Hypertherm ArcGlide Torch Height Control, Instruction Manual

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2-60 ArcGlide THC Instruction Manual
INStALLAtIoN
encoder Counts per Inch
Description: This value scales the position feedback.
When to use: During installation.
How to use: The value is based on the ball-screw pitch and the encoder resolution, it is equal to the number of
encoder counts per revolution multiplied by the number of revolutions required to travel one inch. The
encoder is operated in (4X) mode so the number of counts per revolution is equal to the number of
pulses per revolution multiplied by four.
The value used for the Hypertherm 24.13-cm (9.5-inch) lifter is 20,320 counts per inch. The
Hypertherm 24.13-cm (9.5-inch) lifter has an encoder with 1,000 pulses per revolution which
produces 4,000 counts per revolution in 4X mode. The Hypertherm 24.13-cm (9.5-inch) lifter has a
5 mm pitch ball-screw which requires 25.4 (in/mm) / 5 (mm) = 5.08 revolutions to travel one linear
inch. This results in a value of 5.08 (revolutions) x 4,000 (counts/revolution) = 20,320 counts per
linear inch of travel.
Example: 20,320 counts per linear inch.
Slide Length
Description: This value is the length of the lifter’s usable travel.
When to use: During installation.
How to use: The ArcGlide lifter has 9.45 inches of usable travel.
Example: 9.45 inches
Current Limit
Description: This is the maximum continuous motor current for which the lifter motor is rated.
When to use: During installation.
How to use: This value may be periodically exceeded for a couple of seconds during extreme acceleration but it
is used as the normal continuous operating current limit. The Hypertherm 24.13-cm (9.5-inch) lifter
uses a motor with a 3 Amp continuous current limit.
The motor can be damaged if the value for this parameter is set above the continuous current
operating limit for the installed motor.
Range: 1 to 6 Amps, the default setting = 3 Amps
ArcGlide setup parameters (continued)