Performance Motion Devices CME N Series, User Manual

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ION/CME N-Series Digital Drive Developer Kit User Manual 53
3
For the N-Series ION, default values and limits for the I
2
t continuous current limit and I
2
t energy limit are designed
to be safe for operation in the drive’s highest output mounting option, namely, using a cold plate for heat sinking. See
Section 3.7, “Mechanical Mounting,” for information on N-Series ION mounting options.
If the N-Series ION drive is being operated at a lower voltage it may be possible to specify values for I
2
t continuous
current limit and I
2
t energy limit that are higher than the default, but lower than or equal to the limit, since the
continuous output current rating of the N-Series ION drive is higher for lower input voltages. See ION/CME N-Series
Digital Drive User Manual for drive output specifications.
For other mounting configurations, or for use with motors that have lower current and energy limits, it may be useful
to set these parameters to values lower than the default values.
I
2
t continuous current limit, step
motor
13.4 A 0.0 A 13.4 A
I
2
t energy limit, Brushless DC
Motor
257.4 A
2
sec 0.0 A
2
sec 257.4 A
2
sec
I
2
t energy limit, DC Brush Motor 280.5 A
2
sec 0.0 A
2
sec 280.5 A
2
sec
I
2
t energy limit, step motor 281.0 A
2
sec 0.0 A
2
sec 281.0 A
2
sec
It is the responsibility of the user to set the I
2
t continuous current and I
2
t energy limit parameters to values that
are safe for the specific N-Series ION mounting configuration and motor setup being used.
Setting Default Setting Low Limit High Limit