Quattro DC MS Pwr Cnvrt A4 Submenu
56
Parameter Description Units Default Range
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GAIN
BANDWIDTH A
(Gain Bandwidth Armature) If GAIN
SELECTION (A4) is set to MANUAL,
this parameter is used to convert ARM
RESISTANCE (A4) and ARM
INDUCTANCE (A4) into the integral and
proportional gains used by the current
regulator.
If GAIN SELECTION is set to USE
SELF TUNE, this parameter is used to
convert AUTO MEAS ARM R (D2) and
AUTO MEAS ARM L (D2) into the
integral and proportional gains used by
the current regulator. The higher the
setting, the more faithfully the regulator
will duplicate its input command,
however, too high of a bandwidth can
cause problems such as a rough ride as
the drive is more responsive.
rad/ sec 500
100 – 2000
N N
GAIN
BANDWIDTH F
(Gain Bandwidth Field) If GAIN
SELECTION is set to AUTO-TUNE, this
parameter is used to calculate AUTO
FIELD RES (D2) and AUTO FIELD TC
(D2) into the integral and proportional
gains used by the field regulator. The
higher the setting, the more faithfully the
regulator will duplicate its input
command, however, too high of a
bandwidth can cause problems such as
a rough ride as the drive is more
responsive.
This parameter is not used when GAIN
SELECTION (A4) = MANUAL.
rad/sec 5 1 – 40
N N
SPD MODEFILT
BW
(Speed Mode Filter Bandwidth) This
parameter sets the frequency of an
encoder filter that affects PWM control
at very low motor torque. Care must be
taken when using this parameter as an
inappropriate value may cause speed
instability.
rad/sec 100 5 – 110
N N
PWM
FREQUENCY
(PWM Frequency) This parameter sets
the PWM or ‘carrier’ frequency of the
motor armature portion of the drive.
kHz 6.0 2.5 – 16.0
N N
UV-ALARM
LEVEL
(Undervoltage Alarm Level) This
parameter sets the level at which an
under voltage alarm will be declared.
Units in percent of L-L voltage.
% 90 80 – 99
Y N
UV FAULT
LEVEL
(Undervoltage Fault Level) This
parameter sets the level at which an
under voltage fault will occur. Units in
percent of L-L voltage.
% 80 50 – 99
Y N
FLD CARRIER
FRQ
(Field Carrier Frequency) Allows
modification of PWM frequency to help
eliminate acoustic noise. If the Low
Voltage Field Module is used, this
parameter has no effect. With the Low
Voltage Field Module, the Field Carrier
Frequency is fixed at 40 kHz.
kHz
HiVolt
Fld Mod
3
LoVolt
Fld Mod
40
HiVolt Fld Mod
3 – 10
LoVolt Fld Mod
40
Y N
Table 6: Motor Side Power Convert A4 Submenu
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