Best E5 Series User Manual page 148

Chapter 5 Specification of Parameters
Overvoltage stall
P41.01
protection voltage
This value is a percentage compared to standard DC bus voltage.
P41.02 Undervoltage stall
0: Disabled
1: Enabled
Under momentary voltage drop or momentary power loss, the drive will accordingly drop
output frequency, and compensate the voltage drop via the energy feedback from load, so as
to maintain consecutive running, no trip. This function applies to fans and centrifugal pumps
and such.
P41.03 Overload alarm

Unit's place: detection option
0: Always detect
Overload alarm works all the time during drive running.
1: Detect at constant speed only
Overload pre-alarm only works during constant-speed running of inverter.

Decade: compared object
0: Rated current of motor
Compared object is the rated current relative to motor, and display "oL2" when the alarm is
given under this setting
1: Rated current of drive
Compared object is the rated current of drive, and display "oL1" when the alarm is given
under this setting.

Hundreds place: alarm option
0: Fault reported and continue to run
When drive output current exceeds the level set by P41.04 and the lasting time attains
parameter value of P41.05, the drive will alarm but continue its running.
1: Fault reported and coast to stop
When drive output current exceeds the level set by P41.04 and the lasting time attains
parameter value of P41.05, the drive will display overload fault and coast to stop.
P41.04 Overload alarm threshold
When 0 is set at decade of P41.03, this set value is a percentage compared to rated current of
motor. When 1 is set of that, this set value is a percentage compared to rated current of drive.
Range: 120%~150%
Range: 0~1
Range: 000~111
Range: 20.0%~200.0%
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E5 User Manual
Factory default:
135%
Factory default: 0
Factory default:
000
Factory default:
130.0%