Description
2-8
Part 1128350_02
E 2020 Nordson Corporation
Functional Blocks
The following is a brief description of the functional blocks within the system.
Low Voltage Controller (LVC)
The LVC is the brains of the system. It coordinates the activities of the entire
system using e xtensive communications capability. The following
communications channels are supported:
S Communication to the OLED user interface is located on the electrical
enclosure box (E-Box) door.
S Four external Ethernet ports
S Two Nordnet Master connectors
S Fieldbus communications slot (CompactCom)
S Wireless module connector
In addition, the LVC controls some system I/O directly such as:
S AC power contactors (in conne ction with the overtemperature
thermostat)
S Pump solenoid
S Remote pressure adjust
S Fill system
S Standard I/O (1 isolated input; 1 relay output)
Data storage is an important capability of this system. Examples of tasks
include recipe saving and loading, software upgrades and capturing the
event log for analysis. Storage is handled by an on-board micro SD card and
a USB port for flash (or thumb drives). The system is designed so that a user
can perform all needed tasks involving storage using the USB port. The
micro SD card is intended for internal use only. In general, it is best to leave
the micro SD card alone.
Finally, the LVC supports expansion through the use of daughter cards and
the various communication mechanisms.
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