CAUTION: Always check the wiring configuration
in the electrical panel terminal blocks before and
after making electrical connections. Verify that the
jumpers are in their correct locations to avoid
possible damage to the system!
4.4.1 Automatic Heads
The appropriate power-in head program wires and jumpers must be
configured or installed in the terminal block provided. A detailed
diameter holes in the chassis are provided for these installations.
Close the front panel after completing electrical wiring.
4.4.2 Head Control Circuit
The head control circuit allows electrical valving signals to be
channeled to the correct applicator head(s). This circuit is enabled
and disabled by the HAT switches (user-added option only)
located on the front panel. A KB30 with the maximum five
head/hose combinations or KB50/KB100 with the maximum six
head/hose combinations and three HAT switches can be configured
so that the three HAT switches control different combinations of
the five or six heads. The HAT switches are wired in two different
modes: Internally wired HAT switches utilize the melt unit's
voltage as a power source; externally wired HAT switches use a
separate power source for systems that use external control
devices. Head control circuits must be isolated from the melt unit
result to the timing device.
These wiring configurations are illustrated in the electrical
schematic that ships with the melt units.
!
electrical schematic is shipped with the melt units. Astro Packaging
recommends the use of 3/8" liquid tight conduit and fittings
when routing wires to the electrical terminal blocks. 7/8"
power when using Astro Packaging DC Head Drivers or damage will
14 KB30, KB50 and KB100 Series Hot Melt Units 19600-159 Rev. A 04/09/09 © Copyright Astro Packaging 2009
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