User Manual of EM730/EM730E Series Inverter
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Normal running status: Upon receiving a valid start command (from the keyboard,
control terminal and communication), the inverter will have the output based on the set
input requirements, driving the motor to rotate.
Jog running status: This is enabled by the keyboard, external terminal or communication,
driving the motor to rotate at the jog input speed.
Self-learning running status: This is enabled by the keyboard, detecting relevant
parameters of the motor in the stationary or rotating status.
Stop status: It is a process for the output frequency to decrease to zero according to the
set deceleration time in the case of invalid operating commands.
Jog stop status: It is a process for the output frequency to decrease to zero according to
the jog deceleration time in the case of invalid jog operating commands.
Protection status: Refer to the inverter status in the case of any protection.
1.2.2
Running mode of inverter
The running mode of the inverter refers to the control law of the inverter to drive the motor
to rotate at the required speed and torque. The running mode includes:
General open-loop space vector control-VVF control: suitable for applications where the
speed is not changing fast and there are not high requirements for the accuracy of
rotating speed, and most AC motor drives.
Speed sensorless vector control-SVC control: advanced speed estimation algorithm,
involving open-loop vector control and high control accuracy but no encoder.
1.2.3
Set mode of inverter
The set mode of the inverter refers to the physical quantity that is taken as the controlled
target when the inverter drives a motor.
Speed setting mode with the motor speed as controlled target
Digital setting, analog input setting, high-speed pulse input setting, communication setting,
digital potentiometer setting, process PID setting, simple PLC setting or multi-segment speed
setting can be performed separately or in a mixed manner. Fig. 1-1to Fig. 1-4 detail various
input modes of the EM730/EM730E series inverter by speed setting.
