Veichi AC100-T3-1R5G Manual page 123

AC100 HIGH-PERFORMANCE VC INVERTER MANUAL
decreasing integral time. But if integral time is too short, there would be surge. Usually, adjust proportional gain firstly,
and then adjust integral time.
Note: If ASR proportional gain is too big and ASR integral time is too small, over voltage may happen from
system start to high speed quickly (without extra braking resistance or braking unit). It is caused by energy
feedback reborn and it can be avoided by adjusting ASR proportional gain and ASR integral time.
ASR proportional gain and ASR integral time adjustment at high/low speed: Set ASR switching frequency [F6.04]
and [F6.09] when there's quick response requirement for load at high/low speed.
Usually increasing proportional gain and decreasing integral time to improve response at low frequency running.
Adjusting steps: Select right switching frequency [F6.04] and [F6.09]. The first group of ASR parameter is valid when
output frequency is under switch frequency 1 [F6.04]. The second group of ASR parameter is valid when output
frequency is between switch frequency 1 [F6.04] and switch frequency 2 [F6.09]. Parameter linearly transits from
switch frequency 1 [F6.04] to switch frequency 2 [F6.09] pro rate. Adjust ASR proportional gain 1 [F6.00] and ASR
integral time 1 [F6.01] at low speed to ensure no surge and good response. Adjust ASR proportional gain 2 [F6.05] and
ASR integral time 2 [F6.06] at high speed to ensure no surge and good response.
Usually, ASR differential coefficient time does not need to set. It is used to restrain sudden speed change. If it is too big,
system surge comes easily.
F6.10 VC slip compensation coefficient
Used in occasion that needs quick response and high speed accuracy. Adjust this parameter properly, the system
response can be improved and stable speed error can be eliminated.
F6.11 Speed control Max output torque
Used to adjust the upper limit of output torque in speed control mode and vector control. 100.00% corresponding to
rated current.
Constant power area torque
F6.12
compensation start frequency
Constant power area torque
F6.13
compensation coefficient
Constant power area torque compensation start frequency: when setting inverter under VC control, switching to the
torque constant power zone limit value of starting frequency; it's 100.00% corresponding to motor rated frequency.
Constant power area torque compensation coefficient: Set coefficient of torque compensation in constant power
area. Appropriate reducing of the value can effectively prevent the motor from losing speed in weak magnetic field.
Constant power area limit start
F6.14
frequency
F6.15 Constant power area limit value
Constant power area limit start frequency: Set to switch to start frequency of torque limitation in constant power area
under VC control. 100.00% is corresponding to motor rated frequency.
Constant power area limit value: Set limitation of torque in constant power area. It can effectively anti motor stall at
weak magnetic area by reduce this limitation properly.
Setting range: 0-250%
Setting range: 20.0-250.0%
Setting range: 100.0-500.0%
Setting range: 0-100%
Setting range: 100.0%-500.0%
Setting range: 50-200%
120
FUNCTION PARAMETER SPECIFICATION
Factory default 100%
Factory default 150.0%
Factory default: 120.0%
Factory default : 30%
Factory default : 200.0%
Factory default : 120%