EF315_r5.1(v12.22) – 03/2023 page 13
PAR. DESCRIPTION
MIN
VALUE
MAX
VALUE
DEFAULT
VALUE
SET
VALUE
P26 Flow Rate Pump 1 (pH) – see value on tables 0.2 L/h 50.0 L/h 8.6 L/h
P27 Autonomy Pump 1 (pH) – Litres up to maintenance 0 L 999 L 200 L
P28 Reset Litres P1 (pH) – Enter psw to reset 0 999 0
P29 Flow Rate Pump 2 (chlorine) – see value on tables 0.2 L/h 50.0 L/h 8.6 L/h
P30 Autonomy Pump 2 – Litres up to maintenance 0 L 999 L 200 L
P31 Password to reset autonomy of pump P2 (chlorine) 0 999 0
P32 LED POWER 0 1 0
P33 Display on 3rd line
Weight 1 = litre-counter
Weight 2 = working thresholds
3 0 0
P34 Telephone numbers 0 9 0
P35 Autoset (Restore Factory Settings) 0 999 0
Some parameters have double meaning, depending on the instrument configuration; see next
section for details.
MEANING OF PARAMETERS
PARAMETER 01 OPERATION PUMP 1 (pH)
Achieving the desired threshold can be done by simple ON-OFF control or proportional adjustment.
- ON-OFF control with output for electromagnetic pump: the pump works at constant rate (parameter
P05, pulses/minute) until the set threshold (parameter P03) is reached, and stops dosing when the
threshold is exceeded; the pump resumes operation when measurement deviates again from the
threshold value minus the non-intervention value (parameter P04, hysteresis).
- ON-OFF control with output for peristaltic pump: operation is the same described here above for the
magnet output, with the only difference in setting parameter P05, in which the pump rate is entered
as percent of operation.
- Proportional control with output for electromagnetic pump: in this case the working frequency
(pulses/minute) goes from zero (threshold reached) to the maximum value set in parameter P05
(dosing rate when measurement is far from the desired threshold more than the value of proportional
band set in P04). The frequency is automatically calculated by the micro-controller. With this type of
adjustment, the desired threshold is reached with a smoother trend with respect to the ON-OFF
operation. This setting is mandatory in case of PFM output.
- Proportional control with output for peristaltic pump: as in the previous case, the operation percentage
of the peristaltic pump automatically adapts to the threshold value to be achieved and proportional
band.
The diagrams on the next page show the different adjustments that can be set with parameters P01...P04
for output 1 (acid) and with parameters P08...P11 for output 2 (chlorine):
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