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CONTRIVE • B14

88|

QBK

.EN

0219

www.contrive.it

SINGLE STAGE BURNER

Turn ON/OFF the burner by means of thermostat input at terminal 16 or through remote fieldbus command.

A flame simulation test is carried out during pre-purge.

Air simulation test is carried out before to activate the air output [VA] if enabled.

The fuel valve

[V1]

will be activated only if the ignition device is detected during pre-ignition time.

The fuel valve remains open during the programmed 1

safety time, if a valid flame signal is detected within the

safety time the valve is kept open: the burner is on and after the pilot proving time the contact at terminals 11 will

be closed (burner on).

If no flame is detected the system will lockout and contact at terminals 12 will be closed (lockout).

In accordance with EN746

-2 and E

N676, up to 4 ignition attempts are allowed if the safety is not impaired.

Push the front panel button or

activate the input at terminal 14 to reset from lockout (will take place at release).

Flame quenching during burner operation will force the system to lockout, recycle or ignition restoration.

To put the burner out of service (manual shutdown) push the front panel button during the operating cycle.

A post-combustion time (max 20 seconds) is allowed after a lockout or shutdown request, followed by post-purge.

The

air output [VA]

behavior is configurable for each cycle step, providing also cooling and purging processes; this

output

is monitored through the low air pressure switch [A].

UV sensor or ionization rod can be used for flame detection.

It’s possible to share a single rod for ignition and flame detection using special ignition transformers.

EXTERNAL LIMITS

RESET INPUT

LOW AIR PRESSURE SWITCH

AIR CONTROL INPUT

AIR VALVE

ON/OFF THERMOSTAT INPUT

PILOT GAS VALVE

BURNER ON

DUAL ROD CIRCUIT

BURNER LOCKOUT

UV SENSOR

MAKE JUMPER A1

-A2 WHEN

LOW AIR PRESSURE SWITCH

IS NOT INSTALLED

SINGLE ROD CIRCUIT

ALL SAFETY SWITCHES SHOULD BE APPROVED AS LIMIT CONTROLS

THE USE OF ELECTRONIC SWITCHES MAY CAUSE ERRATIC OPERATIONS

Summary of Contents for QBK

Page 1: ...ices The device is not user serviceable a faulty device must be put out of order and sent back for servicing CONTRIVE manufactures products used as components in a wide variety of industrial systems and equipment The selection and application of products remain the responsibility of the equipment manufacturer or end user CONTRIVE accepts no responsibility for the way its products are incorporated ...

Page 2: ... you have received the wrong model or the device does not function properly contact your supplier FRONT PANEL INTERNAL FITTING SCREWS 1 8 MAIN TERMINAL BOARD FLAME SIGNAL BARGRAPH RED 2 9 POWER SUPPLY FUSE 1 STATUS DISPLAY 3 10 INPUT OUTPUT TERMINAL BOARD RESET SHUTOFF BUTTON 4 11 INPUT VOLTAGE SPECIFICATION COM INDICATOR YELLOW 5 1 ULTIMATE PROTECTION AGAINST DANGEROUS CONDITIONS BY MEANS OF INTE...

Page 3: ...IDING LOOPS AND KEEP ALL OTHER CABLES ESPECIALLY THOSE OF UV SCANNER OR IONIZATION ROD AS FAR APART AS POSSIBLE THE AIR OUTPUT A3 IS SUITABLE TO CONTROL VALVES OR FAN MOTOR WITHIN THE MAX RATED CONTACT CURRENT ADD AN EXTERNAL CONTACTOR IF NECESSARY AIR FUEL VALVES AND IGNITION TRANSFORMER OUTPUTS ARE PROTECTED BY INTERNAL FUSE THIS FUSE MUST BE REPLACED ONLY WITH SAME TYPE AND VALUE COMPONENT 3A Q...

Page 4: ...ITH INTERRUPTED PILOT AIR PRESSURE WAITING WAITING FOR RATED AIR PRESSURE BEFORE TO CONTINUE WITH PREPURGE POSTCOMBUSTION WAITING FOR FLAME QUENCHING AFTER LOCKOUT OR SHUTDOWN REQUEST PREPURGE PURGE OF COMBUSTION CHAMBER OR MIN TIME FOR ILLEGAL FLAME PROVING POSTPURGE PURGE OF COMBUSTION CHAMBER SHOWN TOGETHER WITH ASSOCIATED CODE LOCKOUTS STANDBY WAITING FOR RESET WHEN PROGRAMMED FOR STANDBY MODE...

Page 5: ...S RELEASED 1 A PREMANENT FAILURE TO THE RELAY CONTACT MAY CAUSE THE MAIN FUSE TO BLOWN AS A SAFETY MEASURE TO PREVENT DANGEROUS CONDITIONS IN SUCH CASE THE UNIT MUST BE RETURNED TO FACTORY FOR SERVICING FLAME SIGNAL BARGRAPH The flame signal strength detected by the sensor connected at terminal 10 is reported by means of 10 led bargaph Full scale 100 is corresponding to a flame signal of 30 µA app...

Page 6: ...ION TIME 1 0 5 402 FIRST SAFETY TIME 2 02 DEFAULT 3 25 25 403 PILOT BURNER STARTUP ATTEMPTS 1 1 2 2 3 3 4 4 404 PILOT BURNER FLAME SENSITIVITY 1 µA 1 USED ALSO FOR DETECTION IN PREPURGE 9 µA 9 BEHAVIOR DURING OPERATION 501 PILOT BURNER PROVING PERIOD 1 01 DEFAULT 3 25 25 502 SECOND SAFETY TIME NO MAIN 0 1 1 5 5 INTERMITTENT PILOT C PILOT REMAINS ACTIVE 503 MAIN BURNER FLAME SENSITIVITY 1 µA 1 9 µA...

Page 7: ...tion 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 2nd stage thermostat ϑ2 to switch on off the main burner or 2nd 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 ...

Page 8: ... the air pressure is detected 302 AIR OUTPUT DURING PREPURGE To suit different processes you can change the behavior of the air valve or fan output during pre purge or waiting time Air output could be active or inactive 303 PREPURGE TIME EN298 3 124 1 3 124 2 3 124 3 3 124 4 Set pre purge time in forced draught burners according to applicable and relevant standards EN 676 During this time the flam...

Page 9: ... 3 132 3 133 The setting of safety time is to be determined on the basis of burner capacity and relevant application standard e g EN 746 2 EN 676 NFPA 85 or NFPA 86 V2 switched on when the safety time starts V1 is switched off at the end of safety time interrupted unless selected for intermittent operation remains active 503 MAIN BURNER FLAME SENSITIVITY EN298 3 107 The minimum detectable flame si...

Page 10: ...nd will be ignored until minimum combustion time has elapsed 509 ALLOWED POST COMBUSTION TIME Flame signal allowed for 20 once fuel valves has been closed Lockout occurs when the flame is detected after this post combustion time Useful when fuel valves are distant from the burner 601 AIR OUTPUT DURING POSTPURGE To suit different processes you can change the behavior of the air valve or fan output ...

Page 11: ...OPERATION PURGE 0 0 1 0 0 2 0 0 3 0 0 4 0 0 5 1 0 1 1 0 2 2 0 1 2 0 2 3 0 1 3 0 2 3 0 3 4 0 2 4 0 3 4 0 4 5 0 1 5 0 2 5 0 3 5 0 4 5 0 5 5 0 6 5 0 7 5 0 8 6 0 1 6 0 2 QBK 2 2 G T 01 A N 000 N 000 N 001 03 1 2 03 C 2 L 01 N L 00 N 000 Q B K A L U M I N I U M Q P K P L A S T I C S U P P L Y 2 3 0 V A C I N P U T S 2 3 0 V A C F U E L G A S T H E R M O S T A T 2 A I R R E S P O N S E T I M E 1 A U T O...

Page 12: ...THERMOSTAT 1 OR FIELDBUS COMMAND WILL TURN OFF THE BURNER WAITING FOR ALLOWED POSTCOMBUSTION AND OPTIONAL POSTPURGE AN OPTIONAL ADJUSTABLE MINIMUM COMBUSTION TIME ENSURES THAT THE BURNER BURNS FOR A DEFINED PERIOD EVEN IF THE THERMOSTAT 1 IS SWITCHED OFF OR AN HALT COMMAND IS RECEIVED THROUGH FIELDBUS BEFOREHAND FIRING SYSTEMS OPERATING ABOVE 750 C ARE CONSIDERED TO BE HIGH TEMPERATURE EQUIPMENT S...

Page 13: ...ivate the input at terminal 14 to reset from lockout will take place at release Flame quenching during burner operation will force the system to lockout recycle or ignition restoration To put the burner out of service manual shutdown push the front panel button during the operating cycle A post combustion time max 20 seconds is allowed after a lockout or shutdown request followed by post purge The...

Page 14: ...EPENDENT SENSORS SHARES THE SAME FLAME AMPLIFIER INPUT THE MAIN FLAME SENSOR SHALL BE SO POSITIONED THAT IT CANNOT IN ANY CIRCUMSTANCES DETECT THE PILOT FLAME Both UV detector or ionization rod can be used for pilot and main burner Once the pilot burner has started up the main burner can be controlled by means of thermostat input at terminal 17 or through fieldbus command Turning off the main burn...

Page 15: ...fuel valve is closed Pilot burner flame signal strength reported when only the pilot flame is detected WARNING The flame sensor wired at terminal 17 must be certified for permanent operation if the main burner remains operative longer than 24 hours Using a standard flame relay i e our FREY the main burner must be turned off within 24 hours of continuous operation non permanent operation of main bu...

Page 16: ...ls 11 will be closed If no flame is detected the system will lockout and contact at terminals 12 will be closed lockout Push the front panel button or activate the input at terminal 14 to reset from lockout will take place at release 2nd stage burner control by means of Thermostat2 input at terminal 17 Flame quenching during burner operation will force the system to lockout recycle or ignition res...

Page 17: ...safety time when the high temperature mode is active Flame simulation is not verified during pre purge and the ignition transformer is not energized no ignition spark generated in order to provide reliable operation for flameless burners The only reason to activate high temperature mode is to improve system availability ignoring false flame detection that may occur at high temperatures UV sensor o...

Page 18: ... 40 ms ANSWER 150ms 80 ms 40 ms 20 ms OVERALL 340 ms 200 ms 120 ms 80 ms POLLING TIME FOR 100 BURNERS 4800 9600 19200 38400 COMMAND 1 5 s 800 ms 400 ms 200 ms QBK PROCESS 0 4 s 400 ms 400 ms 400 ms ANSWER 1 5 s 800 ms 400 ms 200 ms OVERALL 3 4 s 2000 ms 1200 ms 800 ms Messages to from remote host supervisor must be ASCII characters 8 bits no parity 1 or 2 stop bits COMMAND FROM SUPERVISOR TO PERIP...

Page 19: ...ERVICE MANUAL SHUTDOWN FROM PUSH BUTTON H HALT FROM REMOTE BURNER SHUTDOWN SWITCHED OFF FROM FIELDBUS 1 t HALT FROM THERMOSTAT BURNER SHUTDOWN SWITCHED OFF FROM THERMOSTAT INPUT 1 A AIR PRESSURE WAITING AIR RUN UP DELAY AIR PRESSURE WAITING P PREPURGE PREPURGE IN PROGRESS 1 IGNITION BURNER IGNITION TRIAL IN PROGRESS 2 PILOT ON PILOT BURNER ON 3 PILOT MAIN ON PILOT MAIN BURNER ON 4 MAIN ON MAIN BUR...

Page 20: ...TAGE 30 Vdc MAX BAUD RATE 4800 9600 19200 38400 57600 115200 EC TYPE EXAMINATION NOTE Since EN 298 does not describe all functions of QBK implemented to manage all possible industrial scenarios the operator is responsible for ensuring that parameters and functions are appropriate for the application Certification applies only for options and values allowed by EN 298 CONTRIVE S r l I 24040 SUISIO B...

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