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Mitsubishi Electric Manuals
Inverter
FR-F700 Series
Instruction manual
Daily And Periodic Inspection - Mitsubishi Electric FR-F700 Series Instruction Manual
Fr-f700 series
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:
Manual
(66 pages)
,
Technical manual
(550 pages)
,
Programming manual
(216 pages)
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Contents
Table of Contents
Troubleshooting
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Table of Contents
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Inspection Item
6.1.3
Daily and periodic inspection
Inspection
Inspection Item
Item
Check ambient
Surrounding
temperature, humidity,
environment
dust, dirt, etc.
General
Overall
Check for unusual
unit
vibration and noise.
Power
Check that the main
supply
circuit voltages are
voltage
normal.
(1) Check with megger
(across main circuit
terminals and earth
(ground) terminal)
(2) Check for loose
General
screws and bolts.
(3) Check for overheat
traces on the parts.
(4) Clean.
(1) Check conductors
for distortion.
Conductors,
cables
(2) Check cable sheaths
for breakage
Terminal
Check for damage.
block
Main
Inverter
circuit
module,
Check resistance
Converter
across terminals.
module
(1) Check for chatter
during operation.
Relay
(2) Check for rough
surface on
contacts.
Smoothing
Check for fluid leakage
capacitors
and crack.
80
Interval
Periodic*
Method
Measure 5cm (1.97
inches) away from the
inverter.
(Refer to page 6.)
Visual and auditory
checks.
Measure voltages
across inverter terminal
block R/L1, S/L2, T/L3
phases.
(1) Disconnect all
cables from the
inverter and
measure across
terminals R/L1, S/
L2, T/L3, U, V, W
and earth terminal
with megger. (Refer
to page 88.)
(2) Retighten.
(3) Visual check
(1)(2)
Visual check
Visual check
Disconnect all cables
from the inverter and
measure across
terminals R/L1, S/L2, T/
L3, P/ , N/ and U, V,
W, P/ , N/ with a meter
range of 100 .
(1) Auditory check.
(2) Visual check
(3) Judge by the inrush
current limit circuit
and the life check of
the relay.
Visual check and judge
by the life check of the
main circuit capacitor.
Criterion
Instrument
Ambient
temperature:
-10°C to +50°C
Thermometer,
(14°F to 122°F),
hygrometer,
non-freezing.
recorder
Ambient humidity:
90% or less, non-
condensing.
No fault
Within permissible
Tester,
AC (DC) voltage
digital
fluctuation
multimeter
(Refer to page 90.)
(1)
500VDC
5M
or more.
class
(2)(3)
megger
No fault
(1)(2)
No fault
No fault
Analog
(Refer to page 83)
tester
(1)(2) No fault
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Table of Contents
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