105
NTT 240/460
Operation mode
Installation and user guide
Rev: 4.0
6.15.6 Position control: electronic cam mode
Operation conditions:
•
control is available with any supported motor type and with any supported feedback, except for sensorless (also
Hall sensor feedback is not recommended).
•
main position reference can be only frequency reference: CHA-CHB and Pulse-Direction
•
control is available for I/O and Modbus operation mode.
•
about regulation, position/speed/current regulators are available.
•
brake motor management is available.
•
trapezoidal ramps are available.
The following image shows an example of I/O setting, then you can set:
•
up to 8 cam tables and up to 576 points per cam with linear or cubic interpolation.
•
axis rate (Numerator e Denominator) and Master and Slave Module pulses for every cam.
•
engage, disengage and phase shift position parameters for slave axis, Homing and JOG parameters.
•
desired I/O configuration and optimal PID regulators for application.
This operating mode allows a control in space of axis related to a space reference acquired from encoder, conditioned
by the values of “Encoder Numerator” and “Encoder Denominator”. This function can be used in application that
require to follow special curves such as Packaging machines, Flying saw, Flying shear, Cut to Lenght and more.
The “Master module” indicates master encoder pulse number used to calculate shape of cam profile. The result of the
division of “Master module” and “Number of table points” gives the space range between two consecutive points of
the table. The profile of the cam between two points is calculated using a cubic interpolation.
The “Slave module” represent the excursion of the cam measured in terms of resolver pulses (the numbers of resolver
pulses in a single revolution of the motor shaft is 65535), Every point of the cam table ( that can range from 0 to
65535) is multiply for the “Slave module” and divided for 65536, in this way every point of the cam table can take an
effective value ranging from 0 and “Slave module ”.
!
In order to obtain a correct operation, please ensure to perform Factors calculation procedure: please see
.
See
“Ch. 5 Wiring and connections” pag. 26
for more details about connectors:
»
J5-6 connector
: for feedback connection, see:
1.
“6.03.2.e Incremental encoder with/without HALL sensors” pag. 57
2.
“6.03.2.g SSI absolute encoder” pag. 58
3.
»
J3 and J7-8-9 connector
:
1. provide the main position reference (pins 1 to 6 of J7). For details about input reference, please see
.
2. for fieldbus operation modes, connect J3 connector and see related fieldbus manuals for information about all
control topology parameters.
3. connect the appropriate input and output signals (please see
).
Содержание NTT 240
Страница 129: ......
