GE Industrial Solutions AF-300E$ - Manual (Page 106)

8-11
( 4 ) Under-voltage
Note 1 – When the DC bus capacitor is discharged by a system power failure and the control power of the drive is
reduced,automatic restart after momentary power outage may take place. (Refer to Function Code 10 setting.) When the
Function Codes 82, 83, 84 and 85 are selected, no resetting is required. After the power is restored, automatic restart will
begin. The length of time of the power ride thru will be determined by drive rating.
L U
Has the power
circuit been
subjected to
component failure
or poor power
connection?
Does another load
exist which
requires a large
starting current
within the same
power system?
Yes
Investigate the
power system and
revamp to satisfy
the system
specification.
No
Is the power
transformer rated
at the correct KVA?
Failure in Drive
Reset and
continue
operation.
Yes
Replace the
defective compo-
nent or repair the
poor connection.
Yes
Failure in the
drive control
circuit or noise
related mis-
operation can be
considered.
Contact GE Fuji.
Is the main DC
circuit voltage
(between (+) and
(–) below the lower
limit voltage value?
Does the condition
occur when the
circuit breaker
and/or electro-
magnetic
contactor are
turned "ON"?
Is the power
voltage within the
range of the
specified value?
Has power failure
(including
momentary power
failure) taken place?
No
Yes
No
Yes
Yes
No
No
Yes
No
No