-,
.
,
*.
9.
PRECAUTIONS ON OPERATING
THE
PARAMETER UNIT
(6) Cautlons on writing
the
set
values
Writing is possible only in the PU opera-
tion mode (Pr.79
=
0,
1).
In the external
or
combined operation
mode, it is not possible
to
write the set
value. Remember that “reading” is
pos-
siMe in any of these operation modes.
However, even in the external or con-
bination operation mode, writing is
pos-
sible for the following parameters.
(1) 3-speed setting
’
Pr.4 to Pr.6
(2) Multiple-speed
setting
.....
Pr.24 to Pr.27,
Pr.126 to Pr.133
(3) Display function
...
Pr.54
to
Pr.56
(4) Selection
of
operation mode Pr.79
(5)
FM
terminal calibration
. .
Pr.900
(6) Frequency setting bias and
gain (voltage,
current)
....
Pr.902
to
Pr.905
(7) Key click sound selection
.
Pr.990
(8)
Alarm clear
........
Pr.996
(9) Inverter reset
.......
Pr.997
In the factory-setting status (pr.77
=
0).
writing is not possible while the motor is
running. If writing is attempted in this
status, the error message (Err.) is dis-
played. However, writing is possible for
the following parameters while the motor
is running.
(1) 3-speed setting
’ ’ ’
Pr.4
to
Pr.6
(2) Multiple-speed
setting
....
Pr.24
to
Pr.27,
Pr.126 to Pr.133
(3) Tone modulation control
selection
.............
.
.
Pr.61
(4) PWM frequency selection Pr.72
(5)
Display function
’
Pr.54 to Pr.56
(6) Parameter write disable
Pr.77
(7)
FM
terminal calibration
. .
Pr.900
(8)
Frequency setting bias and
selection
..........
gain (voltage,
current)
’
Pr.902 to Pr.905
(9) Key click sound selection
’.
Pr.990
(IO)
Alarm clear.
...........
Pr.996
(1
1)
Inverter reset
............
Pr.997
In addition to the cases indicated above,
writing of the set values is disabled in the
following
cases
as well. If writing is at-
tempted in these cases, the error mes-
sage
(En.)
is displayed.
(1) Parameter write disable selection
(Pr.77) is set for ‘disable”.
(2) A parameter number not given in
the parameter list (page
57)
is
selected.
(3) A value outside the permissible set-
ting range is set.
(4) A value outside the range estab-
lished by the upper and lower
limits of frequency (Pr.1 and Pr.2)
is set.
If
the error message (Err.) is displayed
when writing is attempted, repeat the
operation from the beginning after press-
ing the
[SET]
key.
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