SET (10)
OUT AL
E
E
E
OUT ALRM
N.O.
OUT ALRM
N.C.
LEVEL This function defines a pre-alarm status warning of the imminent finishing of
the product that is being dosed, and which is contained in the sampling tank.
The value to be entered must be calculated taking into account the litres or
gallons remaining between the level of the foot filter and the suction level of
the pump.
Fig. 27. Level pre-alarm.
If the pre-alarm is activated, the pump will
continue dosing but the symbol # (ALARM LEVEL
-
⎘"ALARMS) will appear on the display.
It is possible to set the type of level contact to N.O.
normally open or N.C. normally closed.
RESERVE
LEVEL PRE-ALARM
OUT AL This setting is used to manage the status of the alarm relay output contact.
The alarm can be enabled as a N.O. (normally open) or N.C. (normally closed)
contact.
Fig. 28. Out al menu
ALARMS This menu allows you to enable (EN) or disable (DI) the alarm relay output
contact; with the contact enabled, the relay output changes status in the
event of an alarm.
To connect the alarm signal cable ⎘ How to connect the pump.
The relay output can be set for the alarms shown in the table:
Table 7. Events connected to the alarm relay output contact
Alarm Event
LEV level end of product
PPM ppm exceeding of working frequency in PPM working mode
PERC percentage exceeding of working frequency in PERC working mode
MLQ mlq exceeding of working frequency in MLQ working mode
BATCH batch In BATCH working mode, a change of contact status interrupts dosing.
E
E
LEVEL
N.O. / N.C.
STOP LIT
00.001
SET (3)
LEVEL
OVERFLOW
Work frequency higher than that of the nameplate. Check the set data
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