ProSoft Technology MVI56-AFC - Manual (Page 47)

MVI56-AFC ♦ ControlLogix Platform Meter Proving
Liquid and Gas Flow Computer User Manual
ProSoft Technology, Inc. Page 47 of 316
February 25, 2011
4.1.3 Run Counts
Runs per prove (65012)
The total number of completed runs that constitute a single prove. This value
must be at least 2 and must not exceed 8. If Maximum attempted runs before
abort (register 65014) is non-zero, this value must not exceed that value.
Runs per prove, selected
The total number of completed runs to be selected for contribution to the prove
calculations. This value must be at least 2 and not exceed Runs per prove,
(register 65012). This value is automatically updated when you edit the Runs per
prove field.
Maximum attempted runs before abort (65014)
The total number of runs to be attempted before abandoning a prove as
incomplete, which permits an automatic proving sequence to automatically
terminate itself under exceptionally variable conditions. If this value is zero, no
limit is imposed. Otherwise, the value must be at least as large as Runs per
prove, (register 65012) and must not exceed 65535.
4.1.4 Run Input Setup
Minimum pulses per run (thousands) (65016)
The minimum number of pulses required for a run to be considered for
contribution to the prove, represented in thousands. This value must lie between
10 (representing 10,000 pulses) and 1000 (representing 1,000,000 pulses). Runs
counting 10,000 pulses or more have sufficient precision to enable calculation of
4-digit meter factors. For all prover types except compact SVPs, the AFC rejects
any LVP run that does not meet this condition. Since SVPs can deliver fractional
pulse counts that provide sufficient precision with only a small number of pulses,
the AFC does not impose this limitation on prover calculation using SVPs.
Maximum seconds per run (65017)
This parameter is a timeout for the duration of a run. A timer is started when the
run is started, and if the timer value equals or exceeds this value before the run
is completed, then the AFC automatically cancels the run. This allows an
automatic prove to recover from conditions that put the AFC and the proving
hardware out of step, such as a missed switch signal. This value must lie
between 0 and 10000, where zero means that no timeout is imposed.