Filter
Top Products
PARAMETERS
103
4.2.35 Parameter write inhibit selection (Pr. 77)
Pr. 77 "parameter write disable selection"
You can select between write-enable and disable for parameters. This function is used to prevent parameter
values from being rewritten by accident.
Parameter
Number
Factory
Setting
Setting Range
77 0 0, 1, 2
<Setting>
Pr. 77 Setting Function
0
Write enabled during a stop only.
Parameter values may only be written during a stop in the PU operation mode. (Note 1)
1
Write disabled.
Values of Pr. 22, Pr. 75, Pr. 77 and Pr. 79 "operation mode selection" can be written.
2 Write enabled even during operation.
Note: 1. The values of the parameters half-tone screened in "4.1.1 Parameter list" can be set at any time.
(Pr. 72 and Pr. 240 values cannot be set during external operation.)
2. If Pr. 77 = "2", the values of the following parameters cannot be written during operation. Stop
operation when changing their parameter settings.
Parameter
Number
Name
Parameter
Number
Name
23
Stall prevention operation level
compensation factor at double speed
135
Commercial power supply-inverter
switch-over sequence output
terminal selection
48
Second stall prevention operation
current
136 MC switch-over interlock time
49
Second stall prevention operation
frequency
137 Start waiting time
60 Intelligent mode selection 138
Commercial power supply-inverter
switch-over selection at alarm
occurrence
61 Reference current 139
Automatic inverter-commercial
power supply switch-over frequency
66
Stall prevention operation reduction
starting frequency
180 RL terminal function selection
71 Applied motor 181 RM terminal function selection
79 Operation mode selection 182 RH terminal function selection
100 V/F1 (first frequency) 183 RT terminal function selection
101 V/F1 (first frequency voltage) 184 AU terminal function selection
102 V/F2 (second frequency) 185 JOG terminal function selection
103 V/F2 (second frequency voltage) 186 CS terminal function selection
104 V/F3 (third frequency) 190 RUN terminal function selection
105 V/F3 (third frequency voltage) 191 SU terminal function selection
106 V/F4 (fourth frequency) 192 IPF terminal function selection
107 V/F4 (fourth frequency voltage) 193 OL terminal function selection
108 V/F5 (fifth frequency) 194 FU terminal function selection
109 V/F5 (fifth frequency voltage) 195 A, B, C terminal function selection
3. By setting "1" in Pr. 77, the following clear operations can be inhibited:
•
Parameter clear
•
All clear
•
User clear
Pr. 79 "operation mode selection"
Related parameters
4