YASKAWA GA700 series AC frequency converter

Trial operation verification:

No load operation: Confirm that the motor direction is correct, there is no abnormal vibration or noise, and the monitoring current/voltage is normal

Loading and running: gradually increase the load, verify overload capacity, acceleration/deceleration smoothness, fine tune PID and other application parameters

（3） Core parameter configuration

1. Control mode parameters (A1-02)

Control mode parameter setting applicable scenarios core advantages

V/f control 0 fan, pump, and multi motor linkage; Strong universality, high stability, and simple setup without motor parameters

Open loop vector (OLV) 2 high-precision speed control, low-speed high torque scenarios (such as conveyors) without speed feedback, speed range 1:100

EZ Vector (EZOLV) 8 ordinary variable speed scenarios, without the need for fine tuning to simplify operations, balancing performance and usability

2. High frequency core parameters

Parameter code, parameter name, function description, typical settings

C1-01/C1-02 Acceleration Time 1/Deceleration Time 1 Time from 0 to maximum frequency (E1-04) 10.0s (default, the heavier the load, the longer the time)

C6-01 duty mode selection switches between constant torque/variable torque mode 0 (HD, constant torque); 1 (ND, variable torque)

E1-04 maximum output frequency V/f curve maximum frequency 50Hz/60Hz (matching grid frequency)

E2-01 motor rated current matching motor nameplate current entered according to actual motor parameters (such as 10A)

L1-01 motor overload protection electronic thermal protection mode 2 (constant torque 10:1 speed range); 1 (Variable torque)

Select Ramp stop/Free stop/DC brake 0 (Ramp stop, default) as the stopping mode for b1-03; 1 (Free Stop)

3. Comparison of Duty Modes

Duty mode is suitable for load overload capacity and typical applications of carrier frequency

Heavy Duty (HD) Constant Torque Load 150% Rated Current/60s 2kHz (Default) Extruder, Conveyor, Machine Tool

Normal Duty (ND) variable torque load 110% rated current/60s 2kHz Swing PWM fan, pump blower