146
Glossary
alternation
Pumps configured for alternation take turns acting as lead. This shares the work of pumping over time.
bias voltage
Voltage used to bias (or hold) an input in the ON state. Absence of the voltage forces the input in the
OFF
state.
configure
Choosing the operating conditions of the station from a menu.
external
External equipment, devices, etc. outside of the TCU.
failure mode
Failure conditions displayed in the Alarm display mode of the TAC Pack TCU’s LCD.
flow volume
Well or tank volume between the Off level and the Lead level configured in the TCU. This setting is
used in the derived flow calculation.
ground
Zero-voltage reference point of a circuit. May be connected to earth ground or used as a common
connection
point.
Input
Inputs to the TCU consist of 3 phase monitor inputs, 6 telemetry inputs, and 12 digital monitor inputs.
input common
Point where multiple input circuits are terminated.
LCD
Liquid-crystal display used to display messages.
LED
Light-emitting diode used to indicate an on/off condition.
line
Input side of switch or relay contacts.
load
Output side of switch or relay contacts.
neutral
Zero reference point of an AC voltage.
output
Digital control output of the TCU.
override
Control output logic is ignored and the output is set to a specific state.
pump mode
Selected method of pumping for either a well (pump down) or storage tank (pump up).
return
The circuit wire or terminal that completes the circuit path back to ground or neutral.
set points
Those points configured in a station using an analog transducer to simulate the the function of float
switches. Pseudo levels corresponding to the desired levels for starting or stopping pumps and for
turning on level alarms are set in the user interface.
source
Electric power supply. Provides voltage, AC or dc, for use in input/output circuits.
staging levels
Levels in a well or tank at which an action (pump start or stop, or alarm activation) occurs.
telemetry
Communication system used to monitor and control a remote unit or units from a central site.
total flow
The Total Flow value is based on the time it takes to fill the flow volume (above). This derived flow is
used to meter the calculate the flow rate and total flow volume.
Содержание TCU800
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Страница 49: ...39 S e t u p Externally Powered Non submersible Transducer TCU Powered Non submersible Transducer ...
Страница 56: ...46 C h a p t e r 5 Quick View Analog View Pump Statistics ...
Страница 57: ...47 U s e r I n t e r f a c e Alarms Settings Screen 1 Settings Screen 2 ...
Страница 58: ...48 C h a p t e r 5 Advanced Settings About ...
Страница 77: ...67 O p e r a t i n g P r o c e d u r e s TCU Installed in Existing Control Panel ...
Страница 87: ...77 M o d b u s S u p p o r t Figure 1 Figure 2 Figure 3 ...
Страница 92: ...82 D a t a F l o w S y s t e m s I n c Appendix ...
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Страница 161: ...151 D a t a F l o w S y s t e m s I n c ...
Страница 162: ...Data Flow Systems Inc 605 N John Rodes Blvd Melbourne Florida 32934 321 259 5009 www dataflowsys com ...