LSIS S100 Series Troubleshooting Manual

3. Maintenance
34
Part
Category
Check points
Method
Standard
Equipment
Resistors
Is there any damage
on the resistors?
Visual
inspection
All clear
Digital multimeter
/ Analog tester
Check disconnection
Remove one
side and
measure
Must be within
±10% of the rated
resistance
Control /
Protection
circuit
Check
operation
Check imbalance of
output voltage
during operation
Measure
voltage
between output
terminal U/V/W
Phase-to-phase
voltage balance:
Within 4V for 200V
Within 8V for 400V
Digital multimeter
/ DC Voltemeter
Is there any error in
the display circuit
after the sequence
protection test?
Test inverter
output
protection at
both short and
open circuit
conditions
Circuit must work
according to the
sequence
Cooling
system
Cooling fan
Are there any loose
parts around the
fan?
Tighten all
screws
All clear
-
Display
Display
device
Is the display value
normal?
Check the
command
values on the
display device
Specified values
and manageable
values must match
Voltmeter
Ammeter
3.1.3 Bi-Annual Inspections
Part
Category
Check points
Method
Standard
Equipment
Motor
Insulation
resistors
Megger test
(between
input/output
terminals and earth
terminal)
Disconnect the
cables for
terminals
U/V/ W and test
the wiring
Above 5MΩ
DC 500V Megger
Caution
Do not run the Megger (Insulation Resistance Test) on the control circuit as it may lead to damage
to the product.

LSIS S100 Series Specifications

General

Brand	LSIS
Model	S100 Series
Category	Controller
Language	English