Basic Parameters; Output Side Noise Filter; Braking Reactor Or Braking Unit; Chapter 8 Function Parameter Specifications - Veichi AC300 Series Technical Manual

AC300 Series Vector Control Inverter Manual
and the inverter should be as short as possible.


Output side noise filter

The frequency inverter outputs square wave with high-speed peak value voltage switch. So there is high-speed dv/dt
conver on the output cables that will produce a large number of radio disturbance and inductive signal. By installation
noise filter at the output side, the impact can be relieved. Please do not install the into phase capacitance and the noise
filter to the output circuit. Otherwise, there is danger of damage to the frequency inverter.
phase reactor

0-phase reactor is used for reducing the electromagnetic interference of the frequency inverter, which is suitable for
the input side and output side. It equals to a three-phase common mode inductance. In actual use, according to the
actual magnetic core size and cable specification, it is better to make sure 3-5 circles winding ratio to bring the best
performance.


Braking reactor or braking unit

Renewable electricity consumption unit, please see the sixth part of the chapter three "electric installation".
 Heat relay
Please install the heat relay at the output side of the frequency inverter. When the motor enters into overload state, it
will cut the power source to protect the motor. While using one frequency inverter to drive one motor, it is unnecessary
to install heat relay. The motor overload protection current [F10.16] of the frequency will work. While using one
frequency inverter to drive multiple motors or the motor is drove directly by the power grid, please install heat relay
between the inverter and the motor. While installing the heat relay, please design to cut the sequence control circuit of
the MC at the main loop iuput side by the connection spot of the relay or design to input the heat relay action into the
frequency inverter as the exterior malfunction. And please pay attention to the following tips to avoid heat relay
malfunction and motor overheating at low speed.
Run at low speed
One frequency inverter run multiple motors
Motor cable is very long
Detect malfunction mistakenly for carrier frequency is too higher.
 Low speed and heat relay
In normal case, the heat relay is suitable for the universal motor. While using the frequency inverter to run the
universal motor (standard motor), the motor current is 5-10% higher, comparing with the commercial power supply.
Besides, at low speed, even in the motor rated current range, the cooling capability of the fan drove by the motor axis
will reduce, which will bring motor overheat. So please set the motor overheat protection current [F10.16] in the
frequency inverter to be valid.
Motor cable is longer

While the motor cable is longer and the carrier frequency is higher, impacted by the leakage current, the heat relay
maybe malfunction. To avoid it, please reduce the carrier frequency or set higher detection value of the heat relay.
Before enhance the detection value, do confirm whether there is other cause for the motor overheat. Otherwise, there is
danger.
Peripheral Equipments and Options
52
AC300 Series Vector Control Inverter Manual

Chapter 8 Function Parameter Specifications

8.1 Basic Parameters

F00.00 Motor control mode Setting range: 0～8
Asynchronous motor control mode:（AM）:
0: V/F control
When the frequency (F) is adjustable, the ratio of the control frequency to the voltage (V) is kept constant.
The control mode is used for speed control without requiring fast response and high precision.
3: High-performance VC without PG
There is without speed sensor vector control, which is used for speed control that requires high precision.
Under this mode control, the torque can respond fastly even without using the speed feedback signal of the motor, and
a large torque can be obtained when the low speed motor is running. For better control, please make motor parameter
auto-tuning.
4: High-performance VC with PG
There is vector control with speed sensor, which is used for speed control of fast torque response and high
performance torque control.
Mainly used for high-precision speed control, torque control, simple servo control and other places where strict control
performance is required. For better control, please make motor parameter auto-tuning. In order to receive the speed
feedback signal of the motor, you need to use the PG option card.
In order to receive the speed feedback signal of the motor, you need to use the PG optional card.
Synchronous motor control mode（PM）:
6: High-performance VC without PG
The permanent magnet synchronous motor has no PG feedback vector control. Through the software algorithm, the
complete model and observer of the permanent magnet synchronous motor are built in, and the magnetic pole position
and speed of the motor are observed in real time.
The mode requires complete no-load identification of the motor, which is suitable for occasions where the
acceleration/deceleration time is high and the load is an impact load.
7: High-performance VC with PG
The permanent magnet synchronous motor has speed sensor control, featuring dynamic response and high control
performance. It can perform torque control and weak magnetic high-speed operation, and can be used for high-power
servo control.
1, 2, 5: Reserved
Function Parameter Specifications
Default: 0
53