12
1BW0-A1-C-LD-426
7. Troubleshooting
For any abnormal conditions arising from general, routine and
periodic checks, please refer to
Table 2 Checklist for troubleshooting.
Table 2 Motor Troubleshooting Checklist
Symptoms
Possible causes
S
h
af
t
d
am
ag
ed
N
o
is
e/
ex
ce
ss
iv
e
v
ib
ra
ti
o
n
Overheating
Ir
re
g
u
la
r
ro
ta
ti
o
n
P
ro
te
ct
o
r
tr
ig
g
er
ed
E
le
ct
ri
c
le
ak
ag
e
F
au
lt
y
i
n
su
la
ti
o
n
r
es
is
ta
n
ce
Handling methods
B
o
d
y
B
ea
ri
n
g
In
st
al
la
ti
o
n
P
la
ce
Ambient temperature too high
○
○
○
Improve ventilation
system
Humidity too high
○
○
Consult manufacturer
Grease or water internally accumulated
○
○
○
Remove
Insufficient space around motor
○
○
○
Remove unnecessary
articles
External vibration, excessive impact
○
○
○
Antivibration treatment
Unstable installation platform
○
Reinforce platform
strength
L
o
ad
c
o
u
p
li
n
g
D
ir
ec
t
co
u
p
li
n
g
Improper center alignment
○
○
○
Redo center alignment
Coupling's amount of unbalance too
big
○
Calibrate the coupling
P
u
ll
ey
Pulley center misaligned
○
○
Redo center alignment
Contact angle too small
○
○
Select suitable outside
diameter of pulley
Tension too strong
○
○
Adjust belt tension
Load point distant from motor too far
○
○
Move load point to be
nearby motor side
Oversize pulley hinders ventilation for
heat dissipation
○
○
Build air duct for heat
dissipation of pulley
O
th
er
s
Dirt stained to rotating part
○
○
Cleaning exterior
Axial load too big
○
Review the axial force
W
ir
in
g
Excessive voltage drop
○
○
○
Wiring length is too
long, adjust the length
Terminal loosened
○
○
○
Refasten terminals
Incomplete grounding connection
○
○
Redo grounding
connection
Single-phase operation
○
○
○
Check connecting
circuits
Voltage imbalance
○
○
○
Check control side
Incorrect wiring of cooling fan
○
○
Recheck loops
Summary of Contents for MAX-PM
Page 1: ......
Page 3: ......
Page 4: ......
Page 7: ...1BW0 A1 C LD 426 High Efficiency Permanent Magnet Synchronous Motor Instruction Manual ...