Parker HPD2N, Руководство пользователя, Страница: 76 / 125

Parker Hannifin S.p.A. - S.B.C. Division HPD N User’s Manual
73
Example 11: 5 positioning with teach-in
(FILE: E003.HPD)
To obtain the following functionality: with reference to the figure, assume you need to
acquire 5 different machine positions and then execute them automatically.
This can be achieved using a smart keypad module (see appendix L, SBC1 program)
connected on the serial communications line with the drive and with the internal PLC. When
the machine is powered up the drive will stand by to receive the homing exec command and
the keypad will show the message “axis zero (F4)”. By pressing [F4] or sending a pulse
command to digital input 2 of the drive, the motor shaft will turn at the speed established by
parameter Pr5 until the intervention of the proximity sensor at digital input 3. The keypad
display will now present the message “automatic dimension 1”; digital inputs 4, 5 and 6 select
the position to be reached, while a pulse supplied to digital input 1 provides a trapezoidal
profile to reach the selected position. The following table shows the relationship between
parameters Pr80...Pr89 and the encoding of the 3 digital inputs; for example, input 4 on one
selects position 1 and the distance in steps between the zero axis point and position 1 is set in
Pr81:80, bearing in mind that one revolution of the motor shaft is equivalent to 4096 steps.
M
MOTOR
PROX SENSOR
CARRIAGE
0 1 2 3 4 5 POSITIONS: