Xinje VB5N Series User Manual

VB5N series inverter
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Note: When one inverter run with multi-motors, inverter’s thermal relay protection will be disabled. Therefore, please install
thermal relay in the input wire of each motor to protect motor more efficiently.
P5.02
Over-voltage speed loss selection
Range: 0, 1
1
P5.03
Speed loss overvoltage point
Range: 380V: 120~150 (%)
220V: 110~130 (%)
140(%)
120(%)
0: disable
1: enable
During deceleration, the motor’s decelerate rate may be lower than that of inverter’s output frequency due to the load iner-
tia. At this time, the motor will feedback the energy to the inverter, it will cause the inverter DC bus voltage too high. If no
measures are taken, the inverter will be overvoltage protected.
During the deceleration, the inverter detects the bus voltage and compares it with the speed loss over voltage point defined
by P5.03. If the bus voltage exceeds the speed loss overvoltage point, the inverter output frequency will not decrease.
When the bus voltage is lower than the point again, it continues to decelerate run, as shown in Fig.4-31.
Fig. 4-31 Overvoltage speed loss function
P5.04
Auto current limiting level
Range: 110~200(%)
150(%)
P5.05
Frequeny decrease rate when current limiting
Range: 0.00~99.99Hz/s
10.00Hz/s
P5.06
Auto current limiting selection
Range: 0, 1
1
Auto current limiting function is used to limit the load current smaller than the value defined in P5.04. Therefore the in-
verter will not trip due to surge over-current. This function is especially useful for the applications with big load inertia or
big change of load.
Auto current limiting level (P5.04) defines the threshold of auto current limiting.The range is the percentage of the inverter
rated current.
Frequency decrease rate when current limiting (P5.05) defines the rate of output frequency when the inverter is in auto
current limiting status.
If the decrease rate is too small, auto current limiting status may not change and overload fault may occur. If it is set too
big, the frequency will change too sharply and thus the inverter may be in generating status for long time, which may result
in overvoltage protection.
Auto current limiting functions is always enabled in accerlate or decelerate process. P5.06 (auto current limiting) will de-
cide if the auto current limiting function is enabled when constant speed running.
P5.06＝0, Auto current limiting function is disabled when constant speed running;
Output frequency
Time
Time
Speed-loss
overvoltage point

Xinje VB5N Series Specifications

General

Brand	Xinje
Model	VB5N Series
Category	Inverter
Language	English