Ransburg RMA Direct A12867 - Manual (Page 13)

RMA-303 Direct Charge - Introduction
LN-9266-11.3 10
the robot. (The applicator will fall to the booth
grate or floor).
Power Supply and Controls
The high voltage cascade is located inside the
applicator and is controlled by the MicroPak
control unit. The low voltage output of the Mi-
croPak is multiplied by the internal cascade to
the high voltage level required. This elimi-
nates the need for a high voltage cable. A low
voltage cable interconnects the cascade and
MicroPak control. The MicroPak format is de-
signed to fit in a conventional 19-inch or 10-
inch rack and requires a 24V power input at a
maximum 3 amps. The MicroPak and the in-
ternal cascade will produce voltages up to
100,000 VDC.
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 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 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 above modules are mounted in one 19-
inch rack and interconnected through a com-
mon mother board.