Inovance SV820N Series - 5.5 Troubleshooting of Communication Faults

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5 Troubleshooting
5
■ E3.980: Encoder internal fault
Cause:
An encoder algorithm error occurs.
Probable Cause ConrmingMethod Corrective Action
An encoder internal
fault occurs.
If the servo drive is powered off and on several times
but the warning is still reported, it indicates that the
encoder is faulty.
Replace the servo motor.
■ E3.990: Power input phase loss warning
Cause:
Thethree-phaseservodriveof1kWisallowedtorunundersingle-phasepowerbutthefaultandwarningof
power input phase loss (H0A-00) is enabled.
Probable Cause ConrmingMethod Corrective Action
When H0A-00=1 (enable faults
andwarnings),the0.75kW
three-phase servo drive (H01-
02=5) can run under single-
phase power, but this warning
is reported when single-phase
power is applied.
Checkwhetherthethree-phase
servo drive allows running under
single-phase power.
If the warning persists when a three-phase
servo drive is connected to three-phase
power, rectify this warning as Er.420 (power
cable phase loss).
If the warning persists when a three-phase
servo drive allows single-phase power input,
set H0A-00 to 0.
■ E3.998: Homing object dictionary is set incorrectly.
Cause:
Homingmode(6098h)setsavalueoutsidethespecication.
Probable Cause ConrmingMethod Corrective Action
The setting value of object
6098h is not supported.
Checkthesettingvalueofobject6098h.
Set parameters according to the
specications.
■ E3.E20: Ethernet hardware error
Cause:
Ethernet hardware fault
Probable Cause ConrmingMethod Corrective Action
Ethernet hardware error
If the servo drive is powered off and on several times but the
warning is still reported, it indicates that the Ethernet is faulty.
Replace the servo drive.
■ E3.E21: The MAC address is not burned.
Cause:
MAC address of the driver not burnt.
Probable Cause ConrmingMethod Corrective Action
The MAC address
is not burned.
If the servo drive is powered off and on several times but the fault
persists, it indicates that the servo drive does not burn the MAC
address.
Please consult the
manufacturer’s technical
service personnel.