TECO JNEV-401~403-H3 - Figure 5-4 Drive Running Troubleshooting Diagnostics

Chapter 5 Trouble shooting and maintenance
5-11
Is MCCB
close
d
?
Can MCCB be
closed?
‘LED indicator
lit?
Check for short-circuited wiring
˙Bad power quality
˙or wiring incorrect
EV fault
Set switch to “RUN” position
EV fault
EV fault
YES (normal value within 3%)
YES (motor does not rotate), the phase-to phase voltage is within
3% for all motor leads.
˙Motor over load
˙Motor faults
˙wiring incorrect
YES
YES
N
O
N
O
Is the operation
switch in RUN
p
osition?
N
O
N
O
N
O
N
O
N
O
The motor doesn’t run
Is the voltage between
Leads correct?
Is there
output? (Motor leads)
Are
V
oltage
outputs even?
Figure 5-4 Drive Running Troubleshooting diagnostics