Emerson Rosemount 3051 Manual page 115

SPM Supported Blocks
1 AI or ISEL
2 PID or AO
3 PID or AO
4 AI or ISEL
• Block Tag - Must be a scheduled block. Otherwise the status will
stay in the inactive state. Block tag must be entered, there is no
pull down menu to select the tag.
• Block Type - Allows specific block types to be selected for the
corresponding Block Tag.
• Parameter Index - Allows specific parameter types to be selected
for the corresponding Block Type.
• User Command - Requires the user to select "Detect" when all
the parameters have been selected and monitoring is requested.
"Idle" is the default value, which is a waiting or unused state.
Thresholds
Are used to allow alerts to be seen in the status screen when the
values are beyond the threshold values that have been set for each
parameter.
• Mean Limit - Alert Limit value in +% change of the Mean
compared with the baseline mean value.
• High Variation - Alert Limit value in +% change of the Stdev
compared with the baseline Stdev value.
• Low Dynamics - Alert Limit value in -% change of the Stdev
compared with the baseline Stdev value.
Baseline Values
Are the calculated values from the process over the Learning Cycle.
• Mean - Calculated average of the process variable over the
Learning Cycle.
• Stdev - Calculated difference between minimum and maximum
values over the Learning Cycle.
Block Information
Supported Parameters
AI.OUT or ISEL.OUT
PID.OUT or AO.CAS_IN
PID.BKCAL_IN or AO.PV
AI.OUT or ISEL.OUT
Intended Use
Process Variable
Control Block
Output
Valve Position
2nd Process
Variable or
Redundant SPM1
value
C-21