Rockwell Automation PowerFlex 700S, Руководство пользователя, Страница: 76 / 318

3-18 Programming and Parameters
PowerFlex 700S Phase II AC Drive User Manual - Publication 20D-UM006G-EN-P – July 2008
60 DeltaSpeedScale
Multiplier in the Inertia Compensation function - affects the value of Par 59 [Inertia Trq Add].
Use in center winder and unwind applications to compensate for roll diameter build-up.
Default:
Min/Max: 1.0000
-/+1000.0000
✓
RW Real
61 Virt Encoder EPR
Equivalent Edges Per Revolution (EPR) or line count of a virtual encoder. A virtual encoder is
a position reference whose input comes from speed reference. It accumulates pulses at the
same rate as a real encoder of identical Pulses Per Revolution (PPR). Enter the equivalent
PPR. For example, enter 1024 PPR to match an encoder with 1024 EPR.
Units:
Default:
Min/Max: EPR
4096
10/67108864 RW 32-bit
Integer
62 Virt Encdr Posit
A 32 bit pulse accumulator of the virtual encoder. The accumulated pulse count is equivalent
to the hardware accumulator of a real encoder. It accumulates at a rate of 4x the value placed
in
Par 61 [Virt Encoder EPR]. The accumulator starts at zero upon position enable.
Default:
Min/Max: 0
-/+2147483648 RO 32-bit
Integer
63 Virt Encdr Dlyed
One sample period delayed output of Par 62 [Virt Encdr Posit]. Used in some applications to
phase synchronize position reference through SynchLink. The master is delayed one sample
while the downstream drives update their position references – then all drives sample
position simultaneously. The downstream drives do not select a delay.
Default:
Min/Max: 0
-/+2147483648 RO 32-bit
Integer
64 FricComp Spd Ref
Supplies a speed input to the Friction Compensation algorithm. This input is normally a speed
reference from a motion planner or ramped speed reference. It will trigger a torque feed
forward response depending on its value.
Units:
Default:
Min/Max: RPM
0.0000
-/+8.0000 pu
✓
RW Real
65 FricComp Setup
Enter or write a value to configure the friction compensation algorithm. This is a packed word
of 3 digits. Each digit has a possible selection of 10 levels.
•
The least significant digit sets the speed threshold in intervals of 0.0005 pu speed.
•
The next (middle) digit sets the hysteresis band for the “units” digit in intervals of 0.0005 pu
velocity.
•
The most significant digit sets the number of time steps from stick to slip, each step is
0.002 sec.
Example: Value = 524 means: 5 time steps between stick and slip, each of 0.002 sec.
duration, 2 counts of hysteresis or 0.001 pu_speed (each count is 0.0005 pu_speed), and 4
counts or 0.002 pu_speed is the trigger threshold (each count is 0.0005 pu_speed).
Default:
Min/Max: 325
0/999
✓
RW 16-bit
Integer
66 FricComp Stick
The torque needed to break away from zero speed. By nature of friction, the break away
sticktion will always be greater than the running friction.
Units:
Default:
Min/Max: P.U.
0.1500
0.0000/8.0000
✓
RW Real
67 FricComp Slip
The torque level to sustain very low speed – once “break away” has been achieved. By nature
of friction, viscous friction will always be less than sticktion.
Units:
Default:
Min/Max: P.U.
0.1000
0.0000/8.0000
✓
RW Real
68 FricComp Rated
The torque needed to keep the motor running at base speed and with no process loading. The
friction compensation algorithm assumes a linear or viscous component of friction between
Par 67 [FricComp Slip] and Par 68 [FricComp Rated].
Units:
Default:
Min/Max: P.U.
0.2000
0.0000/8.0000
✓
RW Real
69 FricComp Trq Add
The torque reference output of the Friction Compensation function. A value of 1.0 represents
rated torque of the motor.
Units:
Default:
Min/Max:
Scale: P.U.
0.0000
-/+8.0000 pu
Motor P.U. Torque RO Real
71 Filtered SpdFdbk
Displays the motor speed feedback value output from the feedback Lead/Lag filter.
Units:
Default:
Min/Max:
Scale: RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0 pu
RO Real
72 Scaled Spd Fdbk
Displays the product of the speed feedback and Par 73 [Spd Fdbk Scale]. This parameter is
for display only.
Default:
Min/Max:
Scale: 0.0000
-/+2200000000.0000
Par 4 [Motor NP RPM] = 1.0 pu
RO Real
73 Spd Fdbk Scale
A user-adjustable scale factor (multiplier) for speed feedback. It is multiplied with speed
feedback to produce
Par 72 [Scaled Spd Fdbk].
Default:
Min/Max: 1.0000
-/+2200000000.0000
✓
RW Real
74 Atune Spd Ref
Sets the maximum speed of the motor during the Flux current and inertia tests.
Units:
Default:
Min/Max:
Scale: RPM
Par 4 * 0.8500
Par 4 * 0.1000/Par 4 * 1.0000
Par 4 [Motor NP RPM] = 1.0 pu
RW Real
75 Rev Speed Limit
Sets a limit on the speed reference in the negative direction. This value can be entered as a
negative value or zero. The maximum value equals
Par 532 [Maximum Freq] * 0.95.
Units:
Default:
Min/Max:
Scale: RPM
Par 4 * -1.2500
-8.0000/0.0000
Par 4 [Motor NP RPM] = 1.0 pu
RW Real
76 Fwd Speed Limit
Sets a limit on the speed reference in the positive direction. This value can be entered as a
positive value or zero. The maximum value equals
Par 532 [Maximum Freq] * 0.95.
Units:
Default:
Min/Max:
Scale: RPM
Par 4 * 1.2500
0.0000/8.0000
Par 4 [Motor NP RPM] = 1.0 pu
RW Real
No.
Name
Description
Values
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