Nordson MPS306F, Customer Product Manual, Page: 13 / 70

Description
2-1
Part 1074166-02
E
2018 Nordson Corporation
Section 2
Description
Introduction
The MPS306F power supply is used with the
Nordson CoolWave ultraviolet microwave applied
curing system with a CW306 lamphead.
The power supply provides high voltage for the
lampheads and a control circuit to interlock the
lampheads with the machine.
Power Supply Versions
Two versions of the power supply are available:
Part Number Usage
775221 50 Hz power, lampheads without
internal blowers
60 Hz power, lampheads with or
without internal blowers
1061956 50 Hz power, lampheads with
internal blowers
This power supply features an
integrated motor speed
controller, which ensures an
internal motor blower lamphead
will develop the correct cooling
air flow for all 50 Hz power
installations. Refer to the
Installation for proper line power
connection and input power
configuration.
What is UV Curing?
Ultraviolet curing is achieved by a chemical
reaction in special inks and coatings when intense
UV energy is focused on them. Curing efficiency
depends on UV power, coating weight, operation
speed, type of substrates, material chemistry, and
other factors.
The UV Curing System
The system is designed to cure UV inks,
adhesives, and coatings for numerous industrial
applications.
The system consists of an individual six-inch
lamphead, a corresponding fixed output power
supply, and an RF detector. Additional lampheads
can be lined up end-to-end to form longer curing
widths.
Figure 2-1 and Table 2-1 illustrate and describe the
major components of a typical setup for a
CoolWave ultraviolet microwave applied curing
system. Your system may appear different
depending on your application requirements.
How Does it Work?
A microwave generator (magnetron) operating at
2400 to 2500 MHz is used to excite a medium
pressure mercury bulb installed in a lamphead.
Ultraviolet light between 220 and 470 nanometers
is emitted.
Microwave energy from a magnetron is directed
into a cavity containing the UV bulb. A screen
located at the opening of the cavity allows the UV
light to pass through while the microwave radiation
is contained.
In addition to ultraviolet light, the high-energy bulbs
radiate heat. Therefore, a cooling system is
incorporated to take away the excess heat and
make sure that the bulbs and lamphead assembly
remain at an acceptable operating temperature.
The unit is equipped with interlocks and safety
measures to prevent the operation of the system in
an unsafe condition. In the event of a UV fault, an
LED on the power supply’s front panel will indicate
the fault type.