Mitsubishi Electric FR-D720-0.2K-G, Instruction Manual

Page: 163 / 302

160
Misoperation prevention and parameter setting restriction
4.15.2 Parameter write disable selection (Pr. 77)
(1) Write parameters only during stop (setting "0" initial value)
 Parameters can be written only during a stop in the PU operation mode.
 The shaded parameters in the parameter list (page 54) can always be written regardless of the operation mode and
operating status.
(2) Inhibit parameter write (setting " 1" )
(3) Write parameters during operation (setting "2")

Parameters can always be written.
 The following parameters cannot be written when the drive unit is running even if Pr. 77 = "2". Stop the drive unit when
changing their parameter settings.
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.
Parameter
Number
Name Initial Value Setting Range Description
77 Parameter write selection
0
0 Write is enabled only during stop.
1 Parameter cannot be written.
2
Parameter write is enabled in any operation
mode regardless of operation status.
The above parameter can be set when Pr. 160 Extended function display selection = "0". (Refer to page 161.)
Pr. 77 can always be set independently from the operation mode and operation status.
 Parameter write is not enabled.
(Read is enabled.)
 Parameter clear and all parameter clear cannot be
performed, either.
 The parameters given on the right can be written even if Pr.
77
= "1".
Parameter
Number
Name
22 Stall prevention operation level
75
Reset selection/disconnected PU detection/
PU stop selection
77 Parameter write selection
79 Operation mode selection
160 Extended function display selection
296 Password lock level
297 Password lock/unlock
997 Fault initiation
Parameter
Number
Name
40 RUN key rotation direction selection
48 Second stall prevention operation current
71 Applied motor
79 Operation mode selection
80 Motor capacity
81 Number of motor poles
82 Motor excitation current
83 Rated motor voltage
84 Rated motor speed
90, 92, 93 (Motor constant)
96 Auto tuning setting/status
178 to 182 (input terminal function selection)
190, 192 (output terminal function selection)
561 PTC thermistor protection level
643 Voltage compensation amount setting
658 Wiring resistance
672, 702,
706, 707,
711, 712,
717, 721, 724
to 726, 859
(PM motor tuning)
736 Electromagnetic brake interlock time
785 PM control torque boost
795 DC brake torque boost
800 Control method selection
998 PM parameter initialization
999 Automatic parameter setting
Parameter
Number
Name