After the alarm delay (10 s):
The buzzer lets out an alarm sound and the backlight of the display begins to flash.
The relays are switched to the alarm position. Both relays are de-energised in alarm and
fault situations (factory setting). The relays are of the failsafe type, which means that
they also enter the alarm state when operating power is lost.
The alarms can be divided into three groups: level, fault and maintenance alarms.
In a level alarm the sensor in the separator has detected that the liquid level being
monitored has reached the alarm limit (high liquid level, oil or sludge).
In a fault alarm the control unit has detected a fault in the sensor circuit. The monitoring
covers the communication between the control unit and sensor as well as short circuits
and breaks.
In a maintenance alarm the month counter has reached the limit value (1, 3, 6 or 12
months). This function is used as a factory setting.
7.2.
Resetting an alarm
An alarm can be reset by pressing the test button in the cover.
Resetting an alarm deactivates the buzzer. However, the buzzer is always reactivated for 10
s every 24 hours until the cause for the alarm is eliminated.
The relays do not change their state when an alarm is reset with the reset
button.
The operation of the buzzer and relays can be changed through the
browser-based user interface. See Section Using the browser-based user
interface.
7.3.
Using the browser-based user interface
The following sections describe the use of the idOil browser-based user interface.
The process of establishing a connection to the browser-based interface is
described in the section Commissioning through the browser-based
interface.
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