YASKAWA GA700 series AC frequency converter

YASKAWA GA700 series AC frequency converter

Overview

Type: YASKAWA GA700 series AC frequency converter

Core objective: To guide professional technicians to complete the safe installation, wiring, parameter configuration, trial operation, and fault handling of frequency converters

Applicable restrictions: limited to industrial motor control only, not used in special fields such as life support systems, nuclear industry, etc

Safety regulations (core focus)

1. Definition of risk level

Typical scenarios of risk level meaning

DANGER may cause death/serious injury due to live wiring and non discharge of internal capacitors during operation

Warning: May cause death/serious injury. Flammable materials near frequency converter, poor grounding

CAUTION may cause minor/moderate injury when touching high-temperature heat sinks or handling unsecured cover plates

NOTICE may cause equipment damage due to unused shielded wires and withstand voltage testing

2. Key safety requirements

Electrical safety: Power off before wiring, wait for capacitor discharge (indicator light off, DC bus voltage<50Vdc); Grounding resistance: 200V level ≤ 100 Ω, 400V level ≤ 10 Ω

Mechanical safety: Models weighing ≥ 15kg require 2 people and lifting equipment for handling, and it is prohibited to grip the front cover/terminal cover

Operation safety: Remove the motor load before Auto Tuning; 3-wire control needs to set b1-17=0 (ignore RUN command when powered on)

Installation specifications

1. Mechanical installation

Installation direction: Priority should be given to vertical installation (to ensure heat dissipation), special models can be installed on the side (please consult the manufacturer)

Distance requirement:

Single machine: Up and down ≥ 120mm, left and right ≥ 30mm, front ≥ 50mm

Side by side installation (specific model): Drive spacing ≥ 2mm, L8-35=1 needs to be set

Environmental restrictions:

Temperature: Open type (IP20) -10~50 ℃, Closed type (UL Type 1) -10~40 ℃

Altitude: ≤ 1000m (over 1000m, capacity reduction of 1% per 100m)

Pollution level: ≤ Level 2 (no dust, oil stains, corrosive gases)

2. Electrical installation

Key terminal requirements for circuit type wiring

Main circuit power line cross-section ≥ 0.75mm ² (control circuit), tightening torque 3.6-41.5N · m R/L1/S/L2/T/L3 (input), U/T1/V/T2/W/T3 (output)

Control circuit shielded twisted pair cable, up to 3m in length, with a distance of ≥ 30cm from the power line S1-S8 (multifunctional input), A1-A3 (analog input), FM/AM (analog output)

The grounding terminal on the motor side must be grounded, and the shielding layer must be grounded at one end FG (driver grounding) and the motor casing must be grounded

Startup and parameter configuration

1. Keyboard operation

Core components: RUN/STOP button (local start stop), LO/RE button (local/remote switch), RESET button (fault reset)

Mode description:

LOCAL mode: keyboard controls speed and start stop

REMOTE mode: External terminal or communication control (parameter b1-01/b1-02 setting)

Display screen: Supports multiple languages (including Chinese), displaying frequency, current, and fault codes

2. Initialization process

After powering on, enter the Initial Setup interface and set the date/time (requires installation of CR2016 battery)

Run the Setup Wizard and enter the motor nameplate parameters (rated power, voltage, current, frequency)

Execute Auto Tuning:

Rotation tuning (T1-01=0): Need to be unloaded, motor speed should be above 50% of rated frequency

Static tuning (T1-01=1): Automatically calculates motor parameters without disconnecting from the load

No load test run: Confirm the motor direction and no abnormal vibration/noise

Load and run: Verify acceleration/deceleration time (C1-01/C1-02), overload capacity

3. Core parameter configuration

Parameter code, parameter name, function description, typical settings

A1-02 Control mode selection switch V/f/OLV/EZOLV 0 (V/f, general scenario)

C1-01 Acceleration Time 1 Time from 0 to maximum frequency of 10.0s (default, adjustable according to load)

C6-01 duty mode selects constant torque/variable torque switching 0 (Heavy Duty, constant torque)

E2-01 motor rated current matching motor nameplate current entered according to actual motor parameters

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

4. Comparison of control methods

Control mode parameter setting applicable scenarios core advantages

V/f control A1-02=0 fan, pump, multi motor linkage has strong universality and does not require motor parameters

Open loop vector (OLV) A1-02=2 high-precision speed control without speed feedback, high low-speed torque

EZ vector A1-02=8 simplified settings for ordinary variable speed scenarios, no need for fine tuning

Troubleshooting

1. Common faults and solutions

Fault code, fault name, common causes, and solutions

Check the wiring for overcurrent output short circuit, heavy load, and short acceleration time at oC, reduce load, and increase C1-01

OV overvoltage deceleration time is too short, brake resistor damage increases deceleration time, replace brake resistor, activate L3-04 (stall prevention)

Overloading of oL1 motor, overload of motor, low speed to reduce load, use of forced cooling motor, correction of E2-01 parameters

Overload of oL2 drive, insufficient drive capacity, low-speed high torque replacement with large capacity models, reducing load

GF grounding fault output side grounding short circuit, motor insulation damage inspection wiring, testing motor insulation resistance (≥ 10M Ω)

STo safety torque OFF safety input terminal disconnection inspection H1/H2/HC wiring, reset safety controller

2. Fault reset process

Remove the source of the fault (such as power-off inspection of wiring, reducing load)

Waiting for the discharge of the driver capacitor (indicator light off)

Press the RESET key on the keyboard, or power off and restart

If it repeatedly occurs, check the parameter configuration or contact the manufacturer for repair

Compliance and scrapping

Compliance standards: Complies with IEC/EN 61800-5-1, UL 508C, CSA C22.2 No.100

Scrap requirements:

Separate the battery (CR2016) and microSD card and dispose of them separately according to regulations

SD cards need to be physically destroyed or data erased to prevent information leakage

Drive body is classified and recycled according to industrial waste