Delta CT2000 Series User Manual page 347

Chapter 12 Description of Parameter SettingsCT2000 Series
1~10
11
12
13
14
15
FOC Bandwidth of Speed Observer

Settings
 Setting speed observer to higher bandwidth could shorten the speed response time but will create
greater noise interference during the speed observation. .
FOC Minimum Stator Frequency

Settings
 This parameter is used to set the minimum level of stator frequency at operation status. This
setting ensures the stability and accuracy of observer and avoid interferences from voltage,
current and motor parameter.
FOC Low-pass Filter Time Constant

Settings
 This parameter sets the low-pass filter time constant of a flux observer at start up. If the motor can
not be activated during the high-speed operation, please lower the setting in this parameter.
FOC Gain of Excitation Current Rise Time

Settings
 This parameter sets the drive's excitation current rise time when activates at senslorless torque
mode. When the drive's activation time is too long at torque mode, please adjust this parameter to
a shorter time constant.
Top Limit of Frequency Deviation

Settings
 Pr.10-29 is for setting the maximum of frequency deviation.
Resolver Pole Pair
Settings
 To use Pr.10-30 function, user must set Pr.10-00=3(Resolver Encoder) first.
NA
Activate DC braking when executing zero torque command
0:ON , 1:OFF
FOC Sensorless mode, cross zero means speed goes from negative to
positive or positive to negative (forward to reverse direction or reverse to
forward direction). 0: determine by stator frequency , 1: determine by speed
command
NA
NA
Direction control at open loop status
0: Switch ON direction control 1: Switch OFF direction control
20.0~100.0Hz
0.0~10.0%fN
1~1000ms
33~100% Tr (Tr: rotor time constant)
0.00~200.00Hz
1~50
12.1-10-6
Factory Setting:40.0
Factory Setting:2.0
Factory Setting:50
Factory Setting:100
Factory Setting: 20.00
Factory Setting: 1