3 cpu/system controller board, Cpu/system controller board -4 – Emerson Process Management Bristol ControlWave ExpressPAC User Manual

Page 10

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ControlWave ExpressPAC Instruction Manual (CI-ControlWave EPAC)

1-4 Introduction

Revised

Mar-2011

Enclosure The ControlWave ExpressPAC enclosure is a standard NEMA 3R

rated fiberglass enclosure. The enclosure consists of the body and the
front cover. A continuous gasket seals the unit when you close the
front cover. Two latches on the enclosure’s right side secure the cover.

The enclosure includes a weatherproof connector (local port) mounted
to the bottom of the cover and connected internally to RS-232 COM
port 1.

The enclosure includes a display or display/keypad for an operator or
technician to view process values locally.

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.

You can order the ControlWave Express from the factory with one of
the following power options:

 Single 6V lithium battery
 Dual 12V lithium battery pack
 6V, 7AH lead acid battery used with a 1W, 6V solar panel.
 6V, 7AH lead acid battery used with a 5W, 6V solar panel.
 12V, 7AH lead acid battery used with a 5W, 12V solar panel.
 No battery; user-supplied power source.

Radio/Modem You can order the ControlWave ExpressPAC 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 ExpressPAC 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),

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