GE Fuji Electric MICRO-SAVER AF-300, Instructions Manual

Page: 65 / 78

S e c t i o n 8
The
AF-300
functions have been incorporated in the basic software
and be the LED display.
Protective
Function
Function Explanation
LED
Display
Fault Relay
B C)
Overcurrent
Ground Fault
Over voltage
Under voltage
and momentary
power
protectton
Drive
Over heat
Faulty Detects a the analog frequency
Frequency
(overload of the 0 V power supply for the potentiometer
setting signal and reverse polarity of the signal)
I I I
Overload
thermal
overload
External
error
Detects when incompatible Function Codes selected Erl
I
Keypad Detects a error between
communication
control PCB and keypad panel
DSP error
Stall
Preventton
TABLE 8: Fault Condition Description and Operation
Protects the when the output current reaches the
momentary overcurrent protectron level
The protection
IS
effective for output terminals- U, V, W
At accel X
o c 2 At decel
o c 3 At oper
Grounded output. The protection is effective for Drive ouput
terminals U, V, W. (Only on start-up )
Protects the when the DC bus voltage reaches the
momentary overvoltage protection level during the braking
operation
(Drive cannot protect against an line
overvoltage.)
E F Ground
Fault
o u
At accel
At decel
At oper
(Note 1) Alarm hold
When a protection function has been activated and the alarm
IS
output, the AC contactor on the
power supply side
IS
switched off, and the Drive’s control power is not the alarm signal not be
retained
(Note 2) Reset command
key on the keypad panel or turn on the control terminals RST-CM ON to reset the alarm
(Note 3) Information on the last four protechon function trips will be stored memory. After calling up F-29, press the
to display the information for the first, second and third preceding protection function trips
(Note 4) The of past protection function can also be by pressing key the display of the
current protection function trip.
(Note 5) If the Drive stops and none of the error messages described above being displayed, try the power off and
then back on to restart
8 - 1
X
X
Protects the when the DC bus voltage reaches the
momentary low voltage protechon level less than
for 15 MS. Output alarm relay b c)
IS
dependent
on Code settings
X
O o r l
no
Detects overheating of the caused by an overload,
low-speed operation, cooling fan failure,
abnormal temperatures, etc
Detects the where the load exceeds the Drive’s
rated overload current
Protects the Drive and motor with electronic overload
Range of setting 20 to 105% of
rated current
I
Stops Drive by an external alarm signal connected to
I I I
Detection of a DSP malfunction as a result of external noise
interference or
I
Prevents OC-trip by the frequency output at high current when
current limit is disabled and Drive
IS
accelerating, or when high impact
loads are applied to the motor. Second, by decreasing frequency
level when current
IS
and its value exceeded
steady state operation and load
X