HNC Electric HV350 Series, User Manual

Page: 104 / 125

HV350 Mini Frequency Inverter User Manual
103
Failur
e No
Failure
code
Failure description Potential causes Solutions
protection
Motor rotation is blocked or load
mutation occurs
Prevent the motor rotation from
blocking and reduce the load
mutation
Common motor maintains running
under heavy load for a long period of
time
Replace the common motor with
variable frequency motor or
improve the running frequency
Motor overload protection time is set
too small
Increase the motor overload
protection time
V/F curve ratio is set too large
Adjust V/F curve setting and
torque increment
DC braking current is set too high Reduce the DC brake current
20 LP Input power failure
There is abnormal connection,
missing connection or disconnection
at the power terminal of the inverter
Check the power connections as
per the operational regulations
and eliminate the errors of
missing connection and
disconnection
21 SP
Abnormal output
phase loss
There is abnormal connection,
missing connection or disconnection
at the output side of the inverter
Check the power connections at
the output side of the inverter as
per the operational regulations
and eliminate the errors of
missing connection and
disconnection
22 ER01
EEPROM failure EEPROM reading and writing failure Seek for technical support
23 ER02
CPU failure CPU failure
Seek for technical support
24 ER03
Keypad
communication
fault
Keypad or its control line
failure;
Check the connection of
Keypad
and its control line.
CPU failure
Seek for technical support
25 ER04
Parameter setting
failure
In traverse or three-wire
operation mode, wrong
parameter setting
Modify parameter setting
26 ER05
Communication
abnormal 2
(Terminal 485)
The communication of terminal 485
is disconnected Check the connection of the
equipment communications
The baud rate is set improperly Set compatible baud rate
The communication of terminal 485
is faulty
Check whether the data receiving
and transmission complies with
the protocol, whether the check
sum is correct and whether the
receiving and transmission
interval complies with the
requirements
The communication of terminal 485
is time-out
Check whether the
communication timeout is set
properly and confirm the
communication cycle of the
application program
The failure alarm parameter is set
improperly
Adjust the failure alarm parameter