Drive Overheat; External Alarm Input; Drive Overload - GE Fuji Electric AF-300 MICRO-SAVER II Instructions Manual

( 3 ) Undervoltage
L U
Has power failure
(including
momentary power
failure) taken place?
No
Has the power
circuit been
subjected to
component failure
or poor power
connection?
No
Is the power supply
voltage within the
range of the
specified value?
Yes
Does another load
exist which
requires a large
starting current
within the same
power system?
No
Does the condition
occur when the
circuit breaker
and/or electro-
magnetic
contactor are
turned "ON"?
Possible Drive
control circuit or
noise related
malfunction.
Contact GE Fuji
Electric.
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 Funtion Code 14 setting.)
8-4
Reset and
Yes
continue
operation.
Replace the
Yes
defective compo-
nent or repair the
poor connection.
No
Investigate the
Yes power system and
correct to satisfy
the system
specification.
No
Is the power
Yes
transformer rated
at the correct KVA?
Yes
No
( 4 ) Drive overheated
– Drive Overheating

– Drive Overload

O H 1
Is the Drive load
too large?
Is the cooling fan
in the Drive operat-
ing? (Above 2 HP)
Is the movement of
the Drive cooling
air obstructed?
Is the ambient
temperature within
the specified limit?
Bring the ambient
condition to within
the specified limit.
Terminal C1–CM or
12-11 connected in
reverse.

( 5 ) External alarm input

O H 2
Is the connection
between THR and
CM correct?
Is the alarm function
of externally
connected equip-
ment activating?
Eliminate the cause of
the alarm.
Reduce the load or
Yes
use a Drive with
higher capacity.
No
Replace the cooling
No
fan.
Yes
Yes
Remove
obstructions.
No
Possible Drive
failure or malfunc-
Yes
tion due to electrical
noise. Contact GE
Fuji Electric
No
No
Yes
Connect
correctly.
No
Repair the wiring
and/or connections.
Yes
Possible Drive
failure or malfunc-
No
tion to electrical
noise. Contact GE
Fuji Electric
Yes
8-5