
4-100
Note: Auto restart after a fault will not function during DC injection braking or decelerating to stop.
Notes:
(1)
Fault restart function contains momentary power loss restart and auto reset restart.
(2)
Refer to chapter 10 for troubleshooting and fault diagnostics.
(3)
Refer to speed search function (07-19 to 07-24) for speed search modes selection when power is restored.
Fault reset time (07-01)
Time the AC Drive waits to reset fault.
Momentary power loss restart time is the same as Fault reset time.
07-01 < 07-18: Automatic restart time interval is set by minimum baseblock time (07-18).
07-01 > 07-18: Automatic restart time interval is set by fault reset time (07-01).
Note: Total automatic restart interval time is: 07-18 plus 07-01 plus speed search delay time (07-22).
Refer to figure below for automatic restart interval time.
Fault
Code Description
Number
of
Restarts
UV:
Under
voltage
Unlimited
OC:
Over current
(07-02)
OCA:
Over current during acceleration
(07-02)
OCC:
Over current during constant speed
(07-02)
OCd:
Over
current
during
deceleration
(07-02)
OL1:
Motor
overload
(07-02)
UT:
Under
torque
detection
(07-02)
IPL:
Input
phase
loss
(07-02)
GF:
Ground
fault
(07-02)
OV:
Overvoltage
(07-02)
OL2:
Inverter
overload
(07-02)
OT:
Over-torque
detection
(07-02)
The automatic restart function can be used for the following faults. Please note that if the fault is not listed in the
table, the AC Drive will not attempt an automatic restart.
07-02
07-01 + 07-22
or
07-18 + 07-22
1
2
3
4
5
6
7
8
9
10
Number of restart attempts (07-02)
When the total number of restart attempts has exceeded the number of automatic restart attempts set in parameter
07-02, the AC Drive will turn off the output and the fault contact is activated. Manually resetting the AC Drive is
required at this time.
When the automatic restart function is enabled, the internal automatic restart attempt counter is reset based on the
following actions:
1.No fault occurs in 10 minutes or longer after the automatic restart
2.Reset command to clear fault via input terminal or using the keypad (press STOP/RESET key)
3.Power to the AC Drive is turned off and back on again