STEP ET Series - Page 141

Chapter 7 Parameter Explanation
ET/EP/EH Series Intelligent Flexible Driver Manual
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Function code
Name
Setting range
Factory setting
P71.30
Vector control compensation
0~65535
132
P71.31
Inertia compensation coefficient
(%)
0.0~6553.5
0
P71.32
Inertia compensation filtering
time (ms)
0~1000
5
The above parameters are used to compensate for the acceleration and deceleration performance of
large inertia systems.
Function code
Name
Setting range
Factory setting
P71.33
UPDOWN compensation
0.00~20.00
1.0
Used with UPDOWN terminal function enabled.
Function code
Name
Setting range
Factory setting
P71.40
Input shaping type
0~2
0
P71.41
Oscillation frequency
0.00~600.00
0.3
P71.42
Damping coefficient
0~2.00
0.05
P71.40 - P71.42 are anti-swing control algorithm parameters, mainly applied to occasions where anti
swing is required, such as stackers, etc.
Function code
Name
Setting range
Factory setting
P71.45
Output shutdown delay
0.00~655.35
0.03
After brake holding, PWM output delay is closed.
Function code
Name
Setting range
Factory setting
P71.49
Power failure detection threshold
(V)
380~550
420
P71.50
KEB bus target voltage (V)
380~550
480
P71.49 is generally set to 420. If the KEB process reports a fault, increase the value appropriately
with reference to the bus voltage of the inverter.
The value of P71.50 should be greater than that of P71.49 (power failure detection threshold) and
lower than the inverter bus voltage during normal power supply. This value can be appropriately
increased with reference to the inverter bus voltage.
Function code
Name
Setting range
Factory setting
P71.51
KEB proportion Kp
0~10000
100
P71.52
KEB integral Ki
0~10000
100
P71.53
KEB deceleration upper limit
0.00~100.00
0.50
P71.54
KEB acceleration upper limit
0.00~100.00
10.00
P71.55
KEB deceleration initial limit
0.00~100.00
2.00
The above parameters should be set according to the factory default values, and generally do not
need to be changed.
For the Kp in the KEB process, if this value is too small, the KEB time will be too short; if it is too
large, it will lead to overvoltage fault of the bus.
For the Ki in the KEB process, if this value is too small, the KEB time will be too short; if it is too
large, it will lead to overvoltage fault of the bus.