Laser Mech FiberCUT HR, Operation Manual

Page: 21 / 62

PLMNL0252 REV. B Effective Date: 10/16/17
15
FiberCUT
®
HR Operation Manual
3.3 Electrical Grounding and Noise
The capacitive height sensing circuitry
contained in the FiberCUT
® HR cutting
head measures small changes in electrical
capacitance between the tip and earth-
ground to determine tip-to-part standoff
distance. In order for this circuit to function
properly the part and the cutting head need
to be connected to a good earth ground.

Ideally the ground should be
established from a ground rod,
approximately 2 meters in length driven
into the ground located near the base
of the machine.

A large gauge (1.6mm diameter or
larger) ground wire should be run from
the ground rod to the part.

Run a separate wire from the ground
rod to the FiberCUT
® HR grounding
lug. See Figure 21 .
Figure 21
Electrical noise can create height sensing
issues. Large electric motors, arc welders
and other devices may be a source of
significant electrical noise. In order to
eliminate this noise, it may be necessary to
connect a ground wire to the chassis of any
such device near the process.
3.4 Control Box Mounting
The control box mounting pattern is
illustrated in
Figure 22 . Important things to
consider when mounting the control box:

Standard cable length is 8 meters
(25 feet).

Easy access for maintenance.

Mounting so debris from the process is
not directed at the control box.

Mounting in an area where there are no
water leaks or oils from hydraulic lines.
Figure 22