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Model BB4000 Controller Instruction Manual
8.9. High Level Alarm - Function 18
When a Discrete Input programmed fro “High Level Alarm” is closed, the High Level indicator
will come on and the High Level Alarm relay contacts will close. This Function is for alarm and
indication only and will not affect pump operation. Also see Function 38.
8.10. Telemetry E - D - Functions 19 - 30
When the Discrete Input(s) programmed for “Telemetry E-D” are closed, no control Function
in the Controller is performed, only the status of the Discrete Inputs is placed in predetermined
Coils in SCADA Registers 40001 and 40008. These functions are used to assign any of the
available Discrete Inputs to a specific Coil. See Page 38.
8.11. Normal Pump Operation Disable - Function 31
When a Discrete Input programmed for “Normal Pump Operation Disable” is closed, all the
pumps are disabled (not allowed to run), the Fault indicator will come on, and Fault Code 15
will be generated. However, this Function does allow pump operation from Float Backup using
Functions 32 - 38, or Level Probe Backup using Parameters b.01 - b.07
This Function is used when it is required that a backup system have complete control of the
pumps. The Discrete Input must be connected to contracts that close when external logic deter-
mines that switching control of the pumps to the backup system is necessary.
8.12. Float Backup - Lower Level - Function 32
When a Discrete Input programmed for “Float Backup - Low Level” is closed, the Low Level
indicator will come on and the Low Level Alarm relay contacts will close. Also see Function 17.
Pump Down Mode (Parameter P.19 = 1)
All pump operation will be disabled when the “Float Backup - Low Level” input closes.
When the “Float Backup - Low Level” input opens, the “Pump Re-enable Delay”
(set using Parameter P.37) must expire before pump operation is allowed.
Pump Up Mode (Parameter P.19 = 2)
All available pumps will be called to run when the “Float Backup - Low Level” input
closes, assuming that the “Float Backup - Off Level” input is closed.
See Page 55.