West Control Solutions MRC 9000 - Manual (Page 305)

Appendix C Edition 3
Rev G C-10
Prompt
A message that is displayed in the upper line, while a prompt section name or parameter (value, choice, or text) is
displayed in the lower line. During normal operation, the instrument is either displaying a value(s), a message, or
a prompt.
Prompt section
A general term for a group of prompts, such as Display Prompts, Configuration, or Inputs.
PULSE EVERY - System Prompts - Configuration - Totalizers - Page 4-60
Parameter used to specify the number of incremental units between each output pulse. See PULSED OUTPUT.
PULSED OUTPUT (Relays) - System Prompts - Configuration - Relays - Page 4-66
One of the choices for RELAY x USAGE which specifies that the relay will be energized momentarily (about 60
milliseconds), typically used in conjunction with a totalizer pulsed output.
PULSED OUTPUT (Totals) - System Prompts - Configuration - Totalizers - Page 4-60
Parameter used to specify whether a pulsed output is configured, which generates a “contact closure” each time
the total reaches a multiple of the PULSE EVERY value.
PULSES - System Prompts - Configuration - Totalizers - Page 4-54
One total time base, making the totalizer a transition counter, counting the number of times the value makes a
transition from zero.
RANGE LIMIT HIGH/LOW - System Prompts - Configuration - Inputs - Page 4-9
Parameters that specify the normal engineering unit conversion range on inputs other than TC and RTD types and
provide values for the “out-of-range” testing. The RANGE LIMIT HIGH (LOW) value corresponds to the engineer-
ing unit value when the analog input is at the respective INPUT RANGE HIGH (LOW) value. If the resultant IV
(Input Value) is 5% above the high value or below the low value, the unit will drive the corresponding IV to +99999
or -99999, depending upon whether UPSCALE or DOWNSCALE was selected for SENSOR BREAK. The input
value will also be “flagged” as being in error. If the 5% allowed is insufficient for a particular application, the band
can be widened by widening the INPUT RANGE and RANGE LIMIT values. RANGE LIMIT HIGH/LOW are not
needed for the conversion of TC and RTD input types, but are included for the “out-of-range” testing. When the
INPUT TYPE is changed to TC or RTD, or when the TC TYPE or RTD TYPE is changed, the high and low values
will be set to the limits of the respective input, after which they may be modified.
Rate alarm hysteresis - System Prompts - Configuration - Process Variables - Page 4-37
When the ALARM TYPE selected is RATE RAISING or FALLING, hysteresis applies to the rate of change. For
example, for an alarm setpoint of 10 degrees C/MIN, HYSTERESIS of 1 degree C/MIN, the unit will alarm at 10
degrees C/MIN, and reset the alarm at 9 degrees C/MIN (RATE RISING), and alarm at 10 degrees C/MIN, and
reset the alarm at 11 degrees C/MIN (RATE FALLING)..
RECORDER
In this instrument, RECORDER applies to an entity that provides the trend recording function on one of the four
pens. Each RECORDER is not inherently associated with any particular input, process variable, pen or color, but
rather is fully configurable to work with any of these.
RECORDERS - System Prompts - Configuration - Page 4-43
Prompts section that configures recording method, scales, zones, colors, etc., for each RECORDER.
RECORDING METHOD - System Prompts - Configuration - Recorders - Page 4-46
Parameter specifying one of five methods of trend recording: INSTANTANEOUS VALUES, CONNECT THE
VALUES, DRAG - MIN TO MAX, AVERAGE VALUES, and CONNECT THE AVERAGES.
RELAY ACTUATOR - System Prompts - Configuration - Relays - Page 4-67
Parameter that selects an actuator, which, when true, causes the specified relay, 1-8, to be energized.