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Profibus DP – CBF-B1/CBFF-B1 Burner Control Box
vor00161
Fig. 1 – Burner control via CBF/CBFF with Profibus ( schematic):
SPS,PLC, CPE
L1,N, PE
BUS
FLOX-GWS
CBFF-B1
BUS
X2:
PC
C
CBF-B1
X2:
BUS
CBF-B1
X2:
BUS
Power supply, safety interlock, FLOX-Flame
Bus wire
1
2
3
A maximum of 126 devices (masters and slaves) can be connected in one system. Each device is identified by a unique
Profibus address. Readily accessible switches inside CBF/CBFF control boxes allow for easy address selection (range
1…126). All devices are connected in a bus fashion (in series, in line), each line segment may consist of up to 32 devices
(masters or slaves). The two open ends of each bus segment must be terminated with active bus terminators. Terminators
must have a constant power supply to guarantee error free operation. CBF/CBFF control boxes may be terminated by acti-
vating a switch located inside the Profibus connector.
Multiple line segments (>32 devices) or long wire runs require repeaters to boost signal strength.
In order to reduce electromagnetic interference it is required to use shielded wire (e.g. Lapp Unitronic order # 2170-220T or
Siemens order # 6XV1830-OEH10). Shield must be diligently fastened to ground terminals of connected devices and po-
tential equalization between multiple devices may be required.
To further reduce risk of interference keep bus wires separate from other wiring. Data wires A and B must not be cross
connected.
(Refer to applicable engineering guide lines and regulations)
Fig. 2: Profibus connector:
1B
2A
2B
8
3
6 5
1
CBF-B1/CBFF-B1 – Control box
220
grün
grün
red
red
shield
shield
Incomming bus cable
Outgoing bus cable to next CBF-B1/CBFF-B1
1A
5
9
6
1
Sub-D 9-pin
Variosub Profibus connector
9-pin
Kroms-No. 74960431
Note:
Power supply 230V 50/60Hz (optional 115V 50/60Hz) is hardwired directly to the control boxes CBF-B1/CBFF-B1
according to the included connection diagram. It must be saved dependent on length and width of wire, tempera-
ture or connected load.
Removable flange plate and connector terminals for easy exchange of control boxes while operating. Bus connec-
tor can be pulled without bus interruption
PROFIBUS DP with CBF-B1/CBFF-B1