Mitsubishi Electric FR-A700 Technical Manual page 350

2.18.2 Parameter write disable selection [Pr. 77]
You can select whether write to various parameters can be
performed or not. Use this function to prevent parameter
values from being rewritten by misoperation.
[Pr. ]
77 Parameter write selection
* [Pr. 77] can be always set independently of the operation mode and operation status.
(1) Write parameters only during stop [Pr. 77 = 0]
Parameters can be written only during a stop in the
PU operation mode.
The shaded parameters in the parameter list (page
120) can always be written, regardless of the
operation mode and operation status. However, [Pr.
72 PWM frequency selection] and [Pr. 240 Soft-PWM
operation selection] can be written during operation in
the PU operation mode, but cannot be written in the
External operation mode.
(2) Disable parameter write [Pr. 77 = 1]
Parameter write is not enabled. (Read is enabled.)
Parameter clear and all parameter clear cannot be
performed, either.
The following parameters can be written even when
[Pr. 77 = 1] .
.
[Pr. ]
22 Stall prevention operation level
Reset selection/disconnected PU
75
detection/PU stop selection
77 Parameter write selection
79 Operation mode selection
160 User group read selection
296* Password lock level
297* Password lock/unlock
*
The setting is available for
Name Initial Value
Name
.
D700
common
(common)
Setting Range
0
1
0
2
(3) Write parameters during operation [Pr. 77 = 2]
Parameters can always be written.
The following parameters cannot be written when the
inverter is running even if [Pr. 77 = 2]. Stop the
inverter when changing their parameter settings.
[Pr. ]
19
*5
23
40 *1 *2
48
49
*3 *4
60
61
*2
66
71
79
80
81
*2 *4
82 *2
83 *2
84
*2
90, 91
*2 *4
92 , 93
*2 *4
94
*2 *4
95
*2 *4
96
*2
100 to 109
135 to 139
A700 F700
178 to 196
E700
178 to 184,
190 to 192
D700
178 to 182, 190,
192
255
256
257
258
384
PARAMETER
Description
Write is enabled only during a stop.
Parameter write is not enabled.
Parameter write is enabled in any operation
mode regardless of operating status.
Name
Base frequency voltage
Stall prevention operation level
compensation factor at double speed
RUN key rotation direction selection
Second stall prevention operation
current
Second stall prevention operation
frequency
Energy saving control selection
Reference current
Stall prevention operation reduction
starting frequency
Applied motor
Operation mode selection
Motor capacity
Number of motor poles
Motor excitation current
Rated motor voltage
Rated motor frequency
,
, (motor constants)
*2 *4
Online auto tuning selection
Auto tuning setting/status
(Adjustable 5 points V/F parameter)
*3 *4
(parameter for electronic bypass
*3 *4
sequence)
(input terminal function selection)
Life alarm status display
Inrush current limit circuit life display
Control circuit capacitor life display
Main circuit capacitor life display