A p p e n d i x D : P r o g r a m m i n g
D-69
AC890PX AC Drive
MOT PMAC PROTECT
SETUP::MOTOR CONTROL::MOT PMAC PROTECT
Designed for PMAC Control Mode.
This is a motor protection based on the rms current flowing in the motor phases. This protection is called I2T and is based on
the permanent current and thermal time constant.
The 100% permanent current is the following curve extracted from parameters in MOTOR PMAC 1 and 2 function block:
The rms motor current is filtered with a first order low pass filter based on the THERMAL TIME CST. The output I2T
MOTOR LOAD of this filter is a percentage of the motor thermal load. When this output exceeds 100%, the drive trips in I2T
MOTOR TRIP. The level of motor load (I2T MOTOR LOAD) is given as a percentage (100% represents a current equal to
the PERM CURRRENT flowing in the motor phases for a THERMAL TIME CST time).
Summary of Contents for AC890PX Series
Page 8: ......
Page 12: ...1 4 C h a p t e r 1 G e t t i n g S t a r t e d AC890PX AC Drive...
Page 17: ...C h a p t e r 2 P r o d u c t O v e r v i e w 2 5 AC890PX AC Drive 890PX bottom wire entry...
Page 22: ...2 10 C h a p t e r 2 P r o d u c t O v e r v i e w AC890PX AC Drive...
Page 74: ...4 8 C h a p t e r 4 A s s o c i a t e d E q u i p m e n t AC890PX AC Drive...
Page 96: ...5 22 C h a p t e r 5 O p e r a t i n g t h e D r i v e AC890PX AC Drive...
Page 162: ...8 22 C h a p t e r 8 T r i p s F a u l t F i n d i n g AC890PX AC Drive...
Page 170: ...9 8 C h a p t e r 9 R o u t i n e M a i n t e n a n c e R e p a i r AC890PX AC Drive...
Page 286: ...D 84 A p p e n d i x D P r o g r a m m i n g AC890PX AC Drive Functional Description...
