YASKAWA GA500 series AC micro frequency converter

Wiring requirements:

Wire type: Shielded twisted pair cables are required for control circuits to avoid electromagnetic interference;

Length limit: Control circuit wiring ≤ 50m, Safe Disable input wiring ≤ 30m;

Isolation requirements: The distance between the control circuit and the main circuit should be ≥ 30cm, avoiding parallel wiring, and the shielding layer should be grounded at one end (driver side).

(3) Special wiring precautions

Braking resistor: can only be connected to terminals B1 and B2, and+1 or - terminals are prohibited. ERF type braking resistors need to be set with parameter L8-01=1;

EMC filter: The built-in filter model (suffix E) needs to be grounded to the neutral line, otherwise it may cause leakage exceeding the standard;

Lightning protection and surge: MCCB (molded case circuit breaker) or RCM/RCD (residual current monitor) should be installed at the input end to avoid short circuit and surge damage.

Startup and Debugging Process

1. Operation preparation

(1) Parameter settings

General Setting Mode (SrUP): Contains 26 core parameters, including control mode (A1-02), acceleration and deceleration time (C1-01/C1-02), motor rated parameters (E2-01~E2-04), load type (C6-01), etc., suitable for quick configuration;

Application Preset (A1-06): To automatically optimize parameters for specific scenarios such as fans, pumps, and cranes, it is necessary to first initialize the parameters through A1-03 (2-wire/3-wire system);

Parameter backup and recovery: Parameters can be backed up locally through the keyboard, and can be quickly written when changing drives to avoid duplicate configurations.

(2) Keyboard operation

Mode switching: LOCAL (keyboard control)/REMOTE (external control) can be switched through the LO/RE keys. Before switching, ensure that there are no running commands to avoid sudden startup;

Core button functions:

RUN/STOP: Start/Stop, STOP key has the highest priority (can be disabled through o2-02);

Arrow keys: adjust parameter values or switch menus;

ESC/ENTER: Return to the previous menu/confirm parameter settings;

RESET: Reset the fault (the cause of the fault needs to be eliminated first).

2. Auto Tuning

(1) Tuning type and applicable scenarios

Core Requirements for Parameter Setting of Motor Type Tuning Method

Induction motor rotation tuning T1-01=0, motor disconnected from load, load rate ≤ 30%, motor nameplate parameters need to be input

Induction motor static tuning T1-01=1. The motor cannot rotate. During the tuning period, the motor does not rotate without power and only detects electrical parameters

Induction motor inter line resistance tuning T1-01=2 wiring distance exceeds 50m, compensating for the influence of line resistance

PM motor rotation tuning T2-01=4 motor disengages load, automatically detects stator resistance, d/q-axis inductance and other parameters

PM motor static tuning T2-01=1 motor fixed, suitable for scenarios where the load cannot be disconnected

PM motor high-frequency injection tuning T2-01=5 is only applicable to IPM motors, and the motor nameplate parameters need to be input first

Control circuit deceleration rate tuning T3-00=2 automatically optimizes deceleration time to prevent overvoltage faults

Control circuit KEB tuning T3-00=3 optimizes dynamic braking parameters and adapts to KEB Ride Thru function

(2) Tuning operation steps

Input the motor nameplate parameters (rated power, voltage, current, number of poles, fundamental frequency);

Confirm that the motor is disconnected from the load (rotation tuning) or firmly fixed (static tuning);

Enter Auto Tuning mode (AfUn) through the keyboard and select the corresponding tuning type;

Start tuning, during the rotation tuning period, the motor will rotate (at a speed of about 50% of the rated speed), and personnel are prohibited from approaching;

After tuning is completed, the system automatically updates the motor parameters, and the modification results can be viewed through the Verify menu.

3. Test Run

(1) No load test

Operation process: Set the frequency to 6Hz → Start the driver → Gradually increase the rated frequency (10Hz each time) → Observe the motor status;

Inspection items: Motor direction (if incorrect, replace U/T1 and V/T2 wiring), vibration (no abnormal shaking), output current (≤ 30% of rated current), no abnormal noise.

(2) Load testing

Operation process: Connect the load → Set the actual operating frequency → Start the driver → Run continuously for more than 30 minutes;

Inspection items: acceleration/deceleration response (no lag), torque output (meeting load requirements), driver temperature (≤ 85 ℃), parameter stability (no drift);

Fine tuning optimization: If vibration occurs, adjust n1-02 (anti oscillation gain), if torque is insufficient, adjust C4-01 (torque compensation gain), and if overvoltage occurs, extend deceleration time (C1-02).

(3) Test Run Checklist

Power supply voltage: The input voltage is within the allowable range on the driver nameplate;

Wiring correctness: The phase sequence of the main circuit and the polarity of the control circuit signal are correct;

Protection function: Simulate overload and overcurrent scenarios, the driver needs to trigger protection and alarm normally;