User guide

4-154 l Operation
Cutter Control Instructions: Homing
HOMING
A defined Home location is required for all servo-positioning applications. After ini-
tial power up, emergency stop or guard opened, home position must be found. All
motion is relative to this home position. The home cycle occurs once after power is
applied to the servo drive in response to the Start push button being pressed. The
cutter head rotates towards the home sensor at the programmed on-demand blade
speed. After the home sensor has been found, the cutter head will decelerate and
stop at the specified offset position. This position is then set to 0.0 degrees at the
end of the home sequence. If the home sensor is not found in one revolution of the
cutter head, the following message is displayed on the operator.
The sensor may be faulty, have a loose connection or be improperly adjusted. Press
any key on the operator to acknowledge the fault. Disconnect power, fix the prob-
lem then restart the cutter.
After a successful home has been completed, if the cutter is stopped away from the
home position and the power to the machine is left on, the cutter head position is
still known. When the cutter is restarted, the cutter head will return at the pro-
grammed On-Demand blade speed to the home position.
Cutter Control Instructions: Home
Offset
HOME OFFSET SCREEN
By pressing the soft key located under the word home on the Maintenance
Screen, the offset for the home position is available.
Additional information on
how to access this screen can be found in the Maintenance Area of the operator
display overview in Appendix G of this manual.
The number shown is the current offset value, i.e. the distance from position
zero. A cursor will appear in the least significant digit. The user has a choice of
ways to adjust this number.
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