Inovance SV820N Series User Manual

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5 Troubleshooting
5
5.5 Troubleshooting of Communication Faults
The above provides the details for rectifying faults of the SV820 series servo drive. This part describes how
to rectify communication faults.
■ E3.E07: Network state switching abnormal
Cause:
Whentheservoisenabled,thenetworkswitchesfromOPtonon-OP.
Probable Cause ConrmingMethod Corrective Action
1. When the servo is enabled, the
networkswitchesfromOPto
non-OP.
Checkwhetherthenetworkstatehas
switched from OP to non-Op.
Checkthehostcomputernetwork
status switch program.
■ E3.E08: Synchronization loss
Cause:
The master station’s synchronization signal is abnormal during communication.
Probable Cause ConrmingMethod Corrective Action
1. The slave station’s
receipt signal is
abnormal during
synchronous
communication.
Checkwhethertheshielded
twisted pair is used as the
communication cable.
Checkwhethertheservodrive
is well grounded.
Checkwhetherdrive’sEthernet
port is damaged.
Use the shielded twisted pair.
Connect the cable according to the wiring instructions.
CheckthenetworkconnectionstatusviatherstLEDon
the left.
2. The master
station’s
sending signal is
abnormal during
synchronous
communication.
Thesynchronizationclockofthe
host controller is not valid.
Thesynchronizationclockerror
of the host controller is too
large.
Measurethesynchronizationcyclebybackground
oscilloscopeoractualoscilloscope:
If the synchronization cycle is 0, it indicates that the
synchronizationclockofthehostcontrollerisnotvalid.
Firstly,checkwhetherthenetworkcableconnectsall
slave stations in accordance with entering from the IN port
andgoingoutfromtheOUTport;thenrestartthenetwork.
Butifthenetworkcableconnectionsequenceiscorrect,
restartthenetworkdirectly.
Ifitisnot0andwithinthepermissibleuctuationrange
(2us) of the servo drive, increase the permissible
interruption loss times (200E-21h) of the slave station.
■ E3.E11:ESIcongurationleisnotburned.
Cause:
ESIcongurationleisnotburned.
Probable Cause ConrmingMethod Corrective Action
1. Theequipmentconguration
leisnotburnt.
When the host computer scans the slave
station, its ID is empty.
Burntheequipmentconguration
le.
2. The servo drive is faulty. Servo drive failure Replace the servo drive.

Inovance SV820N Series Specifications

General

Brand	Inovance
Model	SV820N Series
Category	Servo Drives
Language	English