Ransburg 9060 HV P.S. Electric Motor 80102-21X - Manual (Page 12)

9060 for No. 2 Process Handgun - Introduction
7 CP-13-03.2
INTRODUCTION
GENERAL DESCRIPTION
The Ransburg
No. 2 Handgun Process
The No. 2 Process
TM
is an electrical atomiza-
tion method for applying coatings to objects
electrostatically. The No. 2 Process Handgun
system applies a high voltage, negative, DC
charge to the applicator bell, creating an
electrostatic field between the bell and the
target object. The target is electrically ground-
ed through its support which may be station-
ary or moving; or through an electrical con-
nection to a known true earth ground.
A regulated pressure fluid system delivers
coating material to the bell when the gun is
triggered. There, the fluid travels across the
face of the rotating bell and becomes charged.
The fluid is electrically atomized at the edge of
the bell forming a fine mist which, under the
influence of the electrostatic field, is attracted
to and deposited on the target object. The
forces between the charged particles and the
grounded target are sufficient to turn almost
all overspray around and deposit it on the side
and back surfaces of the target. Thus, a high
percentage of the spray is deposited on the
target and overspray is controlled.
The 9060 High Voltage Controller
The Ransburg 9060 High Voltage Controller
(80102-21X) is used to provide high voltage
for the No. 2 Process Handgun. It uses a
combination of proven high voltage generation
technology and microprocessor-based control.
It uses current feedback information to main-
tain the required kV output for the No. 2
Process Handgun. The processor circuitry
provides the maximum in applicator transfer
efficiency, while maintaining the maximum
safety.
The 9060 Controller for the No. 2 Process
Handgun has a fixed setpoint value which
can NOT be adjusted. The triggering of the
HV is initiated by the on-off switch on the
No. 2 Process Handgun. For more infor-
mation, please refer to the “Theory of
Operation” in the “Operation” section of this
manual.
SAFETY FEATURES
The Ransburg 9060 High Voltage Controller
provides maximized operational safety. The
protections include detection of Ground
Faults, Cable Faults, Feedback Signal Fault,
Current Limit Fault and Overvoltage Fault.
The microprocessor circuits provide a
controlled output load curve, which limits the
high voltage output to safe levels while
monitoring control and feedback signals for
unsafe conditions. Maximum operational
safety is obtained when the correct applica-
tor settings are used and when safe distanc-
es between the applicator and target are
observed and followed. The maximum
efficiency of the high voltage controller is
based on load.
DISPLAYS
The front panel displays the high voltage set
point as well as a reading of the gun current
output. The gun current is derived from
feedback signals between the controller and
the cascade.
Figure 1: 9060 High Voltage Controller (HV2)