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Function Blocks
STG Stage Function Block
368
HC900 Hybrid Control Designer Function Block Reference Guide
Revision 11
2/07
Presets
The Stage type selection pre-assigns inputs and Hi/Lo setpoint comparisons as indicated in
H
Table 108.
These cannot be altered. The User-configurable type may be used to custom assign PV inputs and setpoint
comparison types.
Table 108 Default PV sources and compare type operators
Stage Type
PV_ON =
PV_OFF =
Compare Operator
between
PV ON and SP ON
Compare Operator
between
PV OFF and SP OFF
Pressure / Flow
PV1*
PV2*
PV ON > SP ON*
PV OFF> SP OFF*
Pump Down
PV1*
PV1*
PV ON > SP ON*
PV OFF< SP OFF*
Pump Up
PV1*
PV1*
PV ON < SP ON*
PV OFF> SP OFF*
User Configurable
PV1 or PV2
PV1 or PV2
Select from:
PV ON > SP ON
PV ON
≥
SP ON
PV ON < SP ON
PV ON
≤
SP ON
PV ON = SP ON
Select from:
PV OFF > SP OFF
PV OFF
≥
SP OFF
PV OFF < SP OFF
PV OFF
≤
SP OFF
PV OFF = SP OFF
*Default – cannot be changed
Содержание HC900
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