FAAST FLEX Product Guide FAASTFLEX
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4.2 Relay Outputs
For all the versions of the FAAST FLEX single pole, changeover, unsupervised contacts for Fault, Alarm and
Action are provided for each channel. Alarm and Action relays are normally de-energized. They are switched
on by the unit command. See table below for more details.
Note: In case of power down, Faults are activated. On 2 Channel models, generic fault conditions
activate both channels relays.
Caution: Output channel status should be checked before powering any circuit served by the output
channel itself to avoid any position change due to either shipment or installation handling.
Table4-1: Relay Outputs
LED Set Condition Indications Meaning
ALARM 1 / 2 Alarm condition reached
LATCHED: Alarm reset sequence
from user
UNLATCHED: Alarm condition ended
ACTION 1 / 2 Action condition reached
LATCHED: Action reset sequence
from user
UNLATCHED: Action condition
ended
FAULT 1 / 2
One or more Fault
condition(s) involving
one or both channels are
recognized
LATCHED: Fault reset sequence
from user
i.e. Flow or sensor
communication faults
involve the
corresponding channel;
aspirator fault involves
both channels
UNLATCHED: Fault condition ended
4.3 GPI (General Purpose Input)
One GPI is provided.
4.3.1 OUT OF BOX configuration
In OUT OF BOX configuration, when a transition between normal state (open) and active state (short) is
detected, the device will perform a single device RESET. In OUT OF BOX configuration, only unbalanced
configuration is available.
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