96-8000 425
OPTIONS
June 1999
FINE T UNING
The APC was set up, run, and adjusted at the factory. Due to slight variations when disassembling and
reassembling, it will be necessary to fine tune the APC to ensure that the pallets load and unload as smoothly
as possible.
Note: It is normal to hear a 'clunking' sound during pallet loading and unloading.
Unless it is excessive, do not mistake this noise for misalignment.
Macro Variables -
The following macro variables control the location of the VMC table during pallet changes. Fine tuning consists
of adjusting variables #500-507 and the height of the APC. For instance, #500 controls the X position that the
VMC table will move to in order to load pallet 1. If the receiver does not clamp the pallet due to misalignment of
the locating pins and the pallet bushings, this value can be changed to move the receiver closer to or farther
from the APC. The drive pin on the chain should drop the pallet directly over the locating pins. Similarly, if the
pallet is misaligned in the Y-axis, causing the pallet to shift to one side during loading and unloading, variable
#501 can be modified. The following macro variables can be adjusted:
# 500 = X pallet 1 load position
# 501 = Y pallet 1 load position
# 502 = X pallet 1 unload position
# 503 = Y pallet 1 unload position
# 504 = X pallet 2 load position
# 505 = Y pallet 2 load position
# 506 = X pallet 2 unload position
# 507 = Y pallet 2 unload position
# 508 = Clamp Delay
# 509 = Unclamp Delay
# 510 = Next pallet number
# 511 = Door Delay
Macros must be enabled in order to use these statements. The macro variables can be viewed on the CURNT
COMDS (Current Commands) page of the VMC display. The PAGE UP and PAGE DOWN keys may then be
used to locate the correct list of macro variables. To scroll through this list, use the Cursor Right and Left
buttons. Refer to the VMC Operators Manual for instructions on how to modify these variables.
To stop a pallet change in order to adjust the macro variables, press FEED HOLD at any time. This will cause
the pallet change to stop after the present step is completed. Pressing CYCLE START will restart the program.
If E-STOP is pressed during a pallet change, the motors will stop instantly, and the machine will have to be
reset. If one of the chain location switches is not tripped at this time, the chain position will also have to be
reset using the chain position adjustment tool.
22. POWER ON the VMC. Release the E-STOP button and press RESET. WARNING! The auto-
matic door may move when the VMC is powered on. Keep hands clear.
23. In MDI mode, command an M17, then an M14, to position the VMC table.
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