SSD 605C, Руководство по эксплуатации продукта

Страница: 85 / 236

Programming Your Application
6-19
605C Frequency Inverter
Functional Description
The current feedback function block processes motor
line current measurements and provides diagnostics of
line current magnitude, torque producing current and
magnetic field producing current components. The line
current magnitude (the motor current measured using a
current meter) can be considered to be the vector sum of
the field and torque producing current components.
The function block requires appropriate values for full-
load and no-load motor currents to be entered. Once
done, the function block will provide measurements of:-
rms line current:
I MAGNITUDE (MOTOR CURRENT)
rms field current component:
I MAGNETISING
torque current component:
I TORQUE .
These diagnostics are presented in Amps, and as a percentage of the user set motor full-load
current.
In addition, the field current component is re-scaled to provide a FIELD diagnostic. A value of
100.0% in the field diagnostic indicates that the motor is operating at rated flux. The torque
current component is re-scaled to provide a LOAD diagnostic. A value of 100.0% in the load
diagnostic indicates that the motor is operating at rated torque or full load.
I TORQUE Range: xxx.xh % (h)
This diagnostic contains the level of torque producing rms line current component being drawn
from the Inverter and is seen as a % of the FULL LOAD CALIB setting.
I TORQUE Range:xxxx.x A
This diagnostic contains the level of torque producing rms line current component being drawn
from the Inverter.
LOAD Range: xxx.xh % (h)
This diagnostic is a normalised version of the I TORQUE diagnostic. A value of 100%
indicates the motor is operating at rated load (torque).
FIELD Range: xxx.xh % (h)
This diagnostic is a normalised version of the I MAGNESTISING diagnostic. A value of 100%
indicates the motor is operating at rated magnetic flux (field).
I TORQUE
I MAGNETISING
MOTOR CURRENT