Function Blocks
STG Stage Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 367
2/07
STAGE tabs
It looks like this graphically. There are four stage tabs, each with the same entry fields. Select the tab for
each stage at the top of the dialog box.
HTable 109 describes the parameters and the value or selection for each stage.
Label
An 8 character label used to identify the specific stage output on the operate displays of the operator
interface.
Stage Types
There are four stage types from which to choose:
Pressure/Flow The stage block activates its output as the PV1 pressure input increases above the
ON setpoint and deactivates the output as the
PV2 flow input increases above its
setpoint.
Pump Down The stage block activates its output as the PV1 input rises (activate on rise) above
the ON setpoint.
Pump Up The stage block activates its output as the PV1 input falls (activate on fall) below the
ON setpoint
User Configured The user can select either PV for ON and OFF compare as well as the compare type
for their particular application (no restrictions).
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