Ransburg MMA-303 Direct_Ind Charge Atomizer A12870 - Manual (Page 12)

MMA-303 Direct/Indirect Charge - Introduction
9 LN-9269-11.3
GENERAL DESCRIPTION
MMA-303 Direct and Indirect Charge
The MMA-303 can be configured for direct
charging of solvent borne paints. By simply
removing the high voltage ring and adjusting
the high voltage cable input position, the MMA-
303 can be used with a wide range of solvent
borne paints.
The MMA-303 can also be configured as an
indirect (external) charging electrostatic appli-
cator for use with grounded waterborne fluid
systems.
Bell Cup Assembly
All bell cups are made of high strength Titani-
um. Bell cup assemblies are available in
65mm serrated, non-serrated for base coat ap-
plications and 55mm or 65mm serrated for
clear coat and primer applications. A 30mm
and 55mm aluminum bell cup is available.
Air Bearing Turbine Assembly
The air bearing turbine assembly with bell cup
is secured to the turbine manifold assembly
with a turbine retaining ring.
Turbine Manifold Assembly
The assembly is secured to the mounting man-
ifold assembly with a quick disconnect ring
which allows for easy installation and inspec-
tion.
Mounting Manifold Assembly
The air and fluid ports are compactly oriented
for use in robotic or machine mount applica-
tions. A wrist adapter is available for adapting
to virtually any robot mounting configuration.
Power Supply and Controls
The High Voltage Cascade (74793-XX) is lo-
cated outside the MMA-303 and is controlled
by the MicroPak control unit. The low voltage
output of the MicroPak is multiplied by the cas-
cade to the high voltage level required. The
high voltage output of the MicroPak is multi-
plied 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 the MicroPak control. The Micro-
Pak format is designed to fit in a conventional
19-inch or 10-inch rack and requires a 24 pow-
er input at a maximum 3 amps.
The MicroPak is designed to electronically lim-
it 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 over-
current limits are adjustable 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 the MMA-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 lo-
cated on the applicator. A Serial Digital Mod-
ule 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 previously stated modules are mounted in
one 19-inch rack and interconnected through a
common mother board.