5.6.3 Level function with 4 level signallers
Logical function
The four-stage level function is checked for logical
function. If the [--] Low flow contact and the [+]
Maximum level are active, an error message is
output.
Four-stage level function with the functions
n
[--] low flow contact
n
[-] minimum level
n
[+] maximum level
n
[++] alarm level
With this version, 4 switching points are monitored. Suitable ProMi‐
nent
®
level switches must be used here (part number 1019244
single weight // 1031592 level switch, 1-stage, with PVDF/PE 5 m
fixed cable). The
[--] contact switches the circulating pump off to
protect against
‘Dry running’ , if the [--] contact is no longer con‐
nected, then the circulating pump automatically restarts. If a
[--] low
flow contact alarm occurs during backwashing, then the back‐
washing stops. However the backwashing is not continued until
completed, rather backwashing is started later by the normal filter
program. If the
[-] contact is activated, the top-up water solenoid
valve is opened to make-up the missing swimming pool water. The
level switching point
[+] contact closes the top-up water solenoid
valve, while if the
[++] contact is reached, an alarm message is
output. If the
[++] contact is activated during a standstill,
[Circulating operation pause], of the circulating pump, then the cir‐
culating pump switches on automatically, to transport the high
water produced by the wave process back into the swimming pool
before it flows into the drain via the overflow. If another paddle
switch is connected, that prevents running dry of the circulating
pump during a standstill, then this must be connected to the
[K01]
digital input.
Connection interfaces of the level switches
n
[--] contact to [K02]
n
[-] contact to [K03]
n
[+] contact to [K04]
n
[++] contact to [K05]
5.7 Sample water valve: On/Off
If the sample water pump is controlled or a solenoid valve inte‐
grated in a free outlet, then this function
[Sample water valve: On/Off] switches the corresponding compo‐
nent
[On/Off]. During standstill of the circulation (pause or back‐
washing), a solenoid valve or a sample water pump in the sample
water line must prevent flow of the swimming pool water, because
otherwise the swimming pool can run dry. The solenoid valve
closes, if no mains voltage is present at the terminals
[P3] or [P6 ].
A1252
Fig. 15: Level switch
Application examples for the F module functions
23