LiteOn EVO 6800 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
EF
External Fault
( Input Terminal S1 to S7 )
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.
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 FbL will be triggered
while the PID feedback falls
below the level set to b5-
12 for longer than the time
set to b5-13.
1. Inappropriate setting in b5-
12 and b5-13
2. Incorrect PID feedback
wiring
3. Feedback sensor
malfunction
4. Incorrect feedback input
circuit
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
replace the board or the drive.
oH
Heatsink Overheat
Heatsink temperature over
90 to 100°C
(Overheat level is
determined by rating of the
1. Ambient temperature is too
high
2. Internal cooling fan stopped
operating
3. Bad air flow due to
insufficient room.
1.Check the temperature surrounding
the drive
a. Improve the air flow inside the
enclosure panel
b. Install an air conditioner or fan to
cool the environment