Torque Control Parameters; Over Excitation Braking Gain; Over Excitation Braking Amplitude Limit; Motor Constant Power Area Power Limit - Veichi AC300 Series Technical Manual

AC300 Series Vector Control Inverter Manual
F06.20 Compensation limit Setting range:0.0~100.0%
F06.21 Compensation effective range Setting range:0.0~100.0%
Position compensation on can accurately obtain the position of motor start
F06.22

Over excitation braking gain

F06.23

Over excitation braking amplitude limit

AM VC control is valid,.The over excitation function can realize much more quickly DEC control and no over-voltage.
The higher over excitation is, the faster response is. Braking limit corresponds to motor rated excitation,the greater limit
is, the better braking effect is. However, the excessive limit will make the motor temperature rise when DEC.Only in
good heat radiation condition ,this value can be properly increased .
F06.24 Vector control energy saving function
F06.25 Energy saving control gain
F06.26 Energy saving control low-pass filter
Vector control energy saving function:
0: off
1: On, only valid at constant speed
2: On, valid at constant speed, acceleration and deceleration
The asynchronous machine vector control is effective. When the energy-saving operation is performed, the output
current is automatically reduced by analyzing the torque output, so that the heating loss of the motor is reduced to
achieve the energy-saving effect.
F06.27

Motor constant power area power limit

While under VC control,it can control the output power of motor shaft.If the motor runs at low/middle speed, the
motor output power is lower.At this time,the motor torque is limited by the motor/generator torque[F06.08~F06.09].If the
motor runs at high speed or above the rated speed,the output power is limited by [F06.27],and the output torque
decrease inversely with the speed.
F06.28 Motor weak magnetic current upper limit
F06.29 Motor weak magnetic feed forward gain
F06.30 Motor weak magnetic gain
While under AM/PM VC control, if the motor speed is above the rated speed, or the bus voltage is lower and the
running speed is near the rated speed ,the inverter need to control the motor under the weak magnetic control, so that
the motor can track speed setting.
Function Parameter Specifications
Factory default: 0.1%
Factory default: 10.0%
Setting range: 0.0-500.0% Factory default: 100.0%
Setting range: 0.0~250.0% Factory default: 100.0%
Setting range: 0~1 Factory default: 0
Setting range: 0.0~80.0% Factory default: 50.0%
Setting range: 0.000~6.000s Factory default: 0.010s
Setting range: 0.0-250% Factory set: 150.0%
Setting range: 0.0-250.0% Factory set: 60.0%
Setting range: 0.0-200.0% Factory set: 0.0%
Setting range: 0.0-500.0% Factory set: 100.0%
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AC300 Series Vector Control Inverter Manual
[F06.28] is set to the upper limit of demagnetizing current,and be valid to PM motor.Compared to the motor rated
current, too big weak magnetic current will make the motor demagnetize irreversibly. Mostly weak magnetic current can
guarantee that the motor does not demagnetize irreversibly within motor rated current ; [F06.29 ~ F06.30] set the weak
magnetic control parameters. When there is instability phenomenon in the weak magnetic process, adjust this
parameters group for debugging.
F06.31 Reserved
F06.32 MTPA gain Setting range: 0.0-400.0%
F06.33 MTPA filter time Setting range: 0.0-100.0ms
MTPA function is optimizing the PMSM excitation strategies to achieve Max motor output / motor current; when the
permanent magnet motor D, Q-axis inductance difference is large, adjust [F06.32] can significantly change the motor
current under same load; adjust [F06.33] can improve the stability of the motor running.
F06.34 Reserved
F06.35 Low frequency pull in current Setting range: 0.0～100.0%
F06.36 High frequency pull in current Setting range: 0.0～100.0%
F06.37 Frequency of current pulled in Setting range: 0.0～100.0%
PM open-loop VC control is valid. The current is relative to motor rated current and frequency is relative to the max
output frequency.The pulled in current is mainly used to promote the load ability in low frequency.The pull- in current
frequency [F06.37] as high frequency distinguish threshold, if low frequency load is larger,the pull-in the current should
be promote properly , but too large current will affect the efficiency of the motor.The actual use should be set up
according to the load situation.

8.8 Torque Control Parameters

F07.00 Torque/Speed control Setting range: 0-1
0: Speed control. With speed as the control quantity, the inverter meets the system usage requirements with speed
output control to meet the speed requirements of the system.
1: Torque control. This option is valid under vector control. Torque output control, with the motor torque output as the
main control target, adjust the output torque to achieve control, mainly used in tension equipment and torque
requirements equipment.
Note:
 The basic parameter group F00.03-F00.07, F00.10-F00.16 is only valid in speed mode.
 In torque mode, the frequency control is detailed in F07.10-F07.13
Function Parameter Specifications
Factory default: 100.0%
Factory default: 1.0ms
Factory default: 10.0%
Factory default: 10.0%
Factory default: 10.0%
Factory default: 0
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