User Manual Of EL7-EC** AC Servo
284
Error
code
Main Sub Display: “
Er 73c”
73
C
Error description: Excessive Distributed Clock error
Cause
Diagnosis
Solution
Poor master device
performance
--
Increase threshold value limit
Single-unit drive has
problem
Is it a single unit or
multiple units together in
the network
Replace driver
interfere
Check the grounding and
network wiring quality
Replace network cable
Error
code
Main Sub
Display: “
Er 801”
80
1
Error description: Unknown communication error
Cause
EtherCAT state machine transition failed
The status of the
error can be detected
All ESM status
The result status
The current state is maintained below the safe operation, and the
operation state is switched to the safe operation state
Solution
Verify network connection and master device EtherCAT state machine
transition order
Error
code
Main Sub
Display: “
Er 802”
80
2
Error description: Memory overflow
Cause
CPU failed to request memory
The status of the
error can be detected
All ESM status
The result status
The current state is maintained below the safe operation, and the
operation state is switched to the safe operation state
Solution
Verify if EL7EC hardware is faulty
Error
code
Main Sub
Display: “
Er 803”
80
3
Error description: RAM out of bound
Cause
EtherCAT state machine memory address access request from master
device is out of bound
The status of the
error can be detected
All communication status
The result status
NO
Solution
Verify master device configuration or replace master device
