Mitsubishi FR-F500 Instruction Manual page 192

Area of
Inspection
Inspec-
Item
tion
Inverter
module, Check resistance
Converter across terminals.
module
Main (1) Check for chatter
circuit during operation.
Relay
(2) Check for rough
surface on contacts.
(1) Check for crack in
resistor insulation.
(2) Check for open
Resistor cable.
(1) Check balance of
output voltages
across phases with
Control inverter operated
circuit Operation independently.
Protec- check (2) Perform sequence
tive circuit protective operation
test to make sure of
no fault in protective
and display circuits.
(1) Check for unusual
Cooling vibration and noise.
Cooling fan
system (2) Check for loose
connection.
(1) Check if LED lamp
Display is blown.
(2) Clean.
Display
Check that reading is
Meter
normal.
(1) Check for unusual
vibration and noise.
(2) Check for unusual
General
odor.
Motor
Check with megger
Insulation
(across terminals and
resistance
ground terminal).
Note: Values in parentheses are those of the 400V class.
*For periodic inspection, consult Mitsubishi.
Interval
Periodic*
Description
Daily 1
year
$
$
$
$
$
$
$
$
$
$
$
$
$
PROTECTIVE FUNCTIONS
Method
2
years
Disconnect cables
from inverter and
measure across
terminals R, S, T,
$
P, N and U, V, W,
P, N L , L , L ,
1 2 3
and U, V, W, ,
with a meter range of
100 .
(1) Auditory check.
(2) Visual check.
(1) Visual check.
Cement resistor,
wire-wound
resistor.
(2) Disconnect one
end and measure
with a meter.
(1) Measure voltage
across inverter
output terminals U-
V-W.
(2) Simulatively
connect or
disconnect inverter
protective circuit
output terminals.
(1) Turn by hand with
power off.
(2) Visual check
(1) Light indicator
lamps on panel.
(2) Clean with rag.
Check reading of
meters on panel.
(1) Auditory, sensory,
visual checks.
(2) Check for unusual
odor due to
overheating,
damage, etc.
Disconnect cables
from U, V, W,
$
including motor
cables.
178
Crlterlon Instrument
(Refer to page 179) Analog meter
(1) No fault.
(2) No fault.
(1) No fault.
(2) Error should
be within 10%
Meter, digital
of indicated
multimeter
resistance
value.
(1) Phase-to-
phase voltage
balance within
4V(8V) for Digital
200V(400V). multimeter,
(2) Fault must rectifier type
occur because voltmeter
of sequence.
No unusual
vibration, unusual
noise.
(1) Check that
lamps are lit.
Must satisfy
specified and Voltmeter,
management ammeter, etc.
values.
(1), (2) No fault.
5M or more 500V megger
5