U.009 torque self-tune result, U.012 speed regulator proportional gain – Rockwell Automation GV3000/SE AC Gen. Purpose and Vector Drive Software Start-Up and Ref. Manual User Manual

Page 161

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Programming Reference

4-75

Larger gain values result in faster response, but may result in less stability. If the drive

overshoots the speed reference when changes to the reference are made, or if the

drive is unstable, reduce the value.

With the default value, the drive should perform satisfactorily. However, with increased

inertia loads, this parameter may need to be adjusted.

U.009 Torque Self-Tune Result

This parameter

displays the results of

the self-tuning

operation requested

by parameter U.008.

SF will be displayed

with a fault entry in

the error log showing

the cause(s) of the

fault(s) for any values

of 1 through 7.

Parameter Range:

0 = Self-tuning successful
1 = User initiated a normal stop. Self-tuning aborted.
2 = Emergency stop or fault stop occurred during

self-tuning. Self-tuning aborted.

3 = Motor or encoder direction in reverse. Motor must

rotate in a clockwise direction facing the

motor/tach end. The encoder leads might also be

reversed if the motor direction is correct.

4 = Encoder PPR out of range. The result of the

determination of the encoder PPR was not one

of the four selections of U.001. The encoder

leads might also be reversed.

5 = Magnetizing current percent out of range. The

measured no load current was not within 10% to

80% of rated current. Check to see that nothing

is connected to the shaft and check the value in

U.004.

6 = Bus voltage error. Bus voltage out of range.

Check that the AC input line is +/-10% of U.018.

7 = Current limit exceeded. Self-tuning should be run

with the motor unloaded and without being

connected to any inertia load.

Default Setting:

N/A

Parameter Type:

Read only

Refer also to parameters:

U.001 Encoder PPR

U.008 Torque Self-Tune Enable

U.012 Speed Regulator Proportional Gain

This parameter

selects the

proportional gain of

the PI amplifier in the

speed loop. This

value affects the

dynamic performance

of the speed

regulation of the

motor.

Parameter Range:

0.01 to 99.99

Default Setting:

Power Module-dependent, see Appendix C

Parameter Type:

Tunable

Refer also to parameters:

N/A

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