Mitsubishi Electric FR-A520-0.4K-NA Instruction Manual page 165

Pr. 251 "Output phase failure protection selection"
You can make invalid the output phase failure protection (E.LF) function which stops the inverter output if one
of the three phases (U, V, W) on the inverter's output side (load side) becomes open.
Parameter
Setting Range
Number
251 0, 1
Pr. 252 "override bias"
Pr. 253 "override gain"
You can extend the 50% to 150% override range (to 0% to 200%), which is covered when Pr. 73 "0 to 5V, 0
to 10V selection" is used to select the override, and set the override value as desired.
Parameter Number
252
253
Minimum
Setting Factory Setting
Increments
1
Minimum Setting
Setting Range
0 to 200%
0 to 200%
200
150
Pr. 252
100
Pr. 253
50
0
0V
Description
0: Without output phase failure protection
1
1: With output phase failure protection
Pr. 73 "0 to 5V, 0 to 10V selection"
Factory Setting
Increments
0.1%
0.1%
Factory setting
(50% to 150%)
2.5V 5V
(5V) (10V)
Voltage across 2-5
153
PARAMETERS
Related parameters
50%
150%