17 XFC G4 2103335 Rev AB
3.2 XSeriesG4 Flow Computer Hardware
All of the Totalflow XFC
G4
models are housed in a lightweight, two-compartment aluminum case. With the exception of the size
of the cases, the XSeries models use identical components:
— Enclosure
— XFC
G4
Board
— External Integral Multi-Variable (XIMV) (6410, 6413, 6713 only)
— Battery Compartment
— Communication Compartments (6413, 6414, 6713 and 6714 only)
— Liquid Crystal Display (LCD)
— Charger or Solar Panel
— Resistive Temperature Detector (RTD)
— Optional Modular I/O
— Optional Keypad
3.2.1 XFC
G4
Board
The XFC
G4
board is mounted on the inside of the door. All XFC
G4
input and output connections are made with Phoenix-style
snap-in connector terminals mounted directly on the board. Other circuitry processes the inputs from the External Integral
Multivariable (XIMV) and provides interfaces to the Liquid Crystal Display (LCD) and the PCCU. Remote communications are
handled by the RS-232 and RS-485 communication modules that plug directly into the XFC
G4
board. The XFC
G4
board offers the
following input and output points:
— XIMV Communication
— 2 Digital or 2 High Speed Pulse Inputs (Selectable De-bounce Enable/Disable)
— 2 Digital Outputs
— 2 Analog Inputs
— 2 Remote Communication Ports (RS-232 or RS-485)
— I/O Interface for TFIO Interface Modules
3.2.2 CPU Engine Card
The CPU engine card plugs into the XFC
G4
board. All processor and memory components reside on the CPU engine card. The
engine card uses a low power processor running at 192MHz with 16M SRAM, 32M Flash and 256 bytes of serial EEPROM. A
lithium backup battery is located on the main circuit board. Application programs and configuration files are stored in non-volatile
Flash.
Caution- Loss of data: Unplugging the engine card disconnects it from the lithium cell backup, and SRAM
(historical flow data) is cleared.
3.2.3 Communication Compartment
A removable communications enclosure can be provided that has been pre-drilled for mounting of many popular
communications devices such as radios, cellular phones, modems, etc. Models XFC
G4
6413 and 6414 provide an enclosure to
house a remote communication device, transceiver, cellular phone, etc.
3.2.4 Battery Compartment
The battery compartment houses the various optional battery packs that are available for the XFC
G4
. These range from eight (8)
ampere hours up to 26 ampere hours. Installation of the battery requires removing the battery plate, placing the battery in place
and connecting the battery cable to the circuit board, see section 5 Maintenance, page 89.
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