
Position control for Servo unit P3S_I
Data: 13/01/16 Codice: P3S_I Rev 1.0 page 6/14
WORKING MODE
The P3SI can work in 3 different modes.
Automatic mode
This mode is that in which the instrument usually is after turning on.
If there is only one servomotor on the display appears the current value of axis, while there are more
servomotors appear .%1
.%1.%1
.%1.
With parameter /,%
/,%/,%
/,% (see chapter “ System Register) set at 1 or 2 (it means when all the axes reach the
value at the same moment), the auxiliary display shows the program number in execution, otherwise shows
the number of selected axis. With one axis on the auxiliary display appears always the selected program.
The instrument wait for the start control (from keyboard or terminal board) to carry out the selected program.
During carrying out of positioning, if there is one axis, on the main display appears the value and in case of
more axes shows the message “your system is running please wait” . At the end of positioning, if all the
axes are in the correct position, switches on the relay END POSITIONING, otherwise start the relay ERROR.
Single mode
Pressing key Pfollowed by 2is possible position a single axis to a given value.
If there is only one servomotor skip to the next paragraph.
If there are more axes it is necessary to choose which axis has to move: on the auxiliary display appears the
blinking number of selected axis; choose that required (with keys + and – or with Cand the numeric
keyboard) and confirm with E.
Now on the display appears a 0 blinking, digit the value to reach and press key E. In this moment the axis
starts to move until reaching the set value. Once that the axis reached the value switches on the end
positioning relay and starts to blink the auxiliary display indicating that the device is waiting for a new control.
Press Eto put in another value or Pto esc of the single positioning mode, or choose another axis (in case of
more servomotors linked to the device). In this working mode, with only one axis, on the auxiliary display
appears SI. At the end of positioning, if the axis is in the correct position, switches on relay END POSITIONING,
otherwise start the relay ERROR.
Manual mode
Pressing key Pfollowed by 1is it possible to move by hand a single axis.
If there is more then 1 axis is it necessary to choose the one that has to be moved (with keys + and – or with
Cand the numeric keyboard see chapter “Choice of working axis”).
Press key >> to move the axis forward fast.
Press key > to move the axis forward slow.
Press key << to move the axis backward fast.
Press key << to move the axis backward slow.
Loosing the key the axis stops.
Pressing on key P, if there is only one axis, goes out of manual mode, otherwise with more axes starts to
blink the last digit of auxiliary display indicating the to make another handling in manual mode it is necessary
to choose another axis.
To esc press Pfor a second time.
N.B.: when there is only one axis, during this working mode, on the auxiliary display appears MA.
POSITIONING PROGRAMS
A positioning program is a series of values in which, to each value corresponds an axis. It is possible to store
up to 99 programs.
Example: supposing to have 2 axes and that program n°1 is as follows: Value1=212,0. Value2=600,0.
By choosing program n°1, after start control, axis 1 will position at 212,0 and axis 2 at 600,0.
Writing of positioning programs
On main display press Pfollowed by 5, will be requested password 273 (see chapter “Choice of working
axis”). Now on the display appears PRG01 to indicate that the selected program is the number 1. Using keys
+ and -, increases or decreases the number of program. This way, by each step, the first 3 digits of main
display show PRG while the last two indicate the number of program. Once reached the wished program
number, press E. On the main display appears the value of the first value of choose program while on the
auxiliary display appears 01 that indicates to which axis corresponds the showed value.
With keys + and – is possible to run all the values of program.
At any moment, the number showed on the auxiliary display indicates to which axis correspond the value
showed. To modify a value, press key C, on the main display appears a blinking “0”, digit the value that has to
be stored and press E. The value will be saved then is possible to go to the next value. Repeat this
proceeding for all the values that has to be changed.