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Rev 3 (XXXX 2019)
NOTE: this input/output is independent from the system, does not require any setup,
and will not trigger any warning into the system. In can be used together with both
analogue and contact probes.
OUTPUT LOGIC:
Active (24VDC OUT) when the fluid reaches the overfill probe
Inactive (0VDC OUT) when the fluid is below the contact probe.
Pump control output
This output allows controlling the compressed air supply to the pump associated with this
tank: when there is an active transaction that requires fluid from the tank, the pump is
supplied with compressed air in order to make it work; and when there is no active
transaction requiring fluid from this tank, the pump does not get any compressed air supply
and, therefore, is depressurized.
This helps to minimize compressed air leaks and reduces the physical stress of the pump.
OUTPUT LOGIC:
Fresh product
Active (24VDC OUT) while one or more FCU units (U-Valve, U-Meter, U-Count) physically
connected to the tank are performing a transaction, and at the same time, the level is not
below Stop contact level (S3) or while the unit is in bypass mode.
Inactive (0VDC OUT) when there is no transaction in any of the aforementioned units.
Waste oil
Active (0VDC OUT) when the fluid is below the contact probe.
Inactive (24VDC OUT) when the fluid is in touch with the Stop contact level (S3).
External alarm output
This output is intended to control an external (remote) flash indicator and/or warning buzzer.
It is controlled by the system's warning and stop levels (regardless of the type of probes
being used): if the warning level of stop level is triggered for this tank, this output becomes
active.
OUTPUT LOGIC:
Active (24VDC OUT) when the fluid reaches either the warning or stop level
Inactive (0VDC OUT) when the fluid is above (for fresh fluid tank) or beyond (for waste fluid
tank) the warning level.
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NexU INSTALLATION MANUAL
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