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The TPI example below shows the controller programmed with six inputs:
• AC Input module- hook signals (hook isolation) for dispenser 1-2, 3-4 unleaded.
• 4-20mA- LS500 line leak transducer (requirement for Electronic Line Leak Detection (ELLD))
•
Provides ability to energize turbine for testing and disable turbine in event of ELLD
alarm (positive shutdown)
• 2-Wire Sensor module- 2 wire sensors located in unleaded STP (sump) and
dispenser sump 1-2,3-4
•
Sensor inputs programmed as inputs to a STP utilizing TPI will disable the submersible
in the event of an alarm and reenable once alarm clears (positive shutdown)
•
3-wires sensors- can be used in same manner as 2-wire sensors but will disable
the submersible for any of the various alarms associated with a 3-wires sensor. An
Individual alarm such as product, cannot be isolated for positive shutdown. Alarm
specific shutdown with 3-wire sensors will be discussed in the section on Logic
conditions.
NOTE: ELLD is not mandatory for this feature to work.
Summary of Contents for EVO Series
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