3 standard motor table values – Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set User Manual

Page 158

Advertising
background image

Servo Parameters

Chapter 7

7-12

Function

This parameter is only used for Allen--Bradley 8500 or 1394 digital

systems. Analog system users (including the 1394 drive with analog

interface) ignore this parameter. Use this parameter to get a starting point

for configuring and tuning 1326 and 8500 Series digital servo motors.

The control has internal tables that contain data for each of the standard

motors. Whenever the control is powered-up, these tables are read to

obtain certain values for the standard motors configured in AMP.

This parameter determines whether or not all of the values for the standard

motors configured in AMP are read on power-up.

If this parameter is set to “Yes,” and you are using one of the motors listed

in Table 7.B through Table 7.E (pages 7-71 and 7-73), then all motor

parameters are read from the internal tables at power-up .

If this parameter is set to “No,” then the parameters Motor Rated

Current, Velocity Proportional Gain, and Velocity Integral Gain are not

read from the internal tables. Instead, the last value entered for these

parameters (through either ODS AMP or Patch AMP) prior to turning

power off is the active value after power is turned on. Setting this

parameter to “No” allows for fine tuning of these key motor parameters for

a standard motor. For a procedure on fine tuning a motor, refer to

Appendix A of this manual.

Important: This parameter is intended to be used with standard motors only

at power up. Once you have powered up your system and confirmed wiring,

fine tuning of the servo gains is almost always required once the servo shaft is

coupled to a load. Using online AMP to adjust the velocity/position loop

gains will automatically reset this parameter to No at the control. Once you

finish tuning your servos we recommend uploading the AMP from the control

to store the new gain values and set this parameter to “No”.

Axis

Parameter

Number

All

[11]

Range

Selection

Result

(a)

Yes

(b)

No

7.1.3

Standard Motor Table

Values

Advertising