Transformer Function - Nordson ProBlue P4 Customer Product Manual

E-5
400/480 Volt ProBlue Adhesive Melters

Transformer Function

Input electrical service of 400 or 480 volts is split between the melter heaters
and the transformer(s). The melter's manifold and tank heaters operate on
line voltage, which is passed through the transformer to the melter using a
special wire harness. The melter's CPU controls the duty cycle of the
heaters. No change in melter programming is required in order for the
transformer to operate.
The transformer(s) reduces the input electrical service to 230 volts and
directs the reduced voltage to the melter's main circuit board. The main
circuit board uses this voltage to power the hoses and guns and provide
control power to the CPU.
CPU‐generated control signals are fed to a driver board in the transformer
which uses high‐power TRIACs to switch power to the manifold and tank
heaters.
Part 1024496_06
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