Daily And Periodic Inspection - Mitsubishi FR-E500 Series Instruction Manual

5.3.6 Daily and periodic inspection

Inspection
Description
Item
Check ambient
Surrounding
temperature, humidity,
environment
dust, dirt, etc.
Check for unusual
Overall unit
vibration and noise.
Power Check that main
supply circuit voltage is
voltage normal.
(1) Check with megger
(across main
circuit terminals
and ground
terminal).
General (2) Check for loose
screws and bolts.
(3) Check for overheat
on each part.
(4) Clean.
(1) Check conductors
for distortion.
Conductors,
(2) Check cable
cables
sheaths for
breakage.
Terminal
Check for damage.
block
Inverter
module Check resistance
Converter across terminals.
module
(1) Check for liquid
leakage.
(2) Check for safety
Smoothing
valve projection
and bulge.
capacitor
(3) Measure
electrostatic
capacity.
Interval
Periodic*
'
Refer to page 9.
Visual and auditory
'
checks.
Measure voltage
across inverter
'
terminals R-S-T (L
L -L
2 3
' (1) Disconnect all
cables from
inverter and
measure across
terminals R (L
'
S (L
V, W and ground
'
terminal with
megger.
'
(2) Retighten.
(3) Visual check.
'
(1), (2) Visual
'
'
Visual check
Disconnect cables
from inverter and
measure across
terminals R, S, T-P,
'
N (L
1
and across U, V, W-
P (+), N (−) with a
meter with a 100Ω
range.
'
(1), (2) Visual
'
(3) Measure with
'
capacity meter.
142
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PROTECTIVE FUNCTIONS
Method Criterion
Ambient
temperature:
-10°C to +50°C,
non-freezing.
Ambient
humidity: 90%
or less, non-
condensing.
No fault.
Within
permissible AC
(DC) voltage
-
fluctuation
1
).
(Refer to page
149)
(1) 5MΩ or
more.
),
1
), T (L ), U, (2), (3) No
2 3
fault.
(1), (2) No
check. fault.
No fault
Refer to page
- +, −),
, L , L
2 3
144.
(1), (2) No
check. fault.
(3) 85% or more
of rated
capacity.
Instrument
Thermo-
meter,
hygrometer,
recorder
Meter,
digital
multimeter
500VDC
class
megger
Analog
meter
Capacity
5
meter