About Motion Control
KVAL 994-X Operation/Service Manual
6-2
About Motion Control
This section describes the positioning systems found in KVAL machinery. There are three basic
types of motion control methods used in KVAL Machinery.
Sequencing:
Sequencing is a series of events executed in a predetermined order. Most KVAL machines use a
form of sequential motion control. A typical series of events for a KVAL machine are:
1. Move the door into position.
2. Clamp the door.
3. Make the cuts.
4. Unclamp the door.
5. Move the door out.
6. Wait for the next door.
Point to Point:
Point to point motion control involves moving a load from one fixed position to another fixed
position at a constant speed and along one line (axis X,Y, or Z). A typical point to point would be
a drill with a fixed-depth. The drill is either retracted or extended using a pneumatic cylinder.
Typically the drills travel is limited by physical stops.
Incremental:
Incremental motion control is used when the load is required to be moved with high accuracy to
multiple locations, sometimes in multiple directions (axes). A typical KVAL usage for this system
is a computer controlled router in a door light machine where there is great variety in the cut size,
shape and location.
Basic Control Circuit
This section describes a basic control circuit. The Figure below shows a block diagram of a com-
mon control circuit. There are four parts to a motion control system:
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