Rockwell Automation 1756-DMF30 ControlLogix Drive Module User Manual
Page 110
Publication 1756-UM522B-EN-P - February 2003
B-30 1756-DMD30 Specific Information
58
InertiaDecelGain
Sets the deceleration gain for the Inertia Compensation
function. A value of 1 produces 100% compensation.
Default:
Min:
Max:
Type:
File:
Group:
0
0
2
Linkable, Read-Write, Floating Point
Speed Control
Reference
59
Inertia Torq Add
The torque reference output generated by the inertia
compensator. This torque level is modified by parameter 57
[InertiaAccelGain] and parameter 58 [InertiaDecelGain]. A
value of 1.0 represents rated torque of the motor.
Units:
Default:
Min:
Max:
Type:
File:
Group:
P.U.
0
-8
8
Non-Linkable, Read Only, Floating Point
Speed Control, Torque Control
Reference, Torque
61
Virt Encoder PPR
Equivalent Pulses Per Revolution 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 PPR. The virtual
encoder PPR is internally multiplied by 4 so that total
accumulated pulses per revolution is 4x the specified PPR.
Units:
Default:
Min:
Max:
Type:
File:
Group:
PPR
4096
10
65535
Non-Linkable, Read-Write, 16-bit Integer
Speed Control
Reference
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 in parameter 61 [Virt Encoder PPR]. The accumulator
starts at zero upon position enable.
Default:
Min:
Max:
Type:
File:
Group:
0
-2147483648
2147483648
Non-Linkable, Read Only, 32-bit Integer
Speed Control
Reference
63
Virt Encdr Dlyed
One sample period delayed output of parameter 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:
Type:
File:
Group:
0
-2147483648
2147483648
Non-Linkable, Read Only, 32-bit Integer
Speed Control
Reference
70
MtrSpd Sim Posit
The motor position output of the motor simulator. The motor
simulator provides motor position information during setup
and troubleshooting when actual motor control is not desired
or possible. To use the motor simulator, enter a value of 4 in
parameter 222 [Motor Fdbk Sel].
Default:
Min:
Max:
Type:
File:
Group:
0
-2147483648
2147483648
Non-Linkable, Read Only, 32-bit Integer
Speed/Posit Fdbk
Calculated Fdbk
71
Filtered SpdFdbk
Displays the motor speed feedback value output from the
feedback Lead/Lag filter. A value of 1.0 represents base speed
of the motor. A value of 1.0 represents base speed of the
motor.
Units:
Default:
Min:
Max:
Type:
File:
Group:
RPM
0
-14000
14000
Non-Linkable, Read Only, Floating Point
Speed Control
Regulator
No.
Name
Description
Values