
Control Loops CME 2 User Guide
112 Copley Controls
11.1: Current Loop Setup and Tuning
Initial current loop proportional gain (Cp) and current loop integral gain (Ci) values can be
calculated with The Calculate Function (p. 54).
Enter basic Current Loop settings
Click I Loop to open the Current Loop screen:
Change/verify Current Loop parameters as needed.
Used to limit the peak phase current to the motor. Max value depends upon the
amplifier model; Min value > continuous limit.
Sets I
2
T Time Limit in ms. See I2T Time Limit Algorithm (p. 191).
Used to limit the Phase Current. Max Value is < Peak Current and depends upon
the amplifier model. Min value: 0
Sets current loop offset. Leave it set to zero until after tuning. For more
information, see Offset (p. 118).
Current loop proportional gain. Range 0 – 32,767.
Current loop integral gain. Range 0 – 32,767.
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.
See Current Loop Auto Tune (p. 115).
Measure bandwidth using the Cp and Ci values now in the amplifier.
Click Close to close screen and save changes to amplifier RAM.
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