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NO. Parameter Name Setting Range
Default
f421
Motor electric-thermal protection
retention selection
0~1 0
0: disabled. If the inverter is turned on and off, its motor thermal state memory (used
for overload computation) will be cleared.
1: Enabled. Even if the inverter is turned off, the motor thermal state memory of the
inverter is still retained. If motor overload fault e-22 occurs in the inverter, the motor
can be restarted only after a period of cooling time (computed by the inverter).
NO. Parameter Name Setting Range
Default
f422 AI1 input loss 0~100% 0
0: Disabled. The inverter will not monitor the signal state on the analog input terminal AI1.
1~100: Fault detection level. If signal on AI1 drops below the selected fault detection
level and this low signal level lasts 300 ms or more, fault occurs in the inverter. The
keyboard panel will display fault code e-38.
NO. Parameter Name Setting Range
Default
f423
Activation of the inverter during 4-20mA
signal loss
0~4 0
0: No measures.
1: Coast stop.
2: switch to Fallback speed. To switch to fallback speed f424. The duration is as long as
the fault life time and the running command is still valid.
3: Speed maintaining. To maintain the speed at the time when fault occurs in the
inverter. The duration is as long as the fault life time and the running command is still
valid.
4: Slowdown stop.
NO. Parameter Name Setting Range Default
f424 Fallback speed 0.0 Hz ~f004 0.0
See f423 = 2.
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