118
A p p e n d i x I
Concurrent
transducer low, off
float, and high float
conditions
• Transducer fault
alarm
• Low well alarm
• High well alarm
All pumps on
Control switches to float inputs. Low well,
high well, and transducer fault alarms are
generated. All pumps are staggered on. Low
and high well alarms clear if the transducer
and the High float return to normal. However,
the transducer fault alarm remains active and
control remains with floats until the TCU has
been reset.
Transducer high
condition
High well alarm
All pumps on
Control remains with the transducer. All
pumps are staggered on. A transducer fault is
not generated unless the analog input reaches
maximum (20 mA or 5 VDC). When the
high transducer condition clears, the high
well alarm clears and normal pump operation
resumes.
Concurrent
transducer high
and high float
conditions
High well alarm
All pumps on
Control remains with transducer. A high well
alarm is generated. All pumps are staggered
on. A transducer fault is not generated if
events occur in the following sequence:
transducer high condition precedes high
float condition; and High float clears prior to
tranducer returning to normal range. When
high conditions clear, normal pump operation
resumes.
High float condition
and Off float is off
(with high float
override option
disabled)
• Transducer fault
alarm
• High well alarm
All pumps on/off
Control switches to float inputs. High well
and transducer fault alarms are generated. All
pumps are staggered on and then shut off after
minimum pump run time, even if the High
float remains on. High float transitions do not
restart pumps. If Off/Lead float activity does
not occur, the TCU will not start the pumps
until a reset clears the transducer fault.
High float condition
and Off float is off
(with high float
override option
disabled)
• Transducer fault
alarm
• High well alarm
All pumps on
Control switches to float inputs. High well
and transducer fault alarms are generated. All
pumps are staggered on and remain on if the
High float remains true. High float transitions
re-start pumps and minimum pump run and
off timers are applied. The high well alarm
clears if the High float turns off. However,
the transducer fault alarm remains active and
control remains on floats until the TCU has
been reset.
Low float condition
(with low float
option enabled)
• Transducer fault
alarm
• Low well alarm
All pumps off
Control switches to float inputs. Transducer
fault and low well alarms are generated. The
Low float takes precedence, and all pumps are
turned off. Pumps remain off while the Low
float is off. If Off/Lead float activity does not
occur, the TCU will not start the pumps until a
reset clears the transducer fault.
Содержание TCU800
Страница 1: ...Installation and Operation Manual T C U 8 0 0 Data Flow Systems Inc P r e l i m i n a r y ...
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Страница 4: ...D a t a F l o w S y s t e m s I n c Intentionally left blank ...
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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 ...
Страница 157: ...147 D a t a F l o w S y s t e m s I n c ...
Страница 158: ...148 D a t a F l o w S y s t e m s I n c ...
Страница 159: ...149 D a t a F l o w S y s t e m s I n c ...
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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 ...