LiteOn EVO 8000 Series - Chapter 6 | Troubleshooting; Alarm and Fault Displays

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Chapter 6│Troubleshooting
6.1 Alarm and Fault Displays
Table 6.1 Alarm and Fault Displays, Causes, and Possible Solutions
Keypad
Display
Fault Name
Cause
Possible Solution
EF0
Retain
EF1 to
EF8
External Fault
( Input Terminal S1 to
S8 )
1. An external device
tripped an alarm
2. Incorrect wiring
3. Multi-function input
wiring is not correct
1. Remove the cause of the external
fault then reset the multi-function
input.
2. Confirm if the signal lines is
properly connected to the
terminals assigned for external fault
detection (E1-口口= 23 to 38)
3. Confirm if E1-口口=23 to 38 is
set to the unused terminals.
dEv
Speed Deviation (for
Closed-Loop Control
Methods)
The deviation between
the pulse input speed
feedback and speed
command is greater than
then level set to F1-12 for
longer than the time set
to F1-13.
1. Over loaded
2. The load is locked up
3. Motor is being braked
1. Increase the deceleration and
acceleration times (C1-00 to C1-07)
2. Check if F1-12 and F1-13 are set
correctly.
3. Check the motor brake and make
sure it is released
FbH
PID Feedback High
PID feedback input is
greater than the
detection level set to
b5-22 for longer than the
detection time set to
b5-23
1. b5-22 andb5-23
inappropriate setting
2. PID feedback wiring
incorrect
3. Feedback sensor
malfunction
4. Feedback input circuit
malfunction
1. Confirm b5-22 and b5-23 settings
2. Correct the wiring
3. Replace the sensor if it is
damaged
4. Replace the PCB or drive.
Contact the local distributor.
FbL
PID Feedback Low
When the PID
feedback detection is
enabled in b5-11, a
1. Inappropriate setting in
b5-12 and b5-13
2. Incorrect PID feedback
wiring
3. Feedback sensor
1. Correct b5-12 and b5-13 settings
2. Correct the wiring
3. Replace the sensor if it is
damaged
4. Contact the local distributor to