CHINT NVF5 Series Quick Start-Up Wizard page 7

5.2 Simple Commissioning Process
Confirm the main
circuit and control
circuit correct
Power on
Select motor
control mode by
parameter F0.00
Input the correct motor
nameplate data
Need motor
auto tuning
When the inverter is ready, press Run key to start
the motor without load, measure and check the 3-
If the inverter is running normally without load, the
inverter can be tested with load, measure and
confirm the 3-phase current balance, and also
confirm the current less than rated motor current
After testing completed, stop the inverter, prepare
to set other parameters as equipment required
Record the current value and parameters
After testing completed, stop the inverter
and set other parameters as required
6. Fault description and Trouble shooting
If a fault appears， Please see for an explanation of the fault code and check by yourself firstly
before asking for help from Chint or Chint channels.When you need support,please contact
Chint or Chint channels.
Code Fault Type
Inverter
Accel.
E.OC1
running
overcurrent
Inverter
Decel.
E.OC2
running
overcurrent
Inverter
constant
E.OC3
speed running
overcurrent
Yes
No
Run the motor at 5.00Hz and
check the motor running direction
Set reference frequency by
parameter F0.05
Set Accel. and Decel. time
phase current balance
Low grid voltage
Directly and quickly start rotating motor
Incorrect Motor Nameplate
Too small inverter power
Unsuitable V / F curve
Potential Energy Load or Big Inertial Load
Accel./Decel. Time too short
Load Fast Change
Refer to Chapter 3 -"Installation
and Wiring" for check correct
wiring
After power on, the default 5.00Hz
will be displayed on NVF5 integral
keypad screen normally
Set NVF5 motor control mode according
to parameter F0.00 definition. The default
mode is V/F control.
Input the correct motor nameplate
data in parameter group F2
(F2.01~F2.06)
Can disconnect
motor load?
No
Set parameter F2.22
to 1, press RUN key
to conduct static
motor auto tuning
Figure 5-1
Fault reason
Yes
Set parameter F2.22
to 2, press RUN key
to conduct rotate
motor auto tuning
If the motor runs reverse,
change parameter F0.06 or
change the 3-phase motor
cables.
Default reference frequency is
5.00Hz. It can be changed as
required.
Set Accel.time and
Decel.time by parameter
F0.14 and F0.15
The output current value of
inverter is almost the same as
the value displayed on
integral keypad of NVF5，
motor running direction refer
to parameter F0.06
Action
Check the input power supply
Increase accel. time
Motor auto tuning
Enlarge inverter power rate
Adjust V/F cruve or adjust manual
torque boost
Add Regen. Brake Components
Check load