Motor Control - ABB +N5600 Firmware Instructions

No. Name/Value
96.108 LSU control board
boot
0...1
97

97 Motor control

97.01 Switching
frequency reference
0.000 ... 24.000
kHz
97.02 Minimum switching
frequency
0.000 ... 24.000
kHz
97.03 Slip gain
0 ... 200%
97.04 Voltage reserve
-4 ... 50%
Description
(Only visible when IGBT supply unit control activated by
95.20)
Changing the value of this parameter to 1 reboots the supply
control unit (without requiring a power off/on cycle of the drive
system).
The value reverts to 0 automatically.
1 = Reboot the supply control unit.
Motor model settings.
Defines the switching frequency when it is not otherwise
being internally limited.
Note: This is an expert level parameter and should not be
adjusted without appropriate skill.
Switching frequency reference.
Defines a minimum switching frequency reference. The
actual switching frequency will not fall below this limit under
any circumstances.
Notes:
• This is an expert level parameter and should not be
adjusted without appropriate skill.
• The drive has internal switching frequency limits that may
override the value entered here.
Minimum switching frequency.
Defines the slip gain which is used to improve the estimated
motor slip. 100% means full slip gain; 0% means no slip gain.
The default value is 100%. Other values can be used if a
static speed error is detected despite having the setting at full
slip gain.
Example (with nominal load and nominal slip of 40 rpm): A
1000 rpm constant speed reference is given to the drive.
Despite having full slip gain (= 100%), a manual tachometer
measurement from the motor axis gives a speed value of 998
rpm. The static speed error is 1000 rpm - 998 rpm = 2 rpm. To
compensate the error, the slip gain should be increased to
105% (2 rpm / 40 rpm = 5%).
Slip gain.
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.
Parameters 489
= 550 V and the
dc
Def/FbEq16
0
1 = 1
4.500 kHz
1000 = 1 kHz
1.500 kHz
1000 = 1 kHz
100%
1 = 1%
-2%
1 = 1%