Fagor DDS Series Hardware Manual page 145

Definition of currents
On axes
 I N "Continuous duty cycle" current.

 Ip Peak current, Imax.

See load duty cycles.
On spindles
 I "Continuous duty cycle" current.
N

 I Current that, in an intermittent duty cycle S6 with 10 minute
S6-40%

cycle, circulates for 4 minutes with load (the other 6 minutes operates
without load); in other words with magnetizing current = 0.7 x rated
current I N ).
See load duty cycles.
 I Current that, in an intermittent duty cycle S3 with 10 second
S3-5% 
cycle, it works at constant current I
works at rated current for 9.5 second.
See load duty cycles.
NOTE. The values of these currents are given in RMS.
S3-5% (2xI N ) for 0.5 second and it
  Drives
3.
DDS
HARDWARE
Ref.1912
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