Measurement Points And Meters - GE Fuji Electric AF-300ES Instructions Manual

INSPECTION ITEMS CHART
Item Inspection Criteria
Power Source Within permissible limits (170 - 253 VAC)
Voltage for 230 VAC drives; or (323 - 506) for
460 VAC drives; or (480-575) for
575 VAC drives.
Ambient Within permissible limits (-10
Temperature (+14
Ambient Within permissible limits (20 - 90% RH)
Humidity No dew condensation or freezing
Vibration Within permissible limit (0.6G or less)
Noise Abnormal Audio Noise from cooling
fan, etc.
Odor Smell or burning
Dust Dust accumulation on cooling fins,
cooling fan, or on the control board.
Screws/ Check for any loosening
Connectors

MEASUREMENT POINTS AND METERS

Since the Drive's input/output voltage and current
contain high frequencies, selection of the wrong measur-
ing device can lead to gross miscalculations. When
using a CT (current-detection transformer) to measure
RECOMMENDED MEASUREMENT DEVICE CHART
Item
Input Voltage
Input Current
Input Power
Output Voltage
Output Current
Output Power
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to +50
o
to +122 F)
o o
Simple Measurement
Tester
Clamp Meter
—
Tester
Clamp Meter
—
Corrective Action
Adjust the power supply voltage
C) Investigate cause and make corrections
o
until environment is within permissible limits.
Investigate cause and make corrections
until environment is within permissible limits.
Investigate cause and make adjustments
until within permissible limits.
Contact the supplier where the Drive
was purchased.
Contact the supplier where the Drive
was purchased.
Clean and blow out with compressed air.
Retighten as needed.
the current, the amount of error will be large if the
frequency is low. Because of this, always use a CT with
as large a capacity as possible. See the following chart
and Figure 7-2 for recommended measurement devices.
Precision Measurement
Moving-Iron type voltmeter
Moving-Iron type ammeter
Electrodynamometer type wattmeter
Rectifier type voltmeter
Moving-Iron type ammeter
Electrodynamometer type wattmeter
7-2