Santerno SINUS MINI Series - Page 49

SINUS MINI High performance Vector Control Inverter User Manual
48
Failure
No
Failure
code
Failure
description
Potential causes
Solutions
Inverter module failure
Seek for technical support
Temperature detection circuit failure
Seek for technical support
18
oL1
Inverter overload
protection
Input power under voltage
Check input power supply
Fast start-up when motor operates
with high speed
Start again after the motor stop
rotating
Keep overloading for a long period of
time
Shorten the overloading time and
reduce load
Acceleration and deceleration time is
too short
Prolong the
acceleration/deceleration time
V/F curve ratio is set too large
Adjust V/F curve setting and
torque boost
Power level of inverter is small
Replace to inverter with proper
model
19
oL2
Motor overload
protection
Input power under voltage
Check input power supply
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