7.2 Relays
Use this screen to start a relay when a sensor is in an alarm condition.
Select between the internal relays or the external relays on the MagLink I/O or the OM4 relays (for LX Plus
only). The external relays must first be configured in the S y s t e m S e t t i n g s > S i t e I n f o menu).
Select the sensor alarm that will start the relay:
The table below shows the warnings/alarms that will be caused by the different FMS smart sensors:
Sensor
part
number
Description
Warning/Alarm message generated on console
30-0232-
DH-10
Discriminating Dispenser sump sensor
No link
Open
Short
High (when sensor detects hydrocarbons)
Liquid warning (when bottom float lifts in liquid)
High liquid (when top float lifts in liquid)
30-0232-
DH-20
Discriminating STP sump sensor
30-0236-
LW
Discriminating interstitial sensor
(optical)
No link
Water (when sensor detects water)
High liquid (when sensor detects any liquid other than water)
30-0234-
HW-
06/15/20
Hydrocarbon liquid sensor with water
indicator (6, 15, 24 ft lengths)
No link
Open
Short
Water (when sensor detects water)
High liquid (when sensor detects hydrocarbons)
M2051_r4 MagLink LX 4 and LX Plus Configuration Manual | Dover Fueling Solutions 53
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