9.
PRECAUTIONS
ON
OP6RATWG
THE
RARAMHERWCT
~~ ~~ ~~~~
When
operating the parameter
unit,
if
review
ttm
following precautions
-
-
the
set value cannot
be
writtin or a wmg value
is
witten.
..
(1)
Plscattionr for
operating
the
in-
verter
by
the
parameter
unit
lnvetter Operation uslng the parameter
unit is enabled only when the
[PU OP]
key is pressed or the
PU
operation or
combination operation mode is selected
by
Pr.
79.
In the monitor mode
(MONITORrode
lamp is lit), the operation
cannot
be
set.
(blinks)
\+
(unsl)
In
the
fdbwing
cases,
jog operation is
not possible.
(1)
While the motor is running.
(blinks)
(MnkS)
To
execute jog operation, stop the
motor first.
(2)
If
the setting for
jog
frequency (Pr.
15)
is lower than the setting for
operation start frequency (Pr.
13).
-
(2)
Precautions
for
monitoring
-
While operating the motor from the
parameter unit, when the start key
([FWD]
or
[REV)
is pressed after set-
ting
the
operation frequency, the mode
automticalty
switches to the monitor
mode.
-
(3)
Precautions
for
operation
-
r
In
the
fobwing
cases,
the operation
mode cannot be switched by pressing
the
[PU OP]
or
[EXT
OP]
key.
(1)
While the motor is running.
(4)
Precautions for
the
number
of
-
r
digits
and a decimal
point
(2)
The external start signal (across
terminals STR or STF, and
SD)
is
ON.
(3)
The setting for operation mode
selection (Pr.
79)
is any of the fol-
lowing values.
Set value:
1
to
4,
7,
8
If
"0" is set for operation mode selection
(Pr.
79),
the external operation
mode
is
established if the following is attempted
-
turning
off
power supply to the inverter
and then turn it on again, or resetting.
Precautions for
the
number
of
-
digits
and a decimal
polnt
The maximum number
of
digits for a
value to
be
input is
4.
It a value is input
exceeding this limit, the most significant
digit is ignored. See the example below.
Display
on
1
23
4
s
-8
-,
the
parameter
(input)
i~gnored
(5)
Precautions for setting the
operating frequency
When the operation frequency has
been set using the
[A]
and
p]
keys
(step setting) or directly (direct setting),
setting is allowed only in the range es-
tablished by the upper limit and lower
limit frequencies.
-22-
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