Inovance H0U-88B1G - Page 54

Phenomenon Possible Cause Checking Item Handling Method
Over current
occurs in
power-line drive
mode.
The
transformation
ratio setting of
CT1 is not
accurate. The
main motor rated
current setting is
not accurate.
Check whether
the actually
measured
current of the
main motor
displayed on
the controller is
in line with the
main motor
rated current.
”Ensure that
“Protection current”
is greater than
“rated current”.
Over current fault
is reported by the
fan.
The
transformation
ratio setting of
CT2 is not
accurate. The fan
rated current
setting is not
accurate.
Check whether
the actually
measured
current of the
fan displayed
on the
controller is in
line with the
fan rated
current.
Check whether
the protection
current is too
low.
Ensure that
“Protection current”
is greater than
“rated current”.
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