Rockwell Automation 20A PowerFlex 70EC/700VC - Manual (Page 121)

Appendix
Supplemental Information
Engineering
Parameters
The following parameters can only be viewed when “2, Reserved” is selected in
parameter 196, [Param Access Lvl].
70EC 700VC 700H
✔ ✔
!
ATTENTION: To guard against unstable or unpredictable operation,
the following parameters must only be changed by qualified service
personnel.
Fi
le
Gr
ou
p
No. Parameter Name & Description Values PF 70 PF 700 PF700
H
UTILIT
Y
Dia
g
-Motor
Cn
tl
500 [KI Current Limit]
Current Limit Integral gain. This gain is applied to the
current limit error signal to eliminate steady state
current limit error. A larger value increases overshoot
during a step of motor current/load.
Default:
Min/Max:
Units:
1500
0/10000
1
✔ ✔
501 [KD Current Limit]
Current Limit Derivative gain. This gain is applied to
the sensed motor current to anticipate a current limit
condition. A larger value reduces overshoot of the
current relative to the current limit value.
Default:
Min/Max:
Units:
500
0/10000
1
✔ ✔
502 [Bus Reg ACR Kp]
This proportional gain, in conjunction with parameter
60, adjusts the output frequency of the drive during a
bus limit or inertia ride through condition. The output
frequency is adjusted in response to an error in the
active, or torque producing, current to maintain the
active bus limit, or inertia ride through bus reference.
A larger value of gain reduces the dynamic error of
the active current.
Default:
Min/Max:
Units:
450
0/10000
1
✔ ✔
503 [Jerk]
Allows you to adjust the amount of S-Curve, or “Jerk”
applied to the Acc/Dec rate. To enable the Jerk
feature, bit 1 of parameter 56 must be set high.
Default:
Min/Max:
Units:
900
2/30000
1
✔ ✔
504 [Kp LL Bus Reg]
This proportional gain adjusts the active current
command during an inertia-ride through condition, in
response to a bus error. A larger value of gain
reduces the dynamic error of the bus voltage as
compared to the bus voltage reference.
Default:
Min/Max:
Units:
500
0/10000
1
✔ ✔
505 [Kd LL Bus Reg]
Line Loss Bus Reg Kd is a derivative gain, which is
applied to the sensed bus voltage to anticipate
dynamic changes and minimize them. A larger value
reduces overshoot of the bus voltage relative to the
inertia-ride through bus voltage reference.
Default:
Min/Max:
Units:
500
0/10000
1
✔ ✔
506 [Angl Stblty Gain]
Angle Stability Gain adjusts the electrical angle to
maintain stable motor operation. An increase in the
value increases the angle adjustment.
Default:
Min/Max:
Units:
51
0/32767
1
✔ ✔
507 [Volt Stblty Gain]
Adjusts the output voltage to maintain stable motor
operation. An increase in the value increases the
output voltage adjustment.
Default:
Min/Max:
Units:
93
0/32767
1
✔ ✔