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Machine top view :

To align the bridge with the sensor bar, the homing sensor (or zero sensor) must be aligned with the first sheet detection sensor.

possible to align the homing sensor and the first sensor of the bar, enter the distance between the two sensors in parameter PB12.

= gantry enable/disable button.
= gantry disabled
= gantry enabled

Procedure
1	By pressing the “ - ” button, the instrument delivers -1 Volt.
2	By pressing the “ + ” button, the instrument delivers +1 Volt.
3	Press the “ - ” button to move the bridge axis towards one end (without actuating the limit switch).
4	Make a mark on the moving part, correspondingly make a mark on the fixed part.
5	Zero the ENCODER value using the button.
6	With the “ +” button, move the axis towards the opposite end (without actuating the limit switch).
7	Measure the distance between the mark on the fixed part and the mark on the moving part with a tape measure.
8	Enter the measurement in the “ MEASURE” field.
9	Copy the number from the “ ENCODER” field to the “ PULSE” field.

Important: parameters must be adjusted: inverter / brushless driver / servo valve
to eliminate ramps (ramps will be managed by the instrument)

To align the gantry with the sensor bar, the homing sensor (or zero sensor) on the gantry must be aligned with the first sensor on the sheet detection bar.

= enable/disable gantry button.
= gantry disabled
= gantry enabled

Procedure
1	Press the “ - ” button, the tool delivers -1 Volt
2	Press the “ + ” button, the tool delivers +1 Volt
3	Press the “ - ” button, move the gantry axis towards one end (do not activate the limit switch)
4	Make a mark on the moving part, and correspondingly, make a mark on the fixed part
5	Zero the ENCODER value with the button
6	Using the “ +” button, move the axis towards the opposite end (do not activate the limit switch)
7	Measure the distance between the mark on the fixed part and the mark on the moving part
8	Enter the measurement in the “MEASURE” field

Important: You will need to adjust the parameters of the inverter/Driver Brushless/servo valve
to eliminate the ramps (the ramps will be managed by the tool).

Attention: If the automatic offset voltage calculation procedure (step 9) fails,
perform the following manual procedure:
Determine :

with which positive voltage value the gantry moves forward with which negative voltage value the gantry moves backward
Then, set the voltage offset halfway between these two values
Example :

Perform the following activities repeatedly, calmly, with the following goals:

highest possible speed shortest possible acceleration ramps low tracking error Procedure:

Repeat steps 1 to 7 until the axis vibrates. When the axis vibrates, set PROP.GAIN TMP to -10%

Note: Acceleration/deceleration with “S” ramps (parameter “PG 34”) reduce the number of back-and-forth cycles but contribute to a smoother gantry motion.

Tracking Error Setting:

With the gantry in motion, lower the tracking error value (following error) from 9999 to 100. Gradually reduce it from 100 towards 0000. Once you find the value that triggers the alarm, add 15%. Caution: The MAX and min tracking errors must be less than 30.

The “RESET FOLL.ERR” button allows you to recalculate the maximum and minimum following error.
Press it each time you change the parameters for dynamic calibration.

Position the sensors or limit switches in such a way that the center of the carriage's travel corresponds to the center of the sensors (see main image).

Set the number of sensors (parameter PS01) on the SENSORI page and the type of limit switch (parameter PS02).

Configure the tolerance values in parameters PS03 and PS04. ERROR TOLERANCE: FALSE POSITIVES: Indicates the number of steps or scans required in the event of a severe error (sensor reads 1 instead of 0) before an alarm is triggered. A tolerance value of zero is special and indicates that no error search is performed, so with a value of 0, there will never be an alarm. ERROR TOLERANCE: FALSE NEGATIVES: Indicates the number of steps or scans required in the event of a resolvable error (sensor reads 0 instead of 1) before a warning is triggered. A tolerance value of zero is special and indicates that no error search is performed, so with a value of 0, there will never be a warning.

Set parameter PG05: Orthogonal Step (distance between limit switches) and parameter PG06: Horizontal Step (space determined by the encoder) on the generic SETUP page. To determine parameter PG05: Orthogonal Step, measure from the first sensor to the last one and divide the measurement by the number of sensors. Usually, PG05 = PG06.

Representation of the plate detection process
	1	Plate
	2	Limit Switches / Sensors
	3	Space determined by the encoder (PG06)
	4	Distance between limit switches (PG05)

Check the functionality of the plate detection limit switches on DIAGNOSTIC 2 page. If the limit switches detect the presence of the plate, the LEDs will light up.

To enable the function for controlling abrasive thickness and plate height, set parameter PG 12 and the “Enable Abrasives CTRL” option to ON. Set PG 37: distance between the plate height reading sensor and the limit switches.

Calibrate the plate height reading input on the “altezza lastra” page.

Calibrate the input for abrasive thickness reading on the “consumo abrasivi” page.

Perform this operation for all abrasives.

On the INTERASSI page, enter the distance (mm) of the grinding heads from the acquisition sensor (limit switch) for each head and the brush.

Set the diameter of the heads:
PT 01 ÷ 22
The diameter of the head goes through the center of the tools.

Set the orthogonal offset, which is the distance between the center of the head and the middle line of the bridge: PT 23 ÷ 44

Set the partial Rise time: PT 45

Set the minimum rise (if abrasive reading is enabled): PT 89 ÷ 110

There are 8 control points for each head. If all points detect material, the head will lower. Only one unread point is enough to raise the head.

“Closed center” lift/descent solenoid valves for heads		Parameters:
	Valve
	Down cylinder
	Closed center	PT 45
	Up cylinder	PG 04

By setting the partial head lift time (parameters 45 ÷ 66), the lift output is de-energized after that time, and mechanically, when the lift and descent are de-energized, the upper chamber is in communication with the lower chamber of the cylinder, blocking it in that position (closed center). Full ascent will only be done when the head no longer needs to work, after the time set in parameter PG 04.

Check the bridge's behavior with learned quotes.
Enter a value in parameter PG 35: distance between the head's edge and center of the head
Enter a value in parameter PG 36: distance between the bridge and center of the head.
These two parameters influence the position of the bridge during “learned quotes” automatic mode.
If the bridge's movement is incorrect, change the parameters to adjust the bridge's oscillation.

Remove abrasives and ensure that the heads, when descending, cannot damage the belt. Set the belt and bridge to a low speed.

	The blue arrow indicates the slab entering the grinding machine. P is the observation point, observe the behavior of the first head
	Check lift/descent at the edges of the slab
	The head should descend inside the slab and rise as soon as it reaches the edge. If the head descends/rises too early or too late, you need to adjust the correction page.
	Page to act on to advance/delay the lift or descent of the heads

Raise the speed of the bridge and belt, then check that the lift and descent remain correct.
In case they change, check the advance of lift or descent on the dedicated page and modify if necessary.