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CONTRIVE • B14
88|
QBK
.EN
0219
7
www.contrive.it
001 – POWER SUPPLY VOLTAGE
Power supply voltage for this burner control device and loads (air and fuel valves
and ignition transformer) wired at terminal 01 and 02.
Short circuit and overload protection by internal fuse.
Optional safety interlock limits could be wired on the main supply phase.
002 – PROCESS INPUT VOLTAGE
Inputs coming from external control circuit are independent from the main power
supply of this device and loads, allowing a different voltage for control interface.
Inputs referred to a common return at terminal 18 and continuously verified
against possible failures, to guarantee a reliable operation.
The symbols shown near the terminal board are related to input function.
003 – BURNER TYPE
Selecting OIL type burner, the ignition device is switched on during the prepurge
to allow the detection of fuel leakage that will be ignited, leading to an illegal
flame detection. Electrode is not suitable for flame detection in OIL burners.
Shared rod configuration for OIL burners may damage the unit.
004 – INPUT TERMINAL 17
Input at terminal 17 can operate as a
2
nd
stage thermostat
ϑ
2 (to switch on/off the main burner), or
2
nd
stage burner flame surveillance input, or
enable the indirect flame control, disabling flame surveillance when the
temperature of furnace walls is above 750°C.
005 – AIR PRESSURE SWITCH RESPONSE TIME
The air pressure switch does not follow immediately the status of the air output.
This parameter defines the maximum tolerated delay between air output changes
and air pressure switch feedback.
101 – START-UP MODE
At power-on, once the self-test has been successfully completed, the unit waits in
STANDBY mode until a reset operation is performed from push button
, input or
through a fieldbus remote command. Setting AUTOSTART mode, the cycle starts
automatically, unless the units has been turned off while in lockout.
102 – AIR OUTPUT DURING POWER-ON & LOCKOUT
To suit different processes you can change the behavior of the air valve (or fan) at
power-on and while it is blocking.
It could be kept closed at all times, always open, controlled by P input at terminal
15 or via fieldbus command.
