Goodrive350 IP55 High-ingress Protection Series VFD
Basic Operation Instructions
-48-
Function
code
Name
Description
Default
value
P07.01
Reserved
/
/
P07.02
QUICK/JOG key function
Range: 0x00
–0x27
Ones: QUICK/JOG key function selection
0: No function
1: Jogging
2: Reserved
3: Switching between forward/reverse rotation
4: Clear UP/DOWN setting
5: Coast to stop
6: Switch running command reference mode
by sequence
7: Reserved
Tens: Reserved
0x01
5.5.3 Vector control
Asynchronous motors are featured with high order, non-linear, strong coupling and
multi-variables, which makes it very difficult to control asynchronous motors during actual
application. The vector control theory aims to solve this problem through measuring and
controlling the stator current vector of asynchronous motor, and decomposing the stator
current vector into exciting current (current component which generates internal magnet field)
and torque current (current component which generates torque) based on field orientation
principle, and then controlling the amplitude value and phase position of these two
components (namely, control the stator current vector of motor) to realize decoupling control of
exciting current and torque current, thus achieving high-performance speed regulation of
asynchronous motor.
The GD350 IP55 series VFD carries built-in speed sensor-less vector control algorithm, which
can be used to drive the asynchronous motor and permanent-magnet synchronous motor
simultaneously. As the core algorithm of vector control is based on accurate motor parameter
model, the accuracy of motor parameters will impact the control performance of vector control.
It is recommended to input accurate motor parameters and carry out motor parameter
autotuning before vector operation.
As vector control algorithm is complicated, users should be cautious of regulation on dedicated
function parameters of vector control.
