Description
A 2-7
Part 331235C
E 2003 Nordson Corporation
Part A: System Overview
IPS Gun Operating Modes
Mode Description
Standard The Standard mode provides maximum transfer efficiency when coating large
objects with a gun-to-part distance of 0.2−0.3 m (8−12 in.). Only kV can be
adjusted in the Standard mode.
Select Charge The Select Charge modes allow the operator to select different electrostatic
charging characteristics to get an optimum coating on differently shaped parts.
Mode 1
(Recoat)
This mode is used when recoating parts that have already been cured, but
require additional coating and curing. This mode aggressively reduces gun
current to eliminate back ionization.
Mode 2
(Special)
This mode is for coating with special powders (dry blend metallics or micas).
This mode allows adjustment of voltage and current to coat parts effectively.
Mode 3
(Deep Cavity)
This mode is for coating inside boxes or other deep cavities. This mode uses
fixed, low voltage and current to coat front edges and high voltage and current
to coat inside of the deep cavity.
AFC
(Automatic Feedback
Current)
Automatic Feedback Current (AFC) is a function that is available in Standard
and Select Charge modes. The maximum current output from the spray gun is
controlled by the operator-adjusted set point (A output). This allows the
operator to limit the maximum output current of the gun to prevent excess
charging of the powder. AFC provides an optimum combination of kV and
electrostatic field strength for coating parts with interior corners and deep
recesses at close range.
NOTE: AFC set points may be either locked at factory- programmed default
settings or enabled for operator adjustment. Refer to the Configuration section
in this part of the manual for instructions for locking out set point adjustment or
enabling set point adjustment.
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