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Model BB4000 Controller Instruction Manual
9.2. Low Level Alarm
Upon a Low Level Alarm, the indicator will come on and the relay contacts will
close.
A Low Level Alarm is delayed for 90 seconds after power is applied.
The Low Level Alarm relay contacts will be open when there is no power on the
controller.
The Low Level Alarm will be activated when the level is at or below the Low Level
Alarm level setting.
A Low Level float will activate the alarm. The Discrete Input used must be assigned
Function 17 or 32.
A Low Level from a Level Probe input will activate the alarm. See Parameter b.01.
The Low Level Alarm will not function as a redundant pump off, except for the Low
Level Alarm from Float Backup using a Discrete Input programmed for Function
32, which will turn off the pumps.
With the Level Input Source set for the Level Probe (Parameter F.19 = 2 or 3), if
not already on the Low Level Alarm will be activated when Electrode 10 is uncov-
ered, unless it is disabled using Parameter P.50.
Low Level Alarm operation may be disabled by setting Parameter P.50 = 0. This
disables Low Level Alarm operation from either the Analog Level Input (Parameter
F.19 = 1) or from a Level Probe (Parameter F.19 = 2 or 3). However, it will not
disable alarm operation from a Low Level float input using a Discrete Input (Func-
tion 17 or 32), or from the Backup Low Level Probe input (See Parameter b.01).
9.3. Power Indication
The Power indicator is normally on, but it will alternately flash with the Fault indicator, when the
All Pump Disable Discrete Input (Function 8) is closed. Fault Code Parameter FLC will also show
Fault Code 18.
9.4. Fault Indication
The Fault indicator shows when there is something wrong with the system, and that there is a
non-zero Fault Code present in Parameter FLC. Please see the Fault Code Table on Pages 25 -
26.
9.5. Fault Code - Parameter FLC
The current Fault Code may be viewed at Parameter FLC. Fault Codes 20-29 latch into memory
but are reset when the power is cycled, or may be reset by pressing the down push-button while
viewing the Fault Code. The Fault Code may also be reset remotely by setting Coil 31 in SCADA
Register 40002.
Содержание BB4000
Страница 58: ...52 Model BB4000 Controller Instruction Manual Return to Table of Contents 20 5 Connection Diagram Level Probe...
Страница 59: ...53 Model BB4000 Controller Instruction Manual Return to Table of Contents 20 6 Level Probe Placement and Setup...
Страница 61: ...55 Model BB4000 Controller Instruction Manual Return to Table of Contents 20 8 Float Backup Example Pump Down...
Страница 63: ...57 Model BB4000 Controller Instruction Manual Return to Table of Contents 20 9 Operator Interface...