TECO JNEV-401~403-H3 - Page 79

Chapter 5 Trouble shooting and maintenance
5-8
* from previous page
Check parameters of the inverte
r
N
O
Perform parameter initializations
Specify operation control metho
d
Set up frequency commands
Is the frequency
value displayed in
the operating unit
Is there any
drive faults
?
Are there voltage
outputs in output
terminals T1,T2
and T3.
Connect the motor to run
A
re ou
t
pu
t
currents of
each phase
even?
The inverter is OK
Replace the control board
Replace the control
board
Is the control
board working
after
re
p
lacement?
Perform detailed fault & function checks
•
N
O
N
O
N
O
YES
YES
YES
YES
YES
N
O
Fi
g
ure 5-1 General troubleshootin
g
flowchart
,
CONTD