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data: 13/01/16

File: P2XT_smd_ing.doc 

pag 5 di 10

 

Duration of Positioning End Impulse (Cutting Time)  

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Al At the end of the positioning, the positioning end output remains active for a period from 1 to 9999
milliseconds, according to the setting; the Setting 0 value at the end of the positioning output is always on.

 

Clearance Compensation Dimension 

-.

-.

-.

-.

By setting a not zero value you enable the clearance compensation in forward positioning: which means that
the axis goes beyond the positioning dimension by a value equal to the Clearance Compensation Dimension
and it waits as long as the time of motion reversal before moving back to the arrival dimension.

 

Time of Motion Reversal 

/+

/+

/+

/+

In order to avoid excessive stresses in the handling system, it is possible to set a wait time between 0 and
9999 milliseconds for every motion reversal manoeuvre.

 

Shifting Dimension 

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At the positioning end the instrument waits for the changing over of the piece-counter input from 

open

 to

closed

 before shifting forward as much as the Shifting Dimension; then , after a period equal to the Wait

Before Shifting Back, it goes back to the previous dimension (positioning dimension).
Shifting can be disabled by setting up a Shifting Dimension equal to zero.

 

Wait Before Shifting Back 

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After this period there is a return from the shifting dimension (enabled only if Shifting Dimension is set up not
zero value); it can be set up from 0 to 9999 milliseconds.

 

Displayed value for an encoder turn 

 

 

 

 

The instrument can correct counted pulses by multiplying them by a coefficient amounting to the ratio between
the 

 

   

and 

 

 

 

constants; if the two constants are opportunely set it is possible to display the

wished value for a given number of pulses counted on inputs.  The value to be set in this parameter represents
the value to be displayed connected to an encoder turn, that is the multiplier factor of input pulses.
The range of admissible values is 1 

÷

 999999.

 

Number of pulses for encoder turn 

 

 

 

 

The value to be set in this parameter represents the number of pulses for a turn of the encoder that is the
divisor factor of input pulses.
The range of admitted values  is 1 

÷

 999999.

Example:
Let us consider a 100 pulses/turn encoder and for every turn an axis shifting of 123,4567. In order to display
the value of 123,45: set 

 

=12345 and 

 

=100; in order to position the decimal point in the 2

nd

position set 

N

.

DEC

=2.

NOTE

to reduce the error made by truncating the digits after the radix point in the value to be displayed, it is

advisable to multiply 

 

 and 

 

 by 10 or 100 or 1000 in order to consider the maximum number of

significant digits; with the above mentioned values by multiplying everything by 10 it is possible to obtain

 

=123456 and 

 

=1000  by thus obtaining 6 significant digits (instead of 5) for 

 

.

 

Number of decimals 

+%

+%

+%

+%

It arranges the numbers of decimals digit to be visualised, from 0 to 4.

Summary of Contents for P2X T Series

Page 1: ...the inputs Start Emergency Preset Pieces counter all optoisolated To optimize the accuracy of the positioning P2X_T requires entering a few parameters in order to compensate the inertia of the system the clearances and the wear of the mechanical couplings Other features of the instrument are semiautomatic automatic manual absolute relative and line working modes 99 positioning dimensions memory an...

Page 2: ...ING normally open switch that closes at positioning end ANALOG OUTPUT voltage selectable 0 10V or 10 10V and current 4 20mA For switches see the connections scheme at page 10 PROGRAMMING The following keys are used to programme PGM to start and to leave the programming mode of the instrument to change from one constant to another or to increase the digit value during modification or to change from...

Page 3: ...M to enter the programming mode the writing appears on the display Press to select the menu 0 0 0 0 Press RESET ENTER the display show 000 with the first digit flashing this is the password request With the key increase of the flashing digit and selection of the flashing digit set the value 273 and confirm by RESET ENTER N B In the machinery constant exist one constant for remove the dimensions fr...

Page 4: ...onstant of the positioner are the followings Blade Thickness By setting a not zero value all the positioning dimensions were set will be increased with this quantity These constant is used the aplicatios witch expect a cut with material removal PreStop It represents the inertia of positioned axis the positioner disables the start output when the axis reaches a dimension equal to the difference bet...

Page 5: ... enabled only if Shifting Dimension is set up not zero value it can be set up from 0 to 9999 milliseconds Displayed value for an encoder turn The instrument can correct counted pulses by multiplying them by a coefficient amounting to the ratio between the and constants if the two constants are opportunely set it is possible to display the wished value for a given number of pulses counted on inputs...

Page 6: ... maximum speed the positioner produces an acceleration ramp with a time constant that may be set up between 50 to 9999 milliseconds Time constant for deceleration ramp During the positiong reached the Slow value by the passing from the speed Fast to the speed Slow it produces a decelaration ramp with a time constant that may be set up between 50 and 9999 milliseconds Value of the analog output for...

Page 7: ...ed From tenth of mm to thousandths of an inch From tenth of mm to hundredths of an inch From mm to hundredths of an inch From mm to tenths of an inch From cm to hundredths of an inch From dm to inches Sexagesimal degrees with display in degrees and prime numbers Sexagesimal degrees with display in degrees Baud rate for serial output 0 0 0 0 Not used in this version don t change or set to MANUAL WO...

Page 8: ...ENTER on the display 4 dashes are displayed its last right one flashes Each dash represents an output From right to left the dashes are represented as follows START STOP SLOW FAST FORWARD BACKWARD POSITIONING END see next picture The flashing dash indicates the selected output The dash position indicates the output condition an upper lower position means an active inactive idle output Press to sel...

Page 9: ...h is closed as much as the set value of the Duration of Positioning End Impulse constant Before positioning to the next dimension the instrument waits for the changing over from closed to open of the PIECECOUNTER input and the permission from the START input according to working mode procedure semiautomatic or automatic N B if the counterpiece input is not used it is necessary to connect parallell...

Page 10: ...analogic output Current analogic output Scheme of transducers connections max 60mA INPUT JUNCTION BOX 1 2 5 4 3 6 7 8 9 10 11 12 13 12V output B output B GND output A output A TX RS232 per RS485 RX RS232 per RS485 GND RS232 encoder START input PRESET input CONTAPEZZI input EMERGENZA input GND A A B B 12V optional 5 3 6 4 2 1 GND A B 12V A B GND A B Vcc Bidirectional encoder open collector output o...

Page 11: ...ssibility to create working programmes Stores 99 steps of program memory with the possibility of specifying the number of pieces and the number of cycle repeats Data storage with the machine switched off by EEPROM memory Manual Preset Extractable terminal junction box Input output test 3 relays output 120 Vac 0 5A 24Vdc 1A start stop forward backward positioning end 4 inputs ON OFF optoisolated 12...

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