TECHTOP TD20 Series Product Manual page 78

TD20 Series VFD
Function
Name
code
Overvoltage
P11.03
stall protection
Overvoltage
P11.04 stall voltage
protection
Current limit
P11.05
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 VFD 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 VFD trips.
During the running of the VFD, this function will detect
the output current and compare it with the limit level
defined in P11.06. If it exceeds the level, the VFD will
run at stable frequency in ACC running, or the VFD 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 VFD will
accelerate to run.
Output current
Limit point
Output frequency
Set frequency
Setting range of P11.05:
Constant
ACC
speed
-76-
Function Parameters
Default
value
1
Time
Time
120%
115%
0x01
160.0%
10.00
Hz/s
Time
Time
Modify
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