Chapter 6 - Parameter Description [FU2]
6-28
FU2-25: Number of Auto Retry
FU2-26: Delay Time Before Auto Retry
This function is used to allow the inverter to reset
itself for a selected number of times after FU2-26
elapses when inverter is tripped. If trip more than
FU2-23 occur, inverter shuts down the output and
displays a trip message. If the trip persists after FU2-
26, number of trip is increased and Auto restart
function is disabled. For example, FU2-25 [Retry
number] is 1 with FU2-26 [Retry delay] set to 10 sec,
if trip persists over 10 seconds and then is reset
(cleared), Auto restart is not performed. Inverter may
be tripped out in Motor Free-run status when this
function is issued. To avoid it, use the speed search
function. Set FU2-22 to ‘xx1x’. See FU2-22 ~ FU2-
24.
Disabled when a low voltage (LV) trip, inverter
disable (BX) or Arm short occurs.
Note: Inverter decreases the retry number by one
as a fault occurs. If trip does not occur after
restarting for 30 seconds, the inverter increases
the retry number by one and maximum number is
limited by the value set in FU2-25.
CAUTION
Particular attention must be directed to this
function as motor restarts automatically after the
fault is reset. Otherwise, it may result in personal
damage.
FU2-40: Motor Capacity Selection
FU2-41: Number of Motor Pole
FU2-42: Rated Motor Slip
FU2-43: Rated Motor Current
FU2-44: No Load Motor Current
FU2-45: Motor Efficiency
FU2-46: Load Inertia
If users do not set these values, inverter will use
factory default values.
This parameter sets the motor capacity. FU2-42
[Rated Motor Slip], FU2-43 [Rated Motor Current],
FU2-44 [No Load Motor Current], FU2-62 [Stator
Resistance], FU2-63 [Rotor Resistance], and FU2-64
[Leakage Inductance] are automatically changed
according to motor capacity.
If FU2-44 [Motor No-load Current] is not correct, run
the inverter without the load in V/F mode and check
the current at the constant run state and enter this
value to FU2-44 [No load current].
This is used to display the motor speed. If you set this
value to 2, inverter will display 3600 rpm instead of
1800rpm at 60Hz output frequency. (See motor
nameplate) When motor pole number is more than 4,
select an inverter one rating higher than that of the
motor because motor rated current is large.
FU2
►
Retry number
25 0
0 25
Factory Default: 0 0
FU2
►
Retry delay
26 1.0 sec
1.0 26
Factory Default: 1.0 sec 1.0
Output Frequency
Time
1
s
Fault 2nd Fault
Restart with
Speed Search
Restart with
Speed Search
t t
t: FU2-26
FU2
►
Motor select
40 5.5kW
4 40
Factory Default: 5.5 kW 4
(This value is set automatically according to the inverter model.)
FU2
►
Pole number
41 4
Factory Default: 4 4
FU2
►
Rated-Slip
42 2.34 Hz
Factory Default: 2.34 Hz 2.34
(This value is set according to the motor capacity set in
FU2-40)
2.34 42
4 41
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