SYSTEM STATUS
17
High Level Alarm
• Upon a High Level Alarm, the indicator will come on and the relay contacts will close.
• A High Level Alarm is delayed for ten seconds after power is applied.
• The High Level Alarm relay contacts will be closed when there is no power on the controller.
• The moment electrical power is applied to the controller, the High Level Alarm relay contacts open.
• The High Level Alarm relay contacts will close if there is a complete failure of the controller.
• The High Level Alarm will be activated as the level rises to or above the High Level Alarm level setting.
• A High Level float will activate the alarm. The Discrete Input used must be assigned Function 18 or 38.
• A High Level from a Level Probe input will activate the alarm. See Parameter b.07.
• With the Level Input Source set for the Level Probe (Parameter F.19 = 2 or 3), if not already on, the High
Level Alarm will be activated when Electrode 1 is covered with liquid.
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 uncovered, 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 (Function 17 or 32), or from the Backup Low Level Probe input (See Parameter b.01).
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 18 - 19.
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.
The Last Fault Code (Parameter LFC) is a copy of the last non-zero Fault Code that was present in Pa-
rameter FLC. Parameter LFC is reset when power is cycled, or may be reset by pressing the down push-
button while viewing the Last Fault Code. The Last Fault Code may also be reset remotely by setting Coil
31 in SCADA Register 40002.
Last Fault Code - Parameter LFC
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.
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