Labkotec SandSET-1000 12 VDC, Инструкция по установке и эксплуатации

Страница: 6 / 13

SandSET-1000 12 VDC Sludge Alarm Device D15649_E-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 6/13 We reserve the right for changes without notice
3 OPERATION AND SETTINGS
The SandSET-1000 12 VDC alarm device is initialized at the factory.
The operation of the alarm device should be checked always after the
installation.
Functionality test 1. Immerse the sensor into water. The device should be in normal mode.
2. Lift the sensor up in air or sink it into sludge. Alarm LED indicator
should be lit in 10 seconds. When LED is on should relays de-energize
and buzzer be on after selected delay (5 or 30 sec). See chapter 3.1 for
more details.
3. Immerse the sensor back into water. Alarm LED should go off in 10
seconds. Relays and buzzer should go back to the normal state after
delay (5 or 30 sec). Clean up the sensor if necessary before placing it
back into the separator.
A more detailed description of the operation is provided in chapter 3.1.
If the operation is not as described here, check the factory settings
(chapter 3.2.) or contact a representative of the manufacturer.
3.1 Operation
The operation of a factory-initialized SandSET-1000 12 VDC is
described in this chapter.
Normal mode
– no alarms
The two heads of the SET/S2 sensor are totally immersed in water.
Mains LED indicator is on.
Other LED indicators are off.
Relays 1 and 2 are energized.
Alarm The two heads of the SET/S2 sensor are immersed in sludge or sand.
Mains LED indicator is on.
Alarm LED indicator is on in 10 sec. (Delay of the sensor.)
Buzzer is on after 30
…40 sec delay. (Delay of the control unit incl.)
Relays de-energize after 30
…40 sec delay.
(Note. The same alarm takes place when SET/S2 sensor is in the air.)
After removal of an alarm (the two heads of the sensor are in water), the
Alarm LED indicator will be off. Relays will be energized and buzzer will
be off after a delay of 30
…40 sec.
Fault alarm Sensor cable break, short circuit or a broken sensor, i.e. too low or too
high sensor signal current.
Mains LED indicator is on.
Sensor circuit Fault LED indicator is on after 5 sec delay.
Buzzer is on after 5 sec delay.
The relays de-energize after 5 sec delay.
Reset of an alarm When pressing the Reset push button.
Buzzer will go off.
Relay 1 energizes.
Relay 2 will stay de-energized until the actual alarm or fault is off.
The operational delay of SET/S2 prevents false alarms from occurring
when garbage or other obstacles, which weaken the measurement
signal momentarily, pass across the sensors heads.
Note! When testing the sensor operation in a separate vessel, the water
put into the vessel should stand for about 30 minutes before testing.
This prevents false alarms caused by the attachment of air bubbles on
the sensor heads.