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Profibus DP – CBF-B1/CBFF-B1 Burner Control Box
vor00161
PROPERTIES
APPLICATION RANGE
WS CBF-/CBFF burner control boxes with Profibus DP
combine essential control components such as flame relay,
ignition transformer, 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 Re-
kumat
®
-burners in flame mode, FLOX
®
mode
or FLOX
®
-Flame mode
The control boxes include extensive diagnostic capabilities
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 individual
control boxes via an optical interface cable. WSSoft en-
ables user access to device parameters as well as detailed
diagnostic and data logging functions. WSSoft and the in-
terface cable are optional features.
Substantial savings in engineering-, installation- and
commissioning costs can be achieved when utilizing
Profibus capabilities. A two wire bus system communicates
all burner related control signals and status information be-
tween a central process control unit (e.g. SPS) and decen-
tralized CBF/CBFF control boxes.
Power supply and safety relevant signals such as interlocks
and FLOX/flame release signals can be hardwired directly
to the control boxes (see Fig. 1).
Individual control boxes are connected 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 system 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 housing
(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 sensitivity of
flame relay strength and flame relay safety times.
•
Flame supervision via flame rod (1 or 2 electrodes) or UV
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 demand signal, air
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-/Info
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
-Burners in flame
mode (CBF-B1) and FLOX
-Flame mode (CBFF-B1)
with Profibus DP
Picture 1
–
WS CBF-/CBFF burner control box