Note: the function with 3 floats is used in installations with deep narrow tanks that do not allow an ample
travel of the floats!
Note: in the E.box version with display, the correct number of floats or level probes used is displayed
automatically.
Operation with depth sensor and display
If a depth sensor is being used, with an E.box with display, it will be possible to set independently the starting level of
pump P1, of pump P2, and the stopping level of both. In particular:
HA is the stopping level of the pumps P1 and P2
HB is the starting level of pump P1
HC is the starting level of pump P2
It will also be possible to set the alarm levels for maximum and minimum level.
Operation with depth sensor without display
In operation with a depth sensor, the parameters must be set with the Trimmers SP and DP, see Figure 42.
SP represents the maximum level in the tank (L
DP represents the minimum level in the tank (L
DP is expressed as a percentage of SP.
If the level in the tank is the same as or higher than SP, the pump P1 is started and, if the level continues to rise,
pump P2 is also started after a delay of 4 seconds.
When level DP is reached, both pumps stop.
The following table sums up the behaviour described:
P1
Pump P1 = started for at least 4 seconds and
P2
Maximum Alarm
P2 = ON
P1 = ON
P1 + P2 = OFF
Minimum Alarm
Drainage with depth sensor, without display
STARTING
Tank level >=> SP
tank => SP
Table 10: Drainage with depth sensor, without display
ML
HC
HB
HA
LL
Figure 43: Drainage with a depth sensor
E.box with display
ENGLISH
) that you want the water to reach during normal operation.
MAX
) that you want the water to reach during normal operation.
MIN
SP
DP
E.box without display
99
STOPPING
Tank level = DP
Tank level = DP
P1 + P2 =
P1 + P2 =