter
reference
.
97.07 User flux reference
Parameter
Terms and abbreviations
Source selection (see
Defines the flux reference when parameter
reference select
select is set to
Note:
• ABB recommends the range of 20.00%...120.00%.
User-defined flux reference.
Parameters 281
U
= 550 V and
dc
).
Squared
is set to .
97.07 User flux
.
).
97.06 Flux
User flux reference
.
Default
FbEq 16
-2%
1 = 1%
Disabled
0
1
2
User flux
reference
0
1
-
100.00%
100 = 1%