Instruction manual

ControlWave Gas Flow Computer (GFC Plus) Instruction Manual (CI-ControlWave GFC Plus)
1-4 Introduction Revised Feb-2013
Internal Mounting
Brackets and Battery
Internal mounting brackets support the various system components,
such as the battery, CPU/System Controller and Process I/O boards,
and the radio/modem option. These components attach to the one piece
mounting bracket which is secured to the inner rear wall of the
enclosure. A factory-supplied radio or modem mounts in front of the
battery on a battery cover/radio mounting plate.
Radio/Modem Options
You can order the ControlWave GFC Plus with a factory-installed
modem or spread spectrum radio. The unit supports a variety of MDS
and FreeWave radios and modems. Contact Emerson Remote
Automation Solutions for more information.
1.3 CPU/System Controller Board
The CPU (central processing unit) and System Controller Board (SCB)
contains the ControlWave GFC Plus CPU, I/O monitor/control,
memory, and communication functions.
The CPU/System Controller board includes:
 Sharp LH7A400 System-on-Chip ARM microprocessor with 32-bit
ARM9TDMI Reduced Instruction Set Computer (RISC) core, with a
system clock speed of either 14 MHz or 33 MHz.
 two RS-232 communication ports
 one communication port configurable by jumpers as either RS-232
or RS-485
 optional 10/100baseT Ethernet port (See Table 1-1)
 2 MB of battery backed Static RAM (SRAM),
 512KB boot/downloader FLASH,
 8MB simultaneous read/write FLASH memory
Board Variations
The CPU/System Controller board has two basic variations:
`
Table 1-1. CPU/System Controller board Variations
CPU Nominal
Input
Power
Ethernet
Port?
Solar
Regulator
?
Auxiliary
Power
Output?
RTD Input?
14MHz
ultra low
power
+6Vdc or
+12Vdc
No Yes Yes Yes.
Connects to
100-ohm
platinum bulb.
Uses DIN
43760 curve.
33MHz +12V or
+24Vdc
Yes No No Yes (same as
ultra low
power)
Note: Each of the variants shown in Table 1-1 may be ordered with or
without special gas calculation firmware.