D-73
Programming
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 17: ...2 5 Product Overview AC890PX AC Drive 890PX bottom wire entry ...
Page 144: ...The Keypad 7 9 AC890PX AC Drive The Menu System Map ...
Page 145: ...7 10 The Keypad AC890PX AC Drive The Menu System Map continued ...
Page 328: ...Programming D 88 AC890PX AC Drive Functional Description ...
Page 386: ...Programming D 146 AC890PX AC Drive Setpoint Drive Frequency Frequency 1 Frequency 2 ...