GE Fuji Electric AF-300ES Instructions Manual page 107

( 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.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
L U
Has power failure
Yes
(including
momentary power
failure) taken place?
No
Has the power
circuit been Replace the
Yes
subjected to defective compo-
component failure nent or repair the
or poor power poor connection.
connection?
No
Is the power
No
voltage within the
range of the
specified value?
Yes
Does another load
exist which
requires a large Yes
starting current
within the same
power system?
No
Does the condition
occur when the
circuit breaker
Yes
and/or electro-
magnetic
contactor are
turned "ON"?
No
Is the main DC
No
circuit voltage
(between (+) and
(–) below the lower
limit voltage value?
Yes
Failure in the
drive control
circuit or noise
related mis-
operation can be
considered.
Contact GE Fuji.
8-11
Reset and
continue
operation.
Investigate the
power system and
revamp to satisfy
the system
specification.
No
Is the power
transformer rated
at the correct KVA?
Yes
Failure in Drive