Emotron VSA 23 Manual Del Usuario página 62

Table 25
Display
Communication
time-out detec-
COT
tion
3. Errors which can only be recovered manually (no auto-
restart)
Table 26
Display
Over-current during
OC
stop
OL1
Motor overload
OL2
VSD overload
Under voltage dur-
LVC
ing operation
Emotron AB 01-3991-11r2
Error
1. [266] communication time-
out detection time is too short.
2. VSD communication is defect.
3. VSD does not receive the cor-
rect Modbus data within the set
detection time.
Error
1. OC Detection circuit malfunction
2. Bad connection for CT signal
cable
1. Heavy load
2. Improper settings of [223]
Excessively Heavy load
1. Power voltage too low
2. Power voltage varies widely
Cause
Cause
Troubleshooting and maintenance
Corrective Action
1. Increase [266] communica-
tion time-out detection time.
2. Repair VSD communication.
3. Check the Modbus data
communication from the Mas-
ter.
Corrective Action
Send the VSD back for
repair
1. Increase motor capacity
2. Set [223] correctly
according to motor name-
plate.
Increase VSD capacity
1. Improve power quality.
2. Set a longer accelera-
tion time
3. Add a reactor at the
power input side
4. Contact technical sup-
port
61