Unitronics UMI-B1 UL Series Operation Manual page 90

UMI-B1 UL Series Inverter
Function
Name
code
Overvoltag
P11.03 e stall
protection
Overvoltag
e stall
P11.04
voltage
protection
Current
P11.05
limit action
Automatic
P11.06 current
limit level
The
decreasing
P11.07 ratio during
current
limit
Detailed instruction of parameters
point at sudden power
loss
Note: 1. Adjust the parameter properly to
avoid the stopping caused by inverter
protection during the switching of the grid.
2. Prohibit the input phase protection to
enable this function.
0: Disabled
1: Enabled
Output
current
Overvoltage
small point
Output
frequency
120–150% (standard bus voltage)
(460V)
120–150% (standard bus voltage)
(220V)
The actual increasing ratio is less than the
ratio of output frequency because of the big
load during ACC running. It is necessary to
take measures to avoid overcurrent fault and
the inverter trips.
During the running of the inverter, this
function will detect the output current and
compare it with the limit level defined in
P11.06. If it exceeds the level, the inverter will
run at stable frequency in ACC running, or the
inverter will derate to run during the constant
running. If it exceeds the level continuously,
the output frequency will keep on decreasing
to the lower limit. If the output current is
detected to be lower than the limit level, the
inverter will accelerate to run.
Time
Time
88
Function parameters
Default
Modify
value
○
1
120%
○
115%
◎
0x01
◎
160.0%
10.00
◎
Hz/s