Oc: Current Overload Protection/Alarm (Overload Protection); Table 20: Ri Alarms - DAB E.Box Plus Instructions Pour L'installation Et La Maintenance

This protection can be activated by setting the parameter TB at a value other than zero.
The protection intervenes:
When the pressure falls to a value lower than the parameter MP (default 0.45bar) for a time equal to the parameter TB, the alarm is
•
activated with stopping of the pump and lighting of the led.
If the dry running factor for one of the pumps falls below this value during operation. For further information on the setting of SO, see
•
paragraphs 9.4.4 and 9.4.5.
After 1 minute there will be 1 reset attempt for maximum 30 seconds. If this attempt succeeds the alarm is reset, otherwise the pump will remain
in blocked status.
The dry running protection/alarm is not activated if the electropumps are started manually.
To solve the problem, check the hydraulic part of the plant. Check that everything is in order. Check also the pressure sensor and ensure the
pressure reading is regular.
- LK: Protection against too frequent starts
This error appears when the system needs more than 8 starts per pump per minute; this normally occurs when there are leaks in the system or
the expansion vessel is deflated.
The protection against rapid starts allows each pump a maximum number of 8 starts per minute.
The protection does not intervene if the number of starts per minute is less than 8.
To solve the problem, check whether there are any leaks and check the expansion vessel if present.

- OC: Current overload protection/alarm (overload protection)

This alarm appears in the event of a current overload on the pumps. The alarm is specific for the pump.
For each pump the current overload alarm allows 6 auto-reset attempts, every 10 minutes, in the space of 24 working hours. At the seventh
attempt the panel no longer makes auto-resets, unless after manual reset by the user. To solve this problem, check the pumps, the wiring, and
ensure the rated current of the pumps is set correctly. This error may be generated by a blocked pump.
- RI: RI alarms
These errors come from input R. The panel behaviour is different depending on the operating mode. The solution of the problem always
consists of checking the signal arriving from the input R.
Message
Pressure switch for maximum pressure
Maximum level float
Minimum level float
Minimum level probe
Maximum level probe
- NI: NI alarms
These errors come from input N. The panel behaviour is different depending on the operating mode. The solution of the problem always
consists of checking the signal arriving from the input N.
ENGLISH
This error appears in pressure boosting and indicates that the maximum pressure switch is
activated or that the contact R has not been jumpered. The E.Box stops the pumps.
This error appears in drainage and indicates that the maximum level float is activated or that
the contact R has been jumpered. The E.Box activates the pumps.
This error appears in filling and indicates that the minimum level float is activated or that the
contact R has been jumpered. The E.Box activates the pumps.
This error appears in filling and indicates that the level probe for minimum level is activated
or that the contact R has not been jumpered. The E.Box activates the pumps.
This error appears in drainage and indicates that the level probe for maximum level is
activated or that the contact R has been jumpered. The E.Box activates the pumps.

Table 20: RI alarms

114
Meaning and description