4-146
07 Start/Stop Parameters
07-00
Momentary power loss and restart
Range
【
0
】
: Disabled
【
1
】
: Enabled
07-01
Fault reset time
Range
【
0~7200
】
Sec
07-02
Number of restart attempts
Range
【
0~10
】
07-03
Reset Mode Setting
Range
【
0
】
: Enable Reset Only when Run Command is Off
【
1
】
: Enable Reset when Run Command is On or Off
Inverter output will be turned off during a sudden drop in input voltage below the under voltage level.
07-00=0
: Inverter trips on “UV” fault on power loss and will not restart.
07-00=1
: Inverter resumes operation at half of the output frequency before power-loss after power has been
restored. There is no limitation on the number of restarts.
The momentary power loss function is enabled as long as the inverter CPU still has power and the inverter will
restart when power is restored based on the setting of parameters 00-02, 07-04 and status of External run
command.
Caution:
After a power loss and Run mode is set to External Run (00-02=1) and Direct start on power up is
enabled (07-04=0) the inverter will automatically start when power is restored.
To ensure safety of operators and to avoid any damages to the machinery, all necessary safety measure must be
taken and an inverter input disconnect switch must be used.
The automatic restart function can be used for the following faults. Please note that when the fault is not listed in
the table the inverter will not attempt an automatic restart.
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)
Note: Auto restart after a fault will not function during DC injection braking or decelerating to stop.
