S.B.C. Elettronica S.p.A. - Engineering Division
HPDxxN – High Power User’s Manual
66
Example 12: 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.
If you want to set the dimension from the keypad, press [F3] and the display will show the
message “dimension xx yyyy“ where xx defines the dimension in question and yyyy determines the
relative value. The [+] and [-] keys are used to modify the value yyyy while [F3] changes the value
xx.
If you wish to acquire the required position by moving the carriage, press [F1]: the display will
show the message “manual dimension xx “; [F1] selects the xx dimension to be programmed while
M
MOTOR
PROX SENSOR
CARRIAGE
0
1
2
3
4
5
POSITIONS:
Input 6
Input 5
Input 4
position
dimension
0
0
1
1
Pr81:80
0
1
0
2
Pr83:82
0
1
1
3
Pr85:84
1
0
0
4
Pr87:86
1
0
1
5
Pr89:88
other combinations
0
axis zero
