TECHTOP TD20 Series - Page 78

TD20 Series VFD Function Parameters
-76-
Function
code
Name
Detailed instruction of parameters
Default
value
Modify
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.
P11.03
Overvoltage
stall protection
0: Disabled
1: Enabled
Output
current
Overvoltage
small point
Output
frequency
Time
Time
1
○
P11.04
Overvoltage
stall voltage
protection
120–150% (standard bus voltage) (460V)
120%
○
120–150% (standard bus voltage) (220V)
115%
P11.05
Current limit
action
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 frequency
Output current
Limit point
Set frequency
ACC
Time
Time
Constant
speed
Setting range of P11.05:
0x01
◎
P11.06
Automatic
current limit
level
160.0%
◎
P11.07
The
decreasing
ratio during
current limit
10.00
Hz/s
◎