E7014
5
ESA
EXP-2
AIR VALVE OR
BLOWER
THERMOSTAT
OPEN AIR
DAMPER
AIR PRESSURE
SWITCH
CLOSE AIR
DAMPER
DAMPER OPEN
POSITION SWITCH
DAMPER CLOSE
POSITION SWITCH
REGOLATION
ENABLED
ESA
EXP-3
PROFIBUS-DP
DEVICE-NET
ETHERNET
On its front panel ESA ESTRO mounts a programmable push button, an alphanumeric display of status
indication, a bargraph flame signal indicator and the infrared communication port for “on field”
instrument’s configuration.
Dedicated configuration software allows the definition of several operation parameters, according
process requirements, like the control of the air valve, the lockout output signal, the scheduled time for
each phase (according the ranges defined by the reference norms).
ESA ESTRO is provided with a solid case in thermosetting composition, ready to seat the ignition
transformer and the output wires for external connections.
Dedicated Expansion cards can be connected to each release of ESA ESTRO, in order to implement
additional features or specific serial communication modes. The installation of an expansion card into the
ESA ESTRO device obliges to install the ignition transformer into an external thermosetting case named
ESA TRAFO.
Hereinafter the expansion cards available are described according their main features:
• EXP-2: dedicated to “package burners” controls the air valve or blower start, verifies the air pressure
switch signal and operates the initial purging and burner ignition procedures.
Expansion card EXP-2 could be also adopted to simply operate the air valve (for device releases
different from ESTRO–A).
• EXP-3: developed to implement serial communication with the most common fieldbus standards.
For detailed information please refer to the technical bulletin E7015.
