Samoa U-TANK 383 100 Guía De Servicio Técnico Y Recambio página 6

EN
INSTALLATION AND COMISSIONING
[2]. ANALOG (PRESSURE) PROBE INPUT
This input allows to connect an analog level probe in order
to get in real time an exact measurement of the fluid level
inside the tank. Currently, only barometric level probes
(Samoa code 382120) are supported.
The probe must be connected as follows (red to +24V,
black to IN, shield to GND; leaving +12V unconnected):
NOTE: analog and contact probes cannot be used
simultaneously into the same channel (tank).
[3] AND [6]. OVERFILL INPUT/OUTPUT
This input allows to connect a safety contact probe (float
type or equivalent). Only normally-closed (NC, the
electrical contact inside the probe must stay closed when
the fluid level is below the probe) switch-type probes can
be used.
This input, together with the overfill valve output, is meant
as a safety device to prevent overfilling the tank. By setting
the overfill probe at the maximum allowed fluid level
inside the tank (full tank level), it stops the fluid from
entering the tank as soon as the overfill level probe is
reached.
NOTE: this input/output is independent from the system,
does not require any setup, and will not trigger any
warning into the U-Track software. In can be used
together with both analog and contact probes.
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838 854 R. 06/20
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
OUTPUT LOGIC: Active (24Vdc OUT) when the fluid
reaches the overfill probe; Inactive (0V OUT) when the
fluid is below the contact probe.
NOTE: this input also triggers the external alarm output.
Although the overfill output is deactivated as soon as the
fluid drops below the overfill level, the alarm (and a
graphic indicator on the display) will stay active until the
"STOP" button is pressed.