West Control Solutions MRC 9000 - Manual (Page 11)

Section 1 1-5 Edition 3
Rev G
OPERATOR INTERFACE
Beyond the configuration capability, the display, keypad, and prompting system provide superior real time data presentation.
The display of each instrument value is configurable and three display formats are available, providing a range from fully
detailed displays with 20 character tags, alarm indications, values, and units, to four process values displayed simultaneously.
Separate keys are used to access the display, chart, and configuration related areas. By selective enabling and password
protection, access to various operational areas of the instrument can be limited or controlled. Some keys can also be config-
ured to provide special functions, such as resetting totalizers. The operator interface has been designed to make daily operation
as simple as possible. Changing charts, for example, requires only three keystrokes.
CONSTRUCTION
The instrument is housed in a structural foam moulded enclosure which can be panel or surface mounted. Mounting brackets
are included. Its design allows it to fit into the smallest panel cutout of competitive products, while it covers the largest cutout
of others. Glass and plastic windows are available, along with a cover lock. The standard enclosure carries a NEMA3 rating,
with an optional NEMA4X available.
OPTIONS
The instrument is available with a full compliment of options. Up to eight isolated universal inputs are available with each being
configurable to any of the available input types. Up to four isolated transmitter power supplies can be added. Up to four inputs
or derived variables can be assigned as "process variables", allowing up to four alarms for each. Alarms can be process high or
low, or rate rising or falling. The alarming capability is standard, but the hardware outputs are optional. Up to eight on/off
outputs are available, either relay or solid state relay driver outputs. Besides alarms, any of over eighty other digital values/
states can be used to actuate on/off outputs. Up to two non-isolated analog outputs or up to 4 isolated analog outputs are
available. Any of over twenty values can be used to drive analog outputs (i.e. inputs, derived variables, etc.) Other options
include PC based configuration software and a communications interface.
FIELD UPGRADES
All of items listed in the Options section are easily installed in the field. Typically it involves just adding boards, but possibly
PROMs may need to be changed as well. To add totalizers or the math package, only PROMS must be changed. If the four
color option was purchased, only PROMS need to be changed to expand trend capability, otherwise, a relative costly pen arm
assembly must be replaced as well.