Mitsubishi FR - S500 Instruction Manual page 161

Inspection
Description
Item
(1) Check
Operation
(2) Perform
check
(1) Check for
Cooling
fan
(2) Check for
(1) Check for
Display
(2) Clean.
Check that
reading is
Meter
normal.
(1) Check for
General (2) Check for
(1) Check with
Insulation
resistance
Note: The value for the 400V class is indicated in the parentheses.
* For periodic inspection, contact you nearest Mitsubishi sales representative.
Interval
Periodic*
balance of
output
voltages
across
phases with
inverter
operated
independently.
sequence
protective
operation
test to make
sure there is
no fault in
protective or
display
circuits.
unusual
vibration and
noise.
loose
connection.
LED lamp
blown.
unusual
vibration
and noise.
unusual
odor.
megger
(across
terminals
and ground
terminal).
Method
(1) Measure (1) Phase-to-
voltage
across
inverter
output
terminals U-
V-W.
(2) Simulate
connection of (2) Fault must
inverter
protective
circuit output
terminals.
(1) Turn by hand No unusual
with power vibration and
off. unusual noise.
(2) Visual check.
(1) Lamps
(1) Check that
indicate
indicator
lamps on
panel.
(2) Clean with
rag.
Must satisfy
Check reading of
specified and
management
meters on panel.
values.
(1) Auditory, (1), (2) No fault.
sensory,
visual
checks.
(2) Check for
unusual odor
due to
overheat,
damage, etc.
(1) Disconnect 5M
cables from
U, V, W
(including
motor cables).
152
Criterion Instrument
Digital
phase multimeter,
voltage rectifier type
balance voltmeter
within 4V
(8V) for
200V
(400V).
occur
because of
sequence.
lamps are
lit.
Voltmeter,
ammeter,
etc.
or more. 500V
megger
3