Mitsubishi Electric FR-A700 Series, Technical Manual

Page: 350 / 550

384
PARAMETER
2.18.2 Parameter write disable selection [Pr. 77]
(common)
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.
(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] .
.
* The setting is available for .
(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.
common
[Pr. ] Name Initial Value Setting Range Description
77 Parameter write selection 0
0 Write is enabled only during a stop.
1 Parameter write is not enabled.
2
Parameter write is enabled in any operation
mode regardless of operating status.
* [ Pr. 77 ] can be always set independently of the operation mode and operation status.
[Pr. ] Name
22 Stall prevention operation level
75
Reset selection/disconnected PU
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
D700
[Pr. ] Name
19
*5
Base frequency voltage
23
Stall prevention operation level
compensation factor at double speed
40 *1 *2 RUN key rotation direction selection
48
Second stall prevention operation
current
49 *3 *4
Second stall prevention operation
frequency
60 Energy saving control selection
61 *2
Reference current
66
Stall prevention operation reduction
starting frequency
71 Applied motor
79 Operation mode selection
80 Motor capacity
81 *2 *4 Number of motor poles
82
*2
Motor excitation current
83 *2
Rated motor voltage
84
*2
Rated motor frequency
90, 91
*2 *4
,
92 *2 *4 , 93 *2 *4 ,
94
*2 *4
(motor constants)
95 *2 *4
Online auto tuning selection
96
*2
Auto tuning setting/status
100 to 109
*3 *4
(Adjustable 5 points V/F parameter)
135 to 139
*3 *4
(parameter for electronic bypass
sequence)
178 to 196
178 to 184,
190 to 192
178 to 182, 190,
192
(input terminal function selection)
255 Life alarm status display
256 Inrush current limit circuit life display
257 Control circuit capacitor life display
258 Main circuit capacitor life display
A700 F700
E700
D700