Plates Do Not Reach Punch Position

Ido Shatzki
02-Jan-01

problem:

Intermitted error message "Plate did not reach punch position" which happens ONLY during plate loading, while Lotem is exposing the previous plate.

solution:

Due to the vibration of the machine (while exposing) the plate may slide back and away from pins. There are two cases:

1. When the centering system is not holding the plate tight enough.

• Check if ALL centering parameters are the default ones( except for "Virtual Hp App Value").
• Check that the centering motor pin is not broken, or replace the motor (do not forget to calibrate the new value of "Virtual Hp App Value" after motor replacement).

2. When cassette motor interlock open for a micron of a second, the XY suction cups drop the plate. The drum keep on spinning and exposing with out any error message on the GUI. If this is your case, you probably find the plate punched and laying near the punches area.

• Check the pins that hold the cassette, they should hold the cassette tight with out movement.
• Make sure that the gap between the cassette magnetic sensor and the cassette is minimal.