West Control Solutions MRC 9000 - Manual (Page 306)

Edition 3
Rev G
Appendix C C-11
RELAYS - System Prompts - Configuration - Page 4-66
Prompts section that configures actuators and other parameters associated with relay and/or solid state relay
driver outputs.
RELAY x USAGE - System Prompts - Configuration - Relays - Page 4-66
Parameter that specifies the type of output the relay is to provide, or how it is to be used: STATE OR ON-OFF,
TIME PROPORTIONING, or PULSED OUTPUT.
RINGS AND TIME LINES - See CHART TYPE USED
RINGS/LINES/SCALES - See CHART TYPE USED
RINGS ONLY - Chart Prompts - Chart Configuration - Page 6-2
A choice for the parameter CHART TYPE which specifies that the charts only has preprinted rings. This is what is
typically used, as it takes full advantage of the recorder’s ability to annotate the chart, by adding time lines, scale
lines, and scale values.
ROTATE CHART ACTUATR - Chart Prompts - Chart Configuration - Page 6-12
Parameter which specifies an actuator, which, when true, causes the chart to “rotate” for normal trending. When
YES is selected for START NEW CHART, the chart will be initialized per ACTION ON NEW CHART, and then the
chart is ready for trending. If the chart is not “rotating”, trend data recording is suspended, but “trend data collec-
tion” may continue. If it were collected, when the chart began to “rotate”, the collected data would be recorded
first, then the current real time data.
RTD TYPE - System Prompts - Configuration - Inputs - Page 4-4
Parameter that specifies the type of RTD: PT 100 ohm .00385 DIN, .00392 USA, .00392 SAMA, or NI 100 ohm.
SAMPLE PERIOD - System Prompts - Configuration - Process Variables - Page 4-37
Parameter that specifies the time period between samples for calculation of the rate of change of the Process
Variable for Rate Alarms. If the time between samples is too short, one second for example, a slight but quick
change may erroneously trigger the alarm. Conversely, too long of a period may delay the recognition of an
alarm condition. The period is dependent upon the application.
SCALE INTERVAL - System Prompts - Configuration - Recorders - Page 4-49
Parameters that specifies the number of divisions or rings between printed scale values. The values printed are
calculated by the instrument. If the SCALE INTERVAL parameter is zero, no scale values are printed, but the
RECORDER TAG will be printed. If the SCALE INTERVAL parameter value equals the number of divisions in the
zone, scale values will be printed at each end only.
Scale lines
Scale lines are printed as a series of dots, closely spaced to form a solid line, and are printed only in the area of
the chart (zone or portion of chart span) used for the respective trend line. The scale lines are printed on top of
major time lines. The number of scale lines printed on the chart is determined by the MAJOR TIME PERIODS
parameter, the number of BLANK MAJOR TIME PERIODS, and the number of trend lines being recorded. The
color of the scale line is the same as the respective trend line.
Scale values
The set of values printed next to the scale line which identify the engineering values corresponding to the respec-
tive rings on the chart, usually evenly spaced at multiples of 10 divisions or rings.
SELECT A COLOR - Chart Prompts - Chart Configuration - Page 6-8
A choice for MATCH/SELECT prompts which specifies that the corresponding time line, time, or date and chart
tag should always be printed in a fixed color. The color is selected at the next prompt.