Chapter 7 - Options
180
(5) Monitoring LEDs
* Group 1
* Group 2
* Group 3
RESET
POWER
RUN
OHT
OCT
POWER
RUN
OHT
OCT
FOT
LED
Description
OHT
(GREEN,
LEFT)
When heat sink is overheated and the level exceeds its setting
limit, overheat protection is activated and OHT LED is turned ON
after DBU’s signal is shut off.
POWER
(RED)
POWER LED is turned ON upon inverter Power ON because
normally it is connected to the inverter.
RUN
(GREEN,
RIGHT)
RUN LED is blinking while DBU is operating normally by motor
regenerating energy.
OHT
POWER
RUN
LED
Description
RESET
Press this switch to release OCT FAULT status. Pressing this
turns the OCT LED off.
POWER
(GREEN)
POWER LED is turned ON upon inverter Power ON because
normally it is connected to the inverter.
RUN
(GREEN)
RUN LED is blinking while DBU is operating normally by motor
regenerating energy.
OHT (RED)
When heat sink is overheated and the level exceeds its setting
limit, overheat protection is activated and OHT LED is turned ON
after DBU’s signal is shut off.
OCT (RED)
Over current trip signal. When overcurrent is flowed to the iGBT,
protection function shuts off the operating signal and OCT LED is
tured ON.
LED
Description
POWER
(RED)
POWER LED is turned ON upon inverter Power ON because
normally it is connected to the inverter.
RUN
(GREEN)
RUN LED is blinking while DBU is operating normally by motor
regenerating energy.
OHT
(RED)
When heat sink is overheated and the level exceeds its setting
limit, overheat protection is activated and OHT LED is turned ON
after DBU’s signal is shut off.
OCT
(RED)
Over current trip signal. When overcurrent is flowed to the iGBT,
protection function shuts off the operating signal and OCT LED is
tured ON.
FOT
(RED)
FOT LED is turned ON when fuse is opened to shut the
overcurrent during braking.
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