Detailed operation by function groups
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6.8.11 Overload limit selection, level, time (PRT_22–24)
When the output current of the inverter is maintained above the overload control
level during an overload time limit, the inverter cuts off the output and displays a
trip message. PRT_22–24 (Overload limit) function cuts off the inverter’s output
and displays the inverter’s output. This function is for detecting load errors, such
as, a motor failure, system failure, and other mechanical failures.
Code
Keypad display
Name
Range
Unit
Default setting
PRT_22
OLT Select
Overload limit selection
0 (No) /
1 (Yes)
-
1 (Yes)
PRT_23
OLT Level
Overload limit level
30–250
%
180
PRT_24
OLT Time
Overload limit time
0–60
sec
30
Note
The overload warning level is set as a percentage of the motor’s rated current.
6.8.12 Inv OH Warn
When the temperature of the inverter’s heat sink exceeds the reference
temperature, a signal is sent. The inverter overheat function detects if the
temperature of the heat sink of the inverter is exceeds the set detection level.
Code
Keypad display Name
Range
Unit
Default setting
PRT_25 IH Warn Temp
Inverter overheat
detection
temperature
50–110
°
C
95
PRT_26 IH Warn Band
Inverter overheat
detection range
0–10
°
C
5
