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Siemens BACNET 125-5037 Owner's Manual page 44

Building technologies bacnet vav actuator
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Glossary
control loop
PID algorithm that is used to control an output that is based on a setpoint and an
input reading from a sensor.
DDC
Direct Digital Control.
DI
Digital Input. Physical input point that receives a two-state signal (ON/OFF,
OPEN/CLOSED, YES/NO).
DO
Digital Output. Physical output point that sends a two-state signal (ON/OFF,
OPEN/CLOSED, YES/NO).
English units
The foot-pound-second system of units for weights and measurements.
equipment controller
FLN device that provides additional point capacity to a field panel or provides
individual room or mechanical equipment control.
field panel
A device containing a microprocessor for centralized control of system components
and equipment controllers.
FLN
Field Level Network. Network consisting of equipment controllers, FLN end devices,
fume hoods, etc.
lps
Liters per Second.
loopout
Output of the control loop expressed as a percentage.
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Siemens Building Technologies, Inc.

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