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980541-001 Rev. A P640i Card Printer User Guide 53
Flip station calibration: This routine determines
the number of motor steps it takes for the carrier to
descend from the “rest position datum” (Edge A in the
diagram) to the “real” rest position, that being the
carrier’s physical end stop.This stored number is used
to drive the carrier down to the rest position before
each and every flip station action.
Calibraton is a one-time setup routine, but is also
a useful starting point when diagnosing flip
station problems.
Power OFF. Lift the cover, then push the carrier
down to its physical end stop. Push at the back of
the carrier, near the guide shaft. Do
NOT force!
Click Flip Station Calibration
. This elevates the
carrier until Edge A just clears the photo sensor, at
which point the motor stops, and the step count is
saved in flash memory. The motor then drives the
carrier back down to the rest position.
Carrier Motion
Vertical motion of the carrier is detected by a single
photo sensor, activated by two tabs at the back of the
carrier molding. The carrier is positioned by counting
a specific number of motor steps from the instant
the sensor’s optical path is opened or closed by
edges A, B and C.
Flip station components
The two halves of the sensor (arrow) are
contained in cavities in the molded back wall of the
flip station. The sensor tabs are integral with the
carrier molding. Edge C is hidden by the card ejector
arm.
Flip Station Parameters in the Driver
Start > Printers (or Printers and Faxes) > Right
click Zebra P640i > Properties > Device Settings
> Printer Adjustment > Flip Station Adjust
Card Position Adjust (Pixels): Adjusts how far
the truck drives into the flip station. Should be set so
that the card is centered in the flip arms (if it isn’t
centered, the truck may have difficulty removing the
card after the flipping action). If the card position is
incorrect, the truck can depart, leaving the card in the
flip arms,
or it may
drag the
card an
inch or two
toward the
print
station,
then jam.
Start >
Printers (or
Printers and Faxes) > Right click
Zebra P640i >
Properties > Device Settings > Control > Advanced
Utilites > Move Truck (to Flip Station)
In
1, the card should drive smoothly to rest almost
touching
the right hand edge of the flip station base
molding. It must not rebound off the edge. To move
the card further to the right, increase (make less
negative) the Card Adjust parameter, and vice versa.
Now click
Flip Test 3
with Flip
enabled.
The card
should
land as 2, with a gap of between 0.04" and 0.1" (1 to
2.5 mm). The exact gap isn’t critical, but it has to be
visibly there.
Rest
Position
Adjust:
Adjusts
how far
down the
carrier
drives.
This
parameter
is the
number of
motor
steps,
more or
less,
relative to
the Edge
A
event at
the photo
sensor
(diagram
Platen
Card
Truck