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Profibus DP – CBF-B1/CBFF-B1 Burner Control Box
vor00161
WS CBF-
/CBFF burner control boxes with Profibus DP
combine
essential control components such as flame relay,
ignition trans
former, manual and auto operation, as well as
status display in a compact metal housing. Mounted near
individual burners they are designed for continuous as well
as intermittent operation.
Two models are available:
(CBF-B1*) (Control Box Flame-Profibus) for Rekumat
®
burners in flame mode only
(CBFF-B1*) (Control Box FLOX-Flame-Profibus) for R
kumat
®
-burners in flame mode, FLOX
®
or FLOX
®
-Flame mode
The control boxes include extensive diagnostic capa
for ease of start-
up, maintenance and trouble shooting.
The built in two-
digit display can visualize program status,
flame signal strength and device parameter settings. In
manual mode it is possible to start burners step-by-step.
A PC or laptop computer can be connected to indi
control boxes via an optical interface cable. WSSoft e
ables user access to device parameters as well as detailed
diagnostic and data logging functions. WSSoft and the i
terface cable are optional features.
Substantial savings in engineering-, installation-
commis
sioning costs can be achieved when utilizing
Profibus capabili
ties. A two wire bus system communicates
all burner related control signals and status information b
tween a central process control unit (e.g. SPS) and dece
tralized CBF/CBFF control boxes.
Power supply and safety relevant signals such as in
and FLOX/flame release signals can be hardwired directly
to the control boxes (see Fig. 1).
Individual control boxes are co
nnected to the bus system
via a separate plug connector, which has two terminals for
incoming and outgoing bus wires. Control boxes at the end
of a bus sys
tem may be terminated by means of an easily
accessible switch, enabling a termination resistor.
*) –
B1 with Profibus DP ® registered trademark of WS GmbH
• Standard-Hardware with integrated flame relay and cus-
tomizable Software in a cast aluminum hous
(200x200x110mm). Protection rating IP54.
• Connection terminal for power supply 230V 50/60 Hz (op-
tional 115V AC).
• Works with grounded or ground free grid.
• Release signal input 230V AC (optional 115V AC) via proc-
ess safety interlock (load for ignition transformer and con-
nected solenoid valves are present).
•
Ignition transformer optional inside control box or external
mount.
• Dynamic self supervision with adjustable sen
flame relay strength and flame relay safety times.
• Flame supervision via flame rod (1 or 2 elec
probe
• Intermittent or constant operation (only with ionisation)
• Configurable failure response (e.g. reset, multiple reset,
air purge after reset)
• Air volume supervision via delta-p switch.
• Configurable control parameters (Min. On and Off times,
air valve lag time)
•
Configurable air valve control with air valve closure in case
of fault
• Cooling air utilizing combustion air valve or optional addi-
tional cooling air valve via Profibus cooling signal.
• Profibus DP interface
incl. Connector and configurable
Profibus address switches includes GSD file.
• Profibus DP control (remote reset, heat de
purge, cooling).
• Profibus DP burner status outputs.
•
Program status, ionization current and fault displayed
(LED)
• Manual operation for burner tuning and diagnosis
• Manual reset button on control unit housing (Reset-
button)
• Access to burner fault information, diagnostics and statisti-
cal information (cont. tally of faults, operating hours, burner
on times, ignition attempts etc.)
for service and mainte-
nance via optical interface cable and WSSoft.
• POC function (proof of closure) for main valve switch (pa-
rameterizeable)
Additional features of CBFF-B1-control box:
• Failsafe inputs for activation of FLOX/Flame mode with in-
tegrated gas valve switching FLOX/Flame.
• FLOX gas valve can be connected.
•
Input for supervision of air purge and combustion air flow
in FLOX mode via delta-p switch.
Decentralized Burner Control Box in a compact
metal housing for WS-REKUMAT
-
mode (CBF-B1) and FLOX
-Flame mode (CBFF-
Picture 1 –
WS CBF-/CBFF burner control box
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