Copley Controls Corp. Xenus XTL, User Manual

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Quick Setup with CME 2 Xenus XTL User Guide
116 Copley Controls Corp.
5.9: Current Loop
Initial current loop proportional gain ( Cp ) and current loop integral gain ( Ci ) values were calculated in
a previous step . For an introductory overview of the control loops, see
Operating Modes (p. 17) .
NOTE: For Copley Controls digital amplifiers, the current loop gain is independent of the power supply
voltage.
5.9.1: Current Loop Settings
For more information, see Current Mode and Current Loop (p. 18) .
5.9.1.1
Click I Loop to open the Current Loop screen:
5.9.1.2
Change/verify Current Loop parameters as needed.
Parameter Description
Peak Current Limit Used to limit the peak phase current to the motor. Max value depends upon the amplifier
model; Min value > continuous limit.
I
2
T Time Limit Sets I
2
T Time Limit in mS. See I
2
T Time Limit Algorithm (p. 153) .
Continuous Current Limit Used to limit the Phase Current. Max Value is < Peak Current and depends upon the
amplifier model. Min value: 0
Current Loop Offset Sets current loop offset. Leave it set to zero until after tuning. For more information, see
Offset (p. 18) .
Cp Current loop proportional gain. Range 0 – 32,767.
Ci Current loop integral gain. Range 0 – 32,767.
Drive Output
Maximize Smoothness: Amplifier uses circular vector limiting to produce smooth
operation even into the voltage limits.
Maximize Speed: Allows for slightly more of the bus voltage to be used when in the
voltage limit. This may produce a small disturbance at top speed.
Auto Tune See Auto Tune the Current Loop (p. 117) .
Bandwidth Measure bandwidth using the Cp and Ci values now in the amplifier.