Nordson Encore HD iControl System, Руководство по оборудованию

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Installation
3-8
Part 1603054-02
E 2015 Nordson Corporation
Gun Current Path
Refer to Figure 3-4. All electrical circuits need a complete path for current
to make its way back to the source (circle=circuit). Electrostatic spray guns
emit current (ions) and therefore require a complete circuit. Some of the
current emitted by the spray gun is attracted to the spray booth, but most is
attracted to the grounded parts moving through the booth. The current
attracted to the parts flows through the part hangers to the conveyor and to
the building ground, back to the controller through a ground braid and back
to the spray gun through the gun driver board. The current attracted to the
booth is returned through the booth ground to the controller and back to the
gun.
It is very important to provide a complete circuit for the gun current. A break
in the circuit conductors (conveyor, booth, braided ground cables, controller)
can cause voltage to build up on the conductors up to the maximum output
of the spray gun voltage multiplier (up to 100 kV). The voltage will
eventually discharge in a high frequency arc and cause damage to the
controller electronics (gun driver board and power supply).
Gun Current Path
Ground Braid
Booth Base
Ground Braid
Ions
iControl
Figure 3-4 Electrostatic Current Path
Obsolete