Ransburg RMA Dual Purge Direct A12300 - Manual (Page 12)

RMA-303 Dual Purge/Direct Charge - Introduction
7
Power Supply and Controls
The high voltage cascade located inside the RMA-
303 is controlled by the MicroPak TM control unit.
The low voltage output of the MicroPak is multi-
plied by the internal cascade to the high voltage
level required. This eliminates the need for a high
voltage cable. 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 24V power
input at a maximum 3 amps. The MicroPak and
the internal cascade will produce voltages up to
100,000 VDC.
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 inner (pattern control) and outer (cut-
in 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.
NOTES
Ransburg
LN-9263-08.5