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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
X2:
PC
X2:
X2:
Power supply, safety interlock, FLOX-Flame
Bus wire
1
2
A maximum of 126 devices (masters and slaves) can be connected in one sys
tem. Each device is identified by a unique
Profibus address. Readily accessi
ble 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 segmen
t may consist of up to 32 devices
(masters or slaves). The two open ends of each bus segment must be terminated with active bus termi
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-
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 wir
ing. 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
9
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