Homa AL3PS Instruction Manual page 17

Input 1 (E1):
Switch-off electrode (1), switches off the pump
Input 2 (E2):
Switch-on electrode (2), switches on the pump, start of
the delay time for the alarm message. A delay time of 1
minute or 5 minutes can be selected here.
If the electrode is still occupied after the delay time has
elapsed, high water is signaled via alarm relay and beeper
with interval tone on/off. If the input is no longer occupied,
the alarm relay and beeper switch off.
The beeper can be acknowledged by pressing the key
(> 0.5 seconds) while high water is present.
The alarm relay remains energized until the high water le-
vel is undershot (input 2 no longer assigned).
LED
The LED indicates mains operation (on) and the program-
ming mode (flashing). When operating in battery mode,
the LED does not illuminate.
MAINS- BATTERY MODE
(battery available with connection kit as accessory)
When there is a mains failure (3 seconds of no power
supply), the equipment switches over to battery mode.
The alarm relay is switched on and the beeper gives an
intermittent tone.
The beeper can be acknowledged by pressing the button.
The alarm relay warning continues.
LOW POWER MODE (Only for Battery Mode)
If a mains failure is detected and the mains voltage does
not return within 60 minutes, the equipment switches
over to Low Power Mode. The beeper, the alarm relay and
the level measurement are switched off to protect the
battery from running flat. When the voltage returns, the
equipment continues to operate in mains mode and the
battery is charged.
If the equipment is switched on with no mains voltage and
where a battery is present, it switches directly into Low
Power Mode.
This is indicated by the beeper sounding several times. In
this case, all functions are locked until the device obtains
mains voltage.
To manually switch the device to low-power mode, the
key must be pressed when the device is disconnected
from the mains voltage and must remain pressed for at
least 5 seconds. A short beep indicates to the user the
transition to the low-power mode.
ISOLATED RELAY CONTACT
There are 2 options for issuing alarms through the alarm
relay. This may be programmed when switching on the
power supply using the button.
NO MODE = normally open (isolated relay contact open)
contact closes if there is a flood.
Detection signal for mains connection: beeps twice (con-
dition as supplied).
NC MODE = normally closed (isolated relay contact clo-
sed) contact opens if there is a flood.
Detection signal for mains connection: beeps once.
INITIALISATION AND PROGRAMMING MODE
When the device is connected to the mains supply, it goes
through an initialization phase. The jumper positions are
queried. After initialization, this function is disabled, i.e. a
change in the jumper position is not recognized until the
next time the supply voltage is applied.
The LED lights up and the programmed alarm relay status
is switched internally. The last programmed mode is sto-
red in an EEPROM and can only be changed in program-
ming mode.
NC-Mode:
Alarm relay is switched on, beeper sounds 1 time
(relay contact closed)
NO-Mode:
Alarm relay is switched off, beeper sounds 2 times
(relay contact open).
After 2 seconds, the device switches to programming
mode. This is indicated by the flashing LED and the alarm
relay is switched accordingly. The programming mode is
active for approx. 5 seconds. If the key is pressed within
this time and held down for 10 seconds, the device swit-
ches between the alarm modes.
The newly selected mode is indicated by the above beeper
tone sequence. The programming mode is automatically
extended for a further 5 seconds after each change. By
releasing the key and then pressing it again, the mode
can be adjusted as often as required. If no key is pressed,
the LED switches on permanently and the programming
mode is ended.
ATTENTION: The process takes place each time the supply vol
tage is switched on, even if a battery is connected. If
the device has switched to battery operation due to a
failure of the mains supply, the programming mode
also starts when the voltage returns. This is neces-
sary so that the device can be reprogrammed even
with an integrated battery.
ENGLISH | 17