SIAD ESA E7014, Руководство пользователя

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E7014
21
1°stage gas
ignition type
Fixed
The period of 1
st
gas stage ignition is fixed. The device verifies the
flame formation only after the 1
st
safety time and after the ignition
transformer deactivation. This configuration is mandatory for unirod or
UV-scan flame detection systems.
Variable
The period of 1
st
gas stage ignition can be reduced. The device
verifies in continuous the flame formation and deactivates the ignition
transformer as soon as the flame is stabilized. This configuration can
be applied in case of flame detection systems with dedicated
electrode.
Automatic reset 0 ÷ 9
Maximum number of automatic resets accomplished automatically by
the flame supervisor without generation of a remote signal for burner’s
lockout. Setting to 0 this parameter, the function is disabled. In case
this function is enabled, the device comply only EN746-2.
The following table shows the maximum safety and reaction times allowed.
Make reference to the specific norm in order to define the proper parameters related to each industrial
application, adopting values that don’t compromise the process safety.
In case the setting parameters are not in compliance with EN298 but only with EN746-2, the ESTRO
identification plate reports only this norm.
.
APPLICATION NORM SAFETY TIME REACTION TIME REMARKS
GAS BURNERS
EN298 - Max. 1 s Restart and Respark allowed.
EN676
According the
application
max. 5 s
Max. 1 s According the application, only 1
Restart allowed.
“Prepurge” mode as claimed
EN746-2
According the
application
Max. 10 s
According the
application
Max. 2 s
According the application, one
Restart attempt in case of flame
missing signal, two automatic
unlocks and high temperature
operation are allowed.
“Prepurge” mode as claimed
OIL BURNERS
EN230
According the
application
Max. 20 s
Max. 1 s According the application Restart
and Respark allowed.
“Prepurge” mode as claimed
EN746-2
According the
application
Max. 10 s
According the
application
Max. 2 s
According the application, one
Restart attempt in case of flame
missing signal, two automatic
unlocks and high temperature
operation are allowed.
“Prepurge” mode as claimed