Powtran PI8600 F Series User Manual page 74

Section V Parameter Function Table
If this value set is too large, the load feedback energy is small, then inverter can not
compensate for voltage dropping in DC.
If this value set is too small and there is large energy feedback from load, the excessive
energy compensation may cause inverter over-voltage fault.
Set A12 100% to cancel power off frequency dropping function.
A14 Current limit
A15 Limit fall time
Limit deceleration protection
A16
Point
Limit fix-speed protection
A17
point
Current limitation function can effectively restrain over-current caused by motor load
fluctuation in the process of acceleration and deceleration or constant speed operation.
This function will be good effect for V/F control mode.
Under protection of current lost- speed state, the motor speed will drop. so it is not adapted
by system which is not allowed to automatically drop speed.
In operation process, when the motor current surpass value A16 set, motor will decelerate
according to deceleration time A15 set until current below value A16 set.
In operation process, when the motor surpass value A17 set, motor will run with this speed
until current below value A17 set.
Deceleration current limitation is prior of constant speed limitation.
Series
F
G
A18 Output phase lose protection
Grade of phase lose
A19
protection
When ratio of unbalance 3phase output surpass A19 Grade of phase lose protection, the
inverter output phase lose protection i will action, and the system display fault PH-O.
Output frequency less than 2.00Hz, there is N output phase lose protection.
Phase lost protection grade=max current difference between phases, which will be according
to load condition.
A20 Over torque inspected action
N
Y
0.1~3200.0
10~250
10~250
Current limitation%
120
130
150
170
N protection of phase lost
Warning and constant
running
Warning and deceleration
Warning and free stopping
10~100
N torque inspection
Warning and running
Warning and decelerating
stop
72
0
-
1
s
%
%
Corresponding parameter
A17
A16
A17
A16
0
1
-
2
3
%
0
1
-
2
0 Y
10.0 Y
★
Y
★
Y
0 Y
30 Y
0 Y