Chapter 11 Description of Parameter Settings
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C200 Series
11-135
12
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
13~14 NA
15
Direction control at open loop status
0: Switch ON direction control
1: Switch OFF direction control
FOC Bandwidth of Speed Observer
Factory
Setting:40.0
Settings 20.0~100.0Hz
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
Factory
Setting:2.0
Settings 0.0~10.0%fN
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
Factory
Setting:50
Settings 0~1000ms
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
Factory
Setting:100
Settings 0~100% Tr (Tr: rotor time constant)
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
Factory Setting: 20.00
Settings 0.00~100.00Hz
Pr.10-29 is for setting the maximum of frequency deviation.
Reserved
Obeserver Gain
Factory Setting: 600
Settings 0~65535
Call 1(800)985-6929 for Sales
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Call 1(800)985-6929 for Sales
deltaacdrives.com
sales@deltaacdrives.com
