430
OPTIONS
96-8000
June 1999
Read Switches:
If both pallets are home on APC, move to load pallet position # listed in macro variable #510.
If a pallet is on the receiver, determine the unload position.
Move the table to the correct unload position.
Open the automatic door.
Execute Pallet Change (with a pallet on the receiver):
Unclamp receiver.
Start chain drive (unload pallet).
Stop chain drive when pallet hits stop switch.
Move table to new position.
Start chain drive (load pallet).
Stop chain drive when Chain Switch Block trips the Chain Stop switch.
Clamp receiver.
Move table away from automatic door.
Return to Normal Operation:
Turn beeper off.
Disable chain drive.
Close automatic door.
Note: The M50 pallet change macro must be successfully completed before normal
VMC operation can continue.
LIMIT S WITCHES
The APC contains the following six (6) limit switches that monitor machine operation:
Door Open Switch - Senses when the door is in the fully up position. Note that the door is not sensed in the
down position.
Receiver Clamp/Unclamp Switch - Senses whether or not the receiver is in the down (clamped) position.
Pallet Stop / Location Switches (2) - Sense whether each pallet is home (on the APC). When a pallet is
being unloaded, the chain drive will stop when this switch is tripped.
Chain Stop / Location Switches (2) - Sense the chain location, and whether it is in the correct position to
perform an operation. After a pallet has been loaded, the chain drive will stop when this switch is tripped.
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