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05598
D GB F NL I E
TR CZ PL RUS H
DK S N P GR
➔ www.docuthek.com
Operating instructions
Bus module BCM 400..B
PROFIBUS for BCU 4xx
© 2019 Elster GmbH · Edition 04.19
Translation from the German
Contents
Contents
Bus module BCM 400..B PROFIBUS
for BCU 4xx............................
Contents ..............................
Safety.................................
Checking the usage .....................
Installation ............................
Replacement...........................
Wiring ................................
Commissioning.........................
Assistance in the event of malfunction .....5
Technical data .........................6
Logistics ..............................6
Contact ...............................6
Safety
Safety
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, pass the instructions on to the operator. This unit must be installed and commissioned
in accordance with the regulations and standards
in force. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• , , , ... = Action
▷ = Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-compliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
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Checking the usage
The bus module BCM400..B1 is used as a commu-
nication interface for burner control units BCU460,
BCU465 or BCU480 for connection to a fieldbus
interface via PROFIBUS.
Networking via the fieldbus enables the BCUs to be
controlled and monitored by an automation system
(e.g.PLC). The communications network must be
protected against unauthorized access.
This function is only guaranteed when used within the
specified limits– see page6 (Technical data). Any
other use is considered as non-compliant.
Type code
Code Description
BCM Bus module
400 Series 400
S0
S
B
B
B
B4
/
/
-0
-
Part designations
Standard communication
SafetyLink
PROFIBUS DP
PROFINET
EtherNet/IP
Modbus TCP
9-pin D-Sub
Two RJ45 sockets
Three-point step control via bus
1
3
4
Ambient temperature (A+B) – see type label.
Elster GmbH
Osnabrück, Made in Germany
-
A
B
Installation
Disconnect the BCU from the electrical power
supply.
Open the cover of the BCU.
Insert the bus module in the slot provided.
–
2
BCM../1 with 9-pin D-Sub connection
9-pin D-Sub connection
Code switches
4 Type label
Replacement
Disconnect the BCU from the electrical power
supply.
Open the cover of the BCU.
Remove the connection plug from the power
and bus module.
4 Remove the modules in the following order to
facilitate handling:
. Power module,
. Bus module.
2.
1.
▷ Installation of the modules in reverse order.
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Wiring
▷
PROFIBUS installation guidelines, see
www.profibus.com.
Do not confuse data cables A and B in the
PROFIBUS plug.
BCU..B1/1
1B1A2B2A
Commissioning
WARNING
Risk of explosion! Do not enable the BCM and
control unit (BCU) for operation until the parameter
settings and wiring are correct and the faultless
processing of all input and output signals has been
ensured.
If the control unit is activated via the inputs at the
terminals in the event of faulty or interrupted bus
communication, invalid communications data, or
during initialization, the normal program runs. Be
sure to take the settings of parameters A085 to
PROFIBUS DP
A089 into account.
Fieldbus communication can be configured using
▷
the engineering tool of the automation system.
ON
OFF
ON
OFF
▷ The BCSoft operating instructions and software
can be downloaded from www.docuthek.com.
Set parameter A080 = 2 (Fieldbus communica-
tion without address check).
Check the code switch settings (001 to 125) on
the BCM for PROFIBUS communication between
BCSoft and the control unit.
Connect the shield on both sides and over a
wide area with shield clips in the plug.
Ensure an equipotential bond between the units.
▷
Switch on the terminal resistors on the first and
last subscriber in the segment.
4 Wire control signals that are relevant for safety,
such as the safety interlocks and digital input,
separately.
▷
The purge signals can be transferred via the
bus communication or by a separate cable via
terminal.
▷
Protect the communications network against
unauthorized access.
▷
Each code switch setting combination may only
exist once within the fieldbus system.
▷ Each device name/network name may only be
allocated once within the fieldbus system.
▷
All the device-specific parameters for the
BCM..B1 are saved in a device master data
file(GSD): download from www.docuthek.com.
Copy the GSD file.
▷
The steps required to copy the file are described
in the instructions for the automation system.
4 Configure the PROFIBUS DP using the appropri-
ate tools of the automation system you are using.
▷
The BCM..B1 will automatically identify the baud
rate (max. 1.5 Mbit/s).
▷
The max. range per segment depends on the
baud rate:
Baud rate [kbit/s]
93.75 187.5 500 1500
Range [m (ft)]
1200
(3937)
▷
For instructions on commissioning the control
1000
(3280)
400
(1312)
200
(656)
unit, see operating instructions “Burner control
unit BCU46x,480”.
▷
The ranges can be increased by using repeaters.
No more than three repeaters should be connected in series.
▷
The BCU with BCM..B1 indicates
––
when the
mains switch has been switched off. This signals
Standby mode. Bit6=0. The bus interface is
still supplied with voltage to maintain the function of the communications system. The control
outputs of the BCU (valves, ignition transformer)
are electrically isolated from the mains voltage.
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5 Apply voltage to the terminals.
1
1
2
2
A
P
HT
ϑ
1
A
P
ϑ
2
1
/
1
2
/
1
2
/
A
on
1
2
/
A
P
on
on
1
2
/
A
P
DI
on
on
on
1
2
/
A
P
DI
on
on
on
1
2
/
A
P
DI
on
on
on
1
2
/
A
P
DI
on
on
on
1
2
/
A
P
DI
on
on
on
1
2
/
A
A
P
DI
on
on
on
1
2
/
P
A
A
P
DI
on
on
on
1
2
/
6 Switch on the BCU.
▷ The display
––
will go out.
▷ Bit 6 of input byte 0 is set.
7 Start the PROFIBUS communication.
▷ As soon as the flashing display
and
appears in the display, the data traffic
00
0
goes out
is operating.
Input bytes (BCU ➔ master)
Bit Byte 0 Byte 1 Byte 2 Byte 3 Byte 4
0
/
1
2
3
4
5
on
on
on
Reserved
6
/
fault messages
Program status and
0 – 25.5 µA
255 steps
7
Output bytes (master ➔ BCU)
Bit Byte 0
0
1
/
2
3
4
5 Reserved
6 Reserved
7 Reserved
255 steps
0 – 25.5 µA
Operating signal, (pilot) burner
Operating signal, main burner
Fault signal
Operating signal, air actuator
Purge operating signal
High temperature operation
Ready for operation
Manual mode
Reset
Start-up signal
External air actuator control
Purge
8 Start the program for the burner/pilot burner: set
bit 1 of output byte 0.
▷
The BCU starts the burner according to the
presets.
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▷
Assistance in the event of malfunction
DANGER
Electric shocks can be fatal! Before working on
possible live components, ensure the unit is disconnected from the power supply.
Fault-clearance must only be undertaken by authorized trained personnel.
▷ Faults may be cleared only using the measures
described below.
▷ If the control unit (BCU) does not respond even
though all faults have been remedied: remove
the unit and return it to the manufacturer for
inspection.
▷
If a fault message (
can continue to be operated via its digital inputs.
? Faults
! Cause
• Remedy
0
) is active, the control unit
0
? The display blinks and indicates 0.
! No connection established between BCU and
PLC (controller).
• Check the wiring.
• Check the PLC program to ensure that the net-
work name and IPconfiguration of the BCU are
valid.
• Switch on the PLC.
Or
? A bus fault is indicated on the automation
system.
! The PROFIBUS DP data traffic has suffered a
fault.
! Bus cable interrupted.
• Check cable.
! Incoming and outgoing bus cables confused in
the plug.
• Check the wiring.
! A and B cables confused.
• Check the wiring.
! Terminal resistors connected incorrectly.
• Switch on the terminal resistors on the first and
last subscriber in the segment and switch them
off for all other subscribers.
! Incorrect PROFIBUS address set.
• Correct the address setting – switch the unit off
and then on again to save the address.
! Bus cables too long.
• Reduce cable length or baud rate – see
page3 (Commissioning).
If the transfer rate is reduced, remember that
this will increase the signal running times to and
from the individual units.
! Poor shielding.
• Check whether the shield is connected to the
shield clips in the PROFIBUSDP plugs in full and
over a wide area.
! Poor equipotential bond.
• Check whether the PROFIBUS DP shield is con-
nected at all points to the same ground potential
via the grounding system of the units.
• If necessary, an equipotential bonding cable must
be laid.
▷ If faults occur sporadically in the PROFIBUSDP
system, and are only indicated briefly in the bus
master, the following points in particular should
be checked:
– Terminal resistors,
– Shield,
– Cable lengths/routes,
– Equipotential bond,
– Use of interference-suppressed spark electrode
terminal boots (1kΩ).
▷
For information on planning and the structure of
a PROFIBUS network and the components to
be used (e.g. cables, lines and switches), see
www.profibus.com or the instructions for the
automation system.
EE
? The display on the control unit blinks and
indicates
! Internal communication with bus module has
suffered a fault.
• Connected control elements must be equipped
with protective circuits in accordance with the
manufacturer’s instructions.
▷
This prevents high voltage peaks which can
cause malfunctioning of the BCU.
• Use interference-suppressed terminal boots
(1kΩ).
• If the fault cannot be remedied by doing this,
remove the unit and return it to the manufacturer
for inspection.
! Bus module is defective.
• Replace the bus module.
For other control unit fault messages, see
BCU46x,480 operating instructions, section
entitled “Assistance in the event of malfunction”.
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Technical data
Ambient conditions
Avoid direct sunlight or radiation from red-hot
surfaces on the unit.
Avoid corrosive influences, e.g. salty ambient air
or SO2.
The unit may only be stored/installed in enclosed
rooms/buildings.
This unit is not suitable for cleaning with a high-
pressure cleaner and/or cleaning products.
Ambient temperature:
-20 to +70°C (-4 to +158°F),
no condensation permitted.
Transport temperature = ambient temperature.
Storage temperature: -20 to +70°C (-4 to +158°F).
Enclosure: IP 20 pursuant to IEC 529.
Installation location: min. IP 65 (for installation in
BCU4xx).
Permitted operating altitude: < 2000 m AMSL.
Mechanical data
Dimensions (W × H × D):
96 × 63 × 23 mm (3.78 × 2.48 × 0.91 inch).
Weight: 0.3 kg.
Electrical data
Power consumption: 1.2VA.
Power loss: 0.7 W.
Designed lifetime
Max. service life under operating conditions:
10 years after date of production.
Logistics
Transport
Protect the unit from external forces (blows, shocks,
vibration).
Transport temperature: see page 6 (Technical
data).
Transport is subject to the ambient conditions de-
scribed.
Report any transport damage on the unit or packaging without delay.
Check that the delivery is complete, see page2
(Part designations).
Storage
Storage temperature: see page6 (Technical data).
Storage is subject to the ambient conditions described.
Storage time: 6months before using for the first
time. If stored for longer than this, the overall service
life will be reduced by the corresponding amount of
extra storage time.
Packaging
The packaging material is to be disposed of in ac-
cordance with local regulations.
Disposal
Components are to be disposed of separately in
accordance with local regulations.
Contact
Contact
If you have any technical questions, please contact
your local branch office/agent. The addresses are
available on the Internet or from ElsterGmbH.
We reserve the right to make technical modifications
in the interests of progress.
Strotheweg 1, D-49504 Lotte (Büren)
Elster GmbH
Tel. +49 541 1214-0
Fax +49 541 1214-370
hts.lotte@honeywell.com, www.kromschroeder.com
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