BENSHAW RSi GX Series User Manual

Daily and Periodic Inspection Items
8.8 Daily and Periodic Inspection Items
155
8 - Troubleshooting & Maintenance
Inspection
Location
Inspection
Item
Inspection
Period
Inspection Method Criterion
Measuring
Instrument
Daily
1year
2year
All
Environment
Is there any dust?
1Is the ambient temperature and humidity
adequate?
Refer to the precautions
O
Temperature:
-10~+40 no freezing.
Humidity:
Under 90% no dew
Thermometer,
Hygrometer,
Recorder
Equipment Is there any abnormal oscillation or noise? Use sight and hearing No abnormality
O
Input
Voltage
Is the input voltage of the main circuit
normal?
Measure the voltage between the
O
terminals L1/R, L2/S, L3/T
Digital Multi-
Meter/Tester
Main Circuit
All
Megger check
(between the main circuit and the ground)
Are any fixed parts removed?
Are there any traces of overheating at each
component’s cleaning?
O
O
O
None. Consult Factory
Tighten the screws.
Visual check.
No fault
Conductor /
Wire
Is the conductor oxidized?
Is the wire coating damaged?
O
O
Visual check No fault
Terminal Is there any damage? Visual check No fault
O
IGBT
Module/
Diode
Module
Check the resistance between each of the
terminals.
Undo the VFD connection and
O
measure the resistance between
R,S,T and U,V,W with a tester.
(Refer ‘How to Check
Power Components")
Digital
Multi-Meter /
Analog Tester
Smoothing
Capacitor
Is there any liquid coming out?
Is the safety pin out, and is there any
swelling?
Measure the capacitance.
O
OO
Visual check.
Measure with a capacitance-
measuring device.
No fault
Over 85% of the rated
capacity
Capacitance
Measuring
Device
Relay
Is there any chattering noise during
operation?
Is there any damage to the contact
O
O
Auditory check.
Visual check
No fault
Resistor
Is there any damage to the resistor
insulation?
Is the wiring in the resistor damaged
(open)?
O
O
Visual check.
Disconnect one of the
connections and measure with a
tester.
No fault
Error must be within 10%
the displayed resistance
Digital
MultiMeter /
Analog Tester
Control Circuit
Protective Circuit
Operation
Check
Is there any unbalance between each phases
of the output voltage?
Nothing must be wrong with display circuit
after executing the sequence protective
operation
O
O
Measure the voltage between the
output terminals U, V and W.
Short and open the VFD
protective circuit output.
The voltage balance
between the phases for
200V (800V) class is
under 4V (8V).The fault
circuit operates according
to the sequence.
Digital
Multi-Meter/
Rectifying
Voltmeter
Cooling
System
Cooling Fan Is there any abnormal oscillation or noise?
Is the connection area loose?
OO
Turn OFF the power and turn the
fan by hand.
Tighten the connections.
Must rotate smoothly.
No fault
Display
Meter Is the displayed value correct?
OO
Check the meter reading at the
exterior of the panel
Check the specified and
management values.
Voltmeter /
Ammeter etc.
Motor
All Are there any abnormal vibrations or noise?
Is there any unusual odor?
O
O
Auditory, sensory, visual check.
Check for overheat and damage.
No fault
Insulation
Resistor
Megger check (between the output terminals
and the ground terminal)
Disconnect motor from VFD and
O
short motor leads together.
Over 5MO 500V class
Megger

BENSHAW RSi GX Series Specifications

General

Brand	BENSHAW
Model	RSi GX Series
Category	DC Drives
Language	English