Calibration; Gun Compensation (Optional) - Graco InvisiPac HM25 Operation, Repair, And Parts

Calibration

Calibration

Gun Compensation (optional)

For high speed and precision applications.
NOTE: Before entering gun compensation values, make
sure the gun-trigger offset has been entered on Event
Map, page 29.
Gun compensation ensures higher accuracy of bead
placement. Begin with Recommended Values below
and adjust according to Calibration Routine.
Gun Compensation Adjustment Guide:
Edge
Relative Position
Desired:
vs.
Dispensed:
Adjustment
Gun Compensation Formula:
Determine the gun compensation adjustment amount in milliseconds.
Standard units:
Metric units:
Bead offset distance in inches (mm) as a function of Gun Compensation and Line Speed
Gun
Compensation
(ms)
5
10
20
40
Leading Edge
Lagging
Increase
Adjustment (ms) =
Adjustment (ms) =
50 ft/min 100 ft/min
15.24 (m/min) 30.48 (m/min)
0.05 in. 0.1 in.
1.27 (mm) 2.54 (mm)
0.1 in. 0.2 in.
2.54 (mm) 5.08 (mm)
0.2 in. 0.4 in.
5.08 (mm) 10.16 (mm)
Recommended Values
GM-100: 5-10 ms
GS-35: 10-20 ms
Unknown, other: 10 ms
Calibration Routine
1. Navigate to Gun Setup, page 33.
2. Dispense desired pattern (program contained within
the pattern controller).
3. Measure the error distance between the dispensed
pattern on the product and the desired pattern.
4. Adjust open/close compensation values according
to the following Gun Compensation Table and
Gun Compensation Formula below.
5. Repeat steps 2-3 until desired pattern achieved.
Leading Lagging
Decrease Increase
5000 x Measured offset distance (in.)
Line speed (ft/min)
60 x Measured offset distance (mm)
Line speed (m/min.)
Line Speed
200 ft/min
60.96 (m/min)
0.2 in.
5.08 (mm)
0.4 in.
10.16 (mm)
0.8 in.
20.32 (mm)
Trailing Edge
Leading
Decrease
500 ft/min 1000 ft/min
154.24 (m/min) 304.8 (m/min)
0.5 in.
12.7 (mm) 25.4 (mm)
1.0 in.
25.4 (mm) 50.8 (mm)
2.0 in.
50.8 (mm) 101.6 (mm)
1.0 in.
2.0 in.
4.0 in.
334784G