Parameter Write Inhibit Selection (Pr. 77) - Mitsubishi FR-F500 Instruction Manual

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 Factory
Number Setting
77 0
<Setting>
Pr. 77 Setting
Write enabled during a stop only.
0
Parameter values may only be written during a stop in the PU operation mode. (Note 1)
Write disabled.
1
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
23
48
49
60
61
66
71
79
100
101
102
103
104
105
106
107
108
109
3. By setting "1" in Pr. 77, the following clear operations can be inhibited:
Parameter clear
All clear
User clear
Setting Range
0, 1, 2
Function
Name
Stall prevention operation level
compensation factor at double speed
Second stall prevention operation
current
Second stall prevention operation
frequency
Intelligent mode selection
Reference current
Stall prevention operation reduction
starting frequency
Applied motor
Operation mode selection
V/F1 (first frequency)
V/F1 (first frequency voltage)
V/F2 (second frequency)
V/F2 (second frequency voltage)
V/F3 (third frequency)
V/F3 (third frequency voltage)
V/F4 (fourth frequency)
V/F4 (fourth frequency voltage)
V/F5 (fifth frequency)
V/F5 (fifth frequency voltage)
Related parameters
Pr. 79 "operation mode selection"
Parameter
Number
Commercial power supply-inverter
135 switch-over sequence output
terminal selection
136 MC switch-over interlock time
137 Start waiting time
Commercial power supply-inverter
138 switch-over selection at alarm
occurrence
Automatic inverter-commercial
139
power supply switch-over frequency
180 RL terminal function selection
181 RM terminal function selection
182 RH terminal function selection
183 RT terminal function selection
184 AU terminal function selection
185 JOG terminal function selection
186 CS terminal function selection
190 RUN terminal function selection
191 SU terminal function selection
192 IPF terminal function selection
193 OL terminal function selection
194 FU terminal function selection
195 A, B, C terminal function selection
103
PARAMETERS
Name
4