Ransburg RMA Indirect A11600 - Manual (Page 11)

GENERAL DESCRIPTION
Bell Cup Assembly
All bell cups are made of high strength Titanium.
They are available in 65mm serrated, non-serrated
for base coat, primer, and clear coat applications.
Air Bearing Turbine Assembly
The air bearing turbine assembly with bell cup
is mounted to the air manifold assembly with a
turbine retaining ring.
Air Manifold Assembly
The atomizer extension is angled at 60° for robot
applications. The fluid feed tube and fiber optic
turbine speed emitter are threaded into the front of
the manifold. The turbine, fluid, and air manifolds
are separated from the bell plate assembly by the
atomizer extension.
Bell Plate Assembly
The bell plate assembly is designed to be at ground
potential when mounted to the robot plate compo-
nent within the tubing bundle assembly. The air
and fluid ports are compactly oriented for use in
robotic applications. The interior air supplies are
ported through the color coded tubing directly to
the air manifold assembly. On the exterior side
of the bell plate, the ports are provided with o-ring
seals so that the atomizer can be quickly mated
and secured to the robot plate.
Robot Plate
The robot plate is a component of the tubing
bundle assembly and intended to be permanent-
ly mounted to the robot. A wrist adapter is also
available, which matches the robot's mounting
configuration. The incoming air lines, fluid lines,
and fiber optic cable are connected to the fittings
provided on the back of the robot plate. The bell
plate of the atomizer assembly is secured to the
robot plate with a threaded retaining ring.
Break-Away Feature (Optional)
The RMA-303 can be converted to have a break-
away feature. By replacing the six (6) stainless
steel screws with six (6) special designed plastic
screws (77524-00). This feature minimizes the
damage to the atomizer, robot, etc. If a collision
occurs, the six (6) plastic break-away screws fail
and the atomizer will break free. This will leave the
break-away ring and the mounting ring attached
to the robot. (The applicator will fall to the booth
grate or floor.)
Power Supply and Controls
The high voltage cascade (74793-XX) is located
outside the RMA-303 and is controlled by the
MicroPak TM control unit. The low voltage output
of the MicroPak is multiplied by the cascade to the
high voltage level required. The high voltage is
supplied to the atomizer by a high voltage cable
(A10560-XX). A low voltage cable interconnects
the cascade and MicroPak control. The MicroPak
Eurocard format is designed to fit in a conventional
19-inch or 10-inch rack and requires a 28 V power
input at a maximum 6 amps.
The MicroPak is designed to electronically limit
current to provide safe operation in a spray booth.
The voltage and current draw of the atomizer are
continuously displayed on the MicroPak control
panel. Voltage and overcurrent limits are ad-
justable on the front of the MicroPak. MicroPak
internal safety circuits will shut down the system
on over-current and cable faults.
With additional control modules, all of the functions
of RMA-303 and MicroPak can be controlled by
a programmable controller. A Serial Atomizer
module pneumatically controls the speed of the
rotary atomizer with dynamic feedback through a
fiber optic transmitter located on the applicator.
An AirTronic module pneumatically controls the
atomizer’s (pattern control) shaping air. A Serial
Digital module pneumatically controls the paint,
solvent, and dump valves located on the atomizer.
An I/O module provides communication between
these modules and the PLC.
The above modules are mounted in one 19 inch
rack and interconnected through a common
mother board.
RMA-303 Indirect Charge - Introduction
Ransburg
7 LN-9252-06.4