MSA MultiGard 5000, Руководство пользователя

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"Point Bypass Status:" - This is an array of 32 [16] indicators which show the point bypass. Any
point in green is not bypassed. Any point in red is bypassed and not sampling. Using this color
code, the operator can quickly see which points, if any, are currently being bypassed. In the
MultiGard 5000 24 [8] point system sample points 25-32 [9-16] are permanently bypassed.
"Combustible Level Exceeded – Purging System Lines" - This indicator only appears when the
system determines that a purge is required on the indicated point. This feature is only applicable
when the purge operation has been factory configured for MSA's catalytic combustible sensor. This
indicator refers to the sample point number shown in the “Active Sample Point:” indicator. This
indicator stays visible for the duration of the purge.
"Extended Analysis Time on Active Point" - This indicator only appears when any of the extended
analysis triggers discussed in section 3.4, are active for any sensor on the current sample point. This
indicator also refers to the sample point number shown in the “Active Sample Point:” indicator.
"Stepping Mode: Automatic" - This is a push button that switches the sequencer between automatic
and manual modes. When button is pressed to enter manual mode, the button turns red and flashes "
Stepping Mode: Manual” and a 15 minute time-out timer starts. At the end of the time-out timer, the
system will automatically return to automatic mode.
"Active Sample Point:" - This indicator shows sample valve the sequencer is currently sampling. It
is active in both automatic and manual modes.
"Step to Next Point" - This is a push button that steps the sequencer when in the manual mode. It is
not operational in the automatic mode.
"Actual Dwell Time:" - This indicator shows the actual dwell time for the current point number. See
Section 3.5 for a complete description of the dwell time calculation. This indicator shows the time in
seconds.
"Actual Point Pattern" - This is an HMI navigation button which changes the screen to view the
Actual Point Pattern currently being executed by the sequencer.
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Dual MultiGard 5000 Systems
There are two Actual Point Pattern touch-buttons on the dual MultiGard 5000s; System A and
System B.
"Overview" - This is an HMI navigation button which switches the screen back to the Overview.
4.1.7
Actual Point Pattern
The Actual Point Pattern screen shows the current pattern (or order) in which the physical sample
valves are being opened by the sequencer. It is the combined result of the Point Order setup and
Point Bypass setup screens described in sections 4.2.8 and 4.2.7, respectively. Any sequencer step(s)
containing a point number zero in the Point Order setup screen is (are) eliminated in the Actual Point
Pattern. In addition, any point(s) bypassed on the Point Bypass setup screen is (are) also eliminated
in the Actual Point Pattern.