Inverter Positioning With The Cp1L-El/Em - Omron CP1L-EL20DR-D Operation Manual

Inverter Positioning
CP1L-EL/EM
Frequency
Position
Actual/Settings
Command output
Settings/Actual
Note
318

Inverter Positioning with the CP1L-EL/EM

With the CP1L-EL/EM's inverter positioning function, feedback is constantly
read for the positioning data while controlling the position.
Speed command
Position feedback
There is no positioning error because the present position and position error
are constantly monitored and corrected.
(1) The CP1L-EL/EM's inverter positioning function is designed to increase
positioning speed and stopping precision by reading position information
and using a feedback loop with an error counter to switch speeds. It does
not increase the response, stopping precision, or speed change rate of
the inverter and motor. These are characteristics of the inverter and mo-
tor. Refer to user documentation on your inverter and motor for details.
(2) The corresponding pulse output number (0 or 1) cannot be used for the
PULSE WITH VARIABLE DUTY FACTOR instruction (PWM) if inverter
positioning 0 or 1 is used. The high-speed counter of the same number
(0 or 1) is used to input the feedback pulse.
Power
supply
frequency
Inverter
Feedback pulses
Low-speed operation is not required to prevent
positioning error. Control is simplified because the
low-speed position does not need to be calculated.
Time
Time
Positioning is faster because low-speed
operation is not used.
Section 7-3
Inductive motor
Encoder