5. Parameters
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5.8.2 Momentary power failure
5.8.2.1 Operation at power loss : P1.01
Parameter
No.
Name
Unit
Setting
range
Factory
Setting
Changeable
during
operation
P1.01
Operation at
Power Loss
- 0~2 1
X
• P1.01 can be used to set the operation when the power is supplied after
the momentary power failure.
• Setting
Setting
constant
Function
0
Stops with the error display.
1
Restarts if power is restored within the compensation time of
power loss (P1.02).
2
Restarts if power is restored as long as the bus voltage is high
enough to maintain logic.
• When setting 2 is chosen, speed search will be performed automatically
if the power is restored within the allowed time interval.
• When setting 0 is chosen, an under voltage fault will be detected if
power is interrupted for more than 15ms.
5.8.2.2 Compensation time of power loss : P1.02
Parameter
No.
Name
Unit
Setting
range
Factory
Setting
Changeable
during
operation
P1.02
Compensation
Time of Power
Loss
0.1sec 0.0~2.0
0.5
X
• P1.02 can be used to set the time of recovery after the power loss
• The factory setting depends on the inverter capacity.
• P1.02 is valid only when P1.01 is set to 1.
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MOSCON-E7 User’s Manual
5.8.2.3 V/f recovery time : P1.03
Parameter
No.
Name
Unit
Setting
range
Factory
Setting
Changeable
during
operation
P1.03
V/f Recovery
Time
0.1sec
0.0
~2.0
0.5
X
• P1.03 can be used to set the V/f recovery time until reaching the
maximum output voltage after the blocking of output.
i.e. -For 200V class inverter: Time for voltage to be restored
from 0 VAC to 200VAC.
- For 400V class inverter: Time for voltage to be restored
form 0 VAC to 400VAC.
• P1.03 is valid for speed searched after:
- momentary power loss
- regular speed searches
- voltage changes with energy-saving control
- voltage changes with baseblock clearing.
5.8.2.4 : Undervoltage level : P1.04
Parameter
No.
Name
Unit
Setting
range
Factory
Setting
Changeable
during
operation
P1.04
Undervoltage
Level
1V 0~250
190
X
• P1.04 can be used to when adding an AC reactor and lower the main
circuit undervoltage detection level.
• Set a main circuit DC voltage value that will detect a main circuit
undervoltage.
• Normally it isn’t necessary to change P1.04.
