Function name Details
Display
(Key pad)
Overload
The electronic
thermal
relay functions
with
the inverse
time
shut down
(Electronic
ln-
characteristic
to
protect
the
output
transistor
when 150% or
r , , ..
(THT)
thermol
verter
more of the inverter
rated
output
current
flows
but
the
'
,-"
retev)
overcurrent
shut
down
is
not
activated
(under
200%).
(*
1)
EEPROM
The
output
will
stop
when
the
EEPROM
which
stores
the
PE
(PE)
breakage
parameter
set values breaks.
When 150%
(*2)
or more of the inverter
rated
current
flows
to
the
motor
during
acceleration (or
constant
speed
operation),
this
function
stops
increasing of frequency
(or
reduces frequency)
until the load
current
decreases,
to
prevent the inverter
from
n,
r
(OL
T)
overcurrent
tripping. When the load current has decreased below
""
Stall prevention
150%,
this
function
allows
the
inverter
to
return
to
and
continue
Whon
stopped
the
previous
operation.
During deceleration, in contrast, if DC
dueto this
voltage
in the
inverter
exceeds the rated value, this function
function
from 0
stops
reducing frequency
to
prevent
the regenerative
overvoltage
constant
speed
shut
off
from
being
activated.
When the regenerative energy
operation.
becomes low,
this
function
continues deceleration again.
Insufficient
The control circuit will
not
function properly if the inverter
power
voltage
voltage
drops, and will
also
cause an insufficient
motor
torque
warning
and
increased
heat
generation. The inverter
output
will
stop
whe
,-"",
(UV)
(*3)
the
power
voltage
drops
below
approx.
AC 115V.
Operation
will
resume when the
power
voltage
is restored
to
a
correct
value.
-57-
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