YASKAWA VARISPEED-626M/656MR5 series vector control frequency converter

Directional control:

Encoder directional control:

Resolution: 360 °/4096=0.088 °, repeatability accuracy ± 0.2 °.

Applicable scenario: The load shaft is connected 1:1 to the motor shaft and requires a load shaft encoder (such as NE-1024-2MDF-068).

Magnetic sensor directional control:

Repetition accuracy ± 0.2 °, using magnet (MG-1378BS) and magnetic sensor (FS-1378C), detection range ± 15mm.

Troubleshooting and Maintenance

Common faults and solutions:

Fault code, fault type, cause, and handling measures

AL-01 inverter overcurrent output short circuit, ground fault check wiring, confirm no short circuit

AL-11 main circuit overvoltage input voltage is too high, load inertia is large. Check the power supply and adjust the acceleration time from C1 to 10

AL-20 winding switching fault switching was not completed within the specified time. Check the contactor wiring and confirm the C1-25 motor code

Maintenance cycle:

Daily inspection: motor abnormal noise, vibration, ambient temperature, display screen values.

Regular inspection:

Remarks on component replacement cycle

Cooling fan has accumulated 20000 hours of operation over 2-3 years

Filter capacitor for 5 years at an ambient temperature of 30 ℃

Motor bearings disassembled and inspected for wear after 12000 hours/2 years