Siemens LMV 5 Series User manual

CC1N7550en
24.05.2011
Building Technologies Division
Industry Sector
7550
Burner Management
System LMV5...
Burner control with integrated fuel / air ratio control and load control for use with
forced draft burners.
Burner control with integrated fuel / air ratio control and load control for use with
forced draft burners including oxygen trim control.
The LMV5... and this Data Sheet are intended for use by OEMs which integrate
the burner management systems in their products!
Use
LMV5... is a microprocessor-based burner management system with matching system
components for the control and supervision of forced draft burners of medium to high
capacity.
- For gas burners with and without fan to EN 298: 2003
- For oil burners to EN 230: 2005
LMV51...
LMV52...

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Warning notes
For additional safety notes, refer to the Basic Documentation of the LMV5... sys-
tem (P7550)!
To avoid injury to persons, damage to property or the environment, the following
warning notes must be observed!
The LMV5... is a safety device! Do not open, interfere with or modify the unit.
Siemens will not assume responsibility for any damage resulting from unauthor-
ized interference!
•All activities (mounting, installation and service work, etc.) must be performed by
qualified staff
•Before making any wiring changes in the connection area of the LMV5..., com-
pletely isolate the plant from mains supply (all-polar disconnection). Ensure that the
plant cannot be inadvertently switched on again and that it is indeed dead. If not
observed, there is a risk of electric shock hazard
•Ensure protection against electric shock hazard by providing adequate protection
for the connection terminals and by securing the housing cover
•Each time work has been carried out (mounting, installation, service work, etc.),
check to ensure that wiring and parameterization is in an orderly state and make
the safety checks as described in «Commissioning notes»
•Fall or shock can adversely affect the safety functions. Such units must not be put
into operation, even if they do not exhibit any damage

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Mounting notes
•Ensure that the relevant national safety regulations are complied with
200
182
232
250
Mountingplate
Size>2mm
39
132
96
Mountingplate
Size1.5...4mm
7550m02e/1208
Notes for mounting LMV5...
Notes for mounting AZL5...

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Installation notes
•Always run high-voltage ignition cables separately while observing the greatest
possible distance to the unit and to other cables
•Do not mix up live and neutral conductors
Electrical connection of the flame detectors
It is important to achieve practically disturbance- and loss-free signal transmission:
•Never run the detector cable together with other cables
– Line capacitance reduces the magnitude of the flame signal
– Use a separate cable
•Observe the maximum permissible detector cable lengths
•The ionization probe is not protected against electric shock hazard. It is mains-
powered and must be protected against accidental contact
•Locate the ignition electrode and the ionization probe such that the ignition spark
cannot arc over to the ionization probe (risk of electrical overloads)
Standards and certificates
Conformity to EEC directives
- Electromagnetic compatibility EMC (immunity)
- Directive for gas-fired appliances
- Low-voltage directive
- Directive for pressure devices
- Safety limit thermostats
2004/108/EC
2009/142/EC
2006/95/EC
97/23/EEC
to EN 14597
Safety and control devices for gas and/or oil burners and gas and/or
oil appliances - Particular requirements -
Part 1: Fuel/air ratio controls, electronic type ISO 23552-1:2007
ISO 9001: 2010
Cert. 00739
ISO 14001: 2010
Cert. 38233
Type CSA
LMV51.000C1 zzz--- --- --- zzz
LMV51.000C2 zzz--- --- --- zzz
LMV51.040C1 --- z--- zzzzzz
LMV51.040C2 --- z--- --- --- --- zzz
LMV51.100C1 zzz--- --- --- zzz
LMV51.100C2 zzz--- --- --- zzz
LMV51.140C1 --- z--- zzzzzz
LMV51.140C2 --- z--- --- --- --- zzz
LMV51.300B1 zzz--- --- --- --- --- z
LMV51.300B2 zzz--- --- --- --- --- z
LMV51.340B1 --- z--- zzz--- --- z
LMV52.200B1 zzz--- --- --- ---
zz
LMV52.200B2 zzz--- --- --- --- zz
LMV52.240B1 --- z--- zzz--- zz
LMV52.240B2 --- z--- --- --- --- ---
zz
LMV52.400B2 zzz--- --- --- --- --- z
LMV52.440B1 --- z--- --- --- --- --- ---
z

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Supplementary documentation
User documentation AZL5… Modbus......................................................................A7550
User Documentation, basic diagram for LMV5...
with 2 types of gas ................................................................................................A7550.1
User Documentation, basic diagram for LMV5...
with 2 types of liquefied fuel..................................................................................A7550.3
Operating Instructions ACS450 PC Software for LMV5... ....................................... J7550
Setting Lists .............................................................................................................. I7550
Fundamentals on Installation LMV5….................................................................. J7550.1
Basic Documentation LMV5….................................................................................P7550
Range Overview LMV5… ....................................................................................... Q7550
Operating Instructions AZL5… (U7550.2) for heating engineer level ......... 74 319 0306 0
Operating Instructions AZL5… (U7550.3) for user level............................. 74 319 0307 0
Service notes
•If fuses are blown, the unit must be returned to Siemens
Life cycle
Burner controls has a designed lifetime* of 250,000 burner startup cycles which, under
normal operating conditions in heating mode, correspond to approx. 10 years of usage
(starting from the production date given on the type field). This lifetime is based on the
endurance tests specified in standard EN 230/EN 298 and the table containing the rele-
vant test documentation as published by the European Association of Component
Manufacturers (Afecor) (www.afecor.org).
The designed lifetime is based on use of the burner controls according to the manufac-
turer’s Data Sheet and Basic Documentation.
After reaching the designed lifetime in terms of the number of burner startup cycles, or
the respective time of usage, the burner control is to be replaced by authorized person-
nel.
* The designed lifetime is not the warranty time specified in the Terms of Delivery
Disposal notes
The unit contains electrical and electronic components and must not be disposed of to-
gether with domestic waste.
Local and currently valid legislation must be observed.

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Mechanical design
The following system components are integrated in the basic unit of the LMV5…:
•Burner control with gas valve proving system
•Electronic fuel / air ratio control for use with a maximum of 4 (LMV51…) or 6
(LMV52…) actuators
•Optional PID temperature / pressure controller (load controller)
•Optional variable speed drive module (VSD module)
Example:
Dual-fuel burner
- Gas: Modulating
- Oil: 2-stage
The system components (display and operating unit, actuators and O2 module) are in-
terconnected via a CAN bus system. Communication between the bus users is ensured
via a reliable, system-based data bus. For safety reasons, integration of the bus into
external CAN bus systems is not allowed. All safety-related digital inputs and outputs of
the system are constantly monitored by a contact feedback network (CFN). For flame
supervision in connection with the LMV5... and continuous operation, the QRI... infrared
flame detector, the QRA7... UV flame detector or an ionization probe can be used and,
for intermittent operation, the optical flame detectors type QRB... or QRA2…, QRA4.U,
QRA10… with AGQ1… (AC 230 V).
The burner management system is operated and programmed with the help of the dis-
play and operating unit (AZL5...) or a PC tool. The AZL5... features clear-text display
and menu-driven operation, thus offering straightforward operation and targeted diag-
nostics. To simplify diagnostics, the display shows the operating states, the type of fault
and the point in time the fault occurred. The different parameter setting levels for the
burner / boiler manufacturer and the heating engineer are protected by passwords. Ba-
sic settings that the plant operator can make on site do not demand a password. Fur-
ther, the display and operating unit serves as an interface to higher level systems such
as building automation and control systems (BACS) or a PC which has the ACS450
software installed. Among other features, the unit affords convenient readout of settings
and operating states, parameterization of the LMV5..., and trend logging.

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Mechanical design (cont´d)
When replacing the LMV5... basic unit (BU), all parameters can be saved in a backup
memory of the AZL5… to be downloaded again when the new unit is installed. Hence,
manual reprogramming is not required.
To design specific fuel trains, the burner / boiler manufacturer can choose from a total
of 7 valve families and – by making use of the large number of parameter setting
choices (programming times, configuration of inputs and outputs, etc.) – fuel trains can
be matched to individual needs.
The SQM4.../SQM9... actuators are driven by stepper motors and offer high-resolution
positioning. The characteristics and settings of the actuators are defined by the LMV5...
basic unit.
Type summary
Safety time TSAmax.
Type reference Mains voltage Parameter set Max. number of actuators Automatic adaptation of controller’s characteristics Limit thermostat Fuel meter input Integrated gas valve proving Integrated PID load controller Control of VSD Analog output O2 trim control
Gas Oil
LMV51.000C1 AC 120 V Europe 4 --- --- --- z--- --- --- --- 3 s 5 s
LMV51.000C2 AC 230 V Europe 4 --- --- --- z--- --- --- --- 3 s 5 s
LMV51.040C1 AC 120 V US / Canada 4 --- --- --- z--- --- --- --- 10 s 15 s
LMV51.040C2 AC 230 V US / Canada 4 --- --- --- z--- --- --- --- 10 s 15 s
LMV51.100C1 AC 120 V Europe 4 zz--- zz--- z--- 3 s 5 s
LMV51.100C2 AC 230 V Europe 4 zz--- zz--- z--- 3 s 5 s
LMV51.140C1 AC 120 V US / Canada 4 zz--- zz--- z--- 10 s 15 s
LMV51.140C2 AC 230 V US / Canada 4 zz--- zz--- z--- 10 s 15 s
LMV51.300B1 AC 120 V Europe 5 *) zzzzzzz--- 3 s 5 s
LMV51.300B2 AC 230 V Europe 5 *) zzzzzzz--- 3 s 5 s
LMV51.340B1 AC 120 V US / Canada 5 *) zzzzzzz--- 10 s 15 s
LMV52.200B1 AC 120 V Europe 6 zzzzzzzz3 s 5 s
LMV52.200B2 AC 230 V Europe 6 zzzzzzzz3 s 5 s
LMV52.240B1 AC 120 V US / Canada 6 zzzzzzzz10 s 15 s
LMV52.240B2 AC 230 V US / Canada 6 zzzzzzzz10 s 15 s
LMV52.400B
2
AC 230 V Europe 6zzzzzzzz3 s 5 s
LMV52.440B1 AC 120 V US / Canada 6zzzzzzzz10 s 15 s
*) When the VSD module is activated, only 4 SQM4.../SQM9... actuators can be
controlled!

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Technical data
Mains voltage AC 120 V
-15% / +10%
AC 230 V
-15% / +10%
Transformer
- Primary side
- Secondary side 1
- Secondary side 2
AGG5.210
AC 120 V
AC 12 V
2 x AC 12 V
AGG5.220
AC 230 V
AC 12 V
2 x AC 12 V
Mains frequency 50 / 60 Hz ±6% 50 / 60 Hz ±6%
Power consumption <30 W (typically) <30 W (typically)
Safety class I, with parts according to II and III to
DIN EN 60730-1
Terminal loading «Inputs»
•Perm. mains primary fuse
(externally)
Max. 16 AT Max. 16 AT
•Unit fuse F1 (internally) 6.3 AT to
DIN EN 60127 2/5
6.3 AT to
DIN EN 60127 2/5
•Mains supply: Input current depending on operating state of the unit
Undervoltage
•Safety shutdown from operating
position at mains voltage
<AC 96 V <AC 186 V
•Restart on rise in mains voltage >AC 100 V >AC 188 V
Oil pump / magnetic clutch
(nominal voltage)
•Nominal current 1,6 A 2 A
•Power factor Cosϕ>0.4 Cosϕ>0.4
LP test valve (nominal voltage)
•Nominal current 0.5 A 0.5 A
•Power factor Cosϕ>0.4 Cosϕ>0.4
Status inputs (KRN): Status inputs (with the exception of the safety loop) of the con-
tact feedback network (CFN) are used for system supervision and require mains-
related input voltage
•Input safety loop Refer to «Terminal loading outputs»
•Input currents and input voltages
- UeMax
- UeMin
- IeMax
- IeMin
UN +10%
UN -15%
1.5 mA peak
0.7 mA peak
UN +10%
UN -15%
1.5 mA peak
0.7 mA peak
•Contact material recommendation
for external signal sources (LP,
DWmin, DWmax, etc.)
Gold-plated silver contacts
•Transition / settling behavior /
bounce
- Perm. bounce time of contacts
when switching on / off
Max. 50 ms
(after the bounce time, the contact must
stay closed or open)
•UN AC 120 V AC 230 V
•Voltage detection
- On
- Off
AC 90...132 V
<AC 40 V
AC 180...253 V
<AC 80 V
Terminal loading «Outputs»
Total contact loading:
(nominal voltage)
•Unit input current (safety loop) total
contact current from:
- Fan motor contactor
- Ignition transformer
- Valves
- Oil pump / magnetic clutch
Max. 5 A Max. 5 A
LMV5... basic unit

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Technical data (cont’d)
Individual contact loading:
Fan motor contactor
•Nominal voltage AC 120 V AC 230 V
•Nominal current 1 A 1 A
•Power factor Cosϕ>0.4 Cosϕ>0.4
Alarm output (nominal voltage)
•Nominal current 1 A 1 A
•Power factor Cosϕ>0.4 Cosϕ>0.4
Ignition transformer (nominal voltage)
•Nominal current 1.6 A 2 A
•Power factor Cosϕ>0.2 Cosϕ>0.2
Fuel valves-gas (nominal voltage)
•Nominal current 1.6 A 2 A
•Power factor Cosϕ>0.4 Cosϕ>0.4
Fuel valves-oil (nominal voltage)
•Nominal current 1.6 A 1 A
•Power factor Cosϕ>0.4 Cosϕ>0.4
Cable lengths
•Mains line Max. 100 m
(100 pF/m)
Max. 100 m
(100 pF/m)
•HCFN line Max. 100 m
(100 pF/m) ¹)
Max. 100 m
(100 pF/m) ¹)
•Analog line Max. 100 m
(100 pF/m)
Max. 100 m
(100 pF/m)
•Flame detector Refer to chapter «Technical Data / Flame
supervision»
•CAN bus Total lengths max. 100 m
&Note! ¹) If the cable length exceeds 50 m, additional loads must not be connected to the
status inputs (refer to «Power supply for the LMV5… system»)!
Above a certain cable length, the actuators must be powered by a separate transformer
installed near the actuators.
The cross-sectional areas of the mains power lines (L, N, PE) and, if required, the
safety loop (safety limit thermostat, water shortage, etc.) must be sized for nominal cur-
rents according to the selected external primary fuse. The cross-sectional areas of the
other cables must be sized in accordance with the internal unit fuse (max. 6.3 AT).
Min. cross-sectional area 0.75 mm²
(single- or multi-core to VDE 0100)
Cable insulation must meet the relevant temperature requirements and conform to the
environmental conditions. The CAN (bus) cables have been specified by Siemens and
can be ordered as accessory items. Other cables must not be used. If this is not
observed, the EMC characteristics of the LMV5... system will be unpredict-
able!
Fuses used in the LMV5... basic unit
- F1 6.3 AT
DIN EN 60127 2/5
6.3 AT
DIN EN 60127 2/5
- F2 4 AT
GMD-4A
4 AT
DIN EN 60127 2/5
- F3 4 AT
GMD-4A
4 AT
DIN EN 60127 2/5
Cross-sectional areas

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Technical data (cont’d)
Operating voltage AC 24 V -15% / +10%
Power consumption <5 W (typically)
Degree of protection of housing
- Rear
- Front
IP00 to IEC 529
IP54 to IEC 529 when installed
Safety class I, with parts according to II and III to
DIN EN 60730-1
Battery:
Supplier Type reference
VARTA CR 2430 (LF-1/2 W)
DURACELL DL 2430
SANYO ELECTRIC, Osaka / Japan CR 2430 (LF-1/2 W)
RENATA AG, Itingen / CH CR 2430
Mains voltage «X89-01» AC 120 V
–15% / +10%
AC 230 V
–15% / +10%
Safety class I, with parts according to II
to DIN EN 60730-1
Mains frequency 50 / 60 Hz ±6% 50 / 60 Hz ±6%
Power consumption Approx. 4 VA Approx. 4 VA
Degree of protection IP54, housing closed
Cable lengths / cross-sectional areas:
•Electrical connection «X89» Screw terminals up to 2.5 mm²
•Cable lengths ≤10 m to QGO20...
•Cross-sectional areas Refer to QGO... description, twisted pairs
Analog inputs:
•Supply air temperature sensor Pt1000 / LG-Ni1000
•Flue gas temperature sensor Pt1000 / LG-Ni1000
•QGO20... Refer to Data Sheet N7842
•Interface Communication bus for LMV52...
Transformer AGG5.220
- Primary side
- Secondary side
AC 230 V
AC 12 V (3x)
Transformer AGG5.210
- Primary side
- Secondary side
AC 120 V
AC 12 V (3x)
Cable types:
AGG5.641 8 mm dia. ±0.2 mm
Bending radius ≥120 mm
Ambient temperature -30...+70°C
(no movements of cable)
Cable is resistant to almost all types of
mineral oil
AGG5.631 7.5 mm dia. ±0.2 mm
Bending radius ≥113 mm
Ambient temperature -30...+70°C
(no movements of cable)
Cable is resistant to almost all types of
mineral oil
AZL5... operating
and display unit
PLL52...
AGG5.2…
CAN bus cable

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Technical data (cont’d)
Note:
All measured voltages refer to connection terminal N (X10–02, terminal 4).
Supply voltage operation / test at termi-
nal POWER QRI... (X10–02, terminal 2) Approx. DC 14 / 21 V
Minimum signal voltage required at ter-
minal FSV / QRI... (X10–02, terminal 6)
Min. DC 3,5 V
Display flame approx. 50 %
br
0...10 V
Ri 10 M>
X10-02 / 6 Signal
X10-02 / 4 N
X10-02 / 2 Power supply
and test
LMV...
+
sw
For detailed information, refer to Data Sheet N7719.
No-load voltage at terminal ION (X10–
03, terminal 1) Approx. UMains
Caution!
The ionization probe must be installed such that protection against electrical
shock hazard is ensured!
Short-circuit current Max. AC 0,5 mA
Required detector current Min. DC 6 µA
Display flame approx. 50 %
Possible detector current Max. DC 85 µA
Display flame approx. 100 %
Permissible length of detector cable
(lay separately)
100 m
(wire-earth 100 pF/m)
&Note!
The greater the detector cable capacitance (cable length), the lower the voltage at the
ionizations probe and, therefore, the lower the detector current. In the case of exten-
sive cable lengths and high-resistance flames, it may be necessary to use low-
capacitance cables (e.g. ignition cable). The electronic circuit is designed such that
impacts of the ignition spark on the ionization current will be largely eliminated. Never-
theless, it must be ensured that the minimum detector current required will already be
reached during the ignition phase. If that is not the case, the connections of the ignition
transformer on the primary side must be changed and / or the location of the elec-
trodes also.
Flame supervision
QRI (suited for
continuous operation)
Connection diagram
IONIZATION (suited for
continuous operation)

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Technical data (cont’d)
For intermittent operation only.
&Note!
AGQ1… is only available for AC 230 V mains voltage.
Power supply in operation DC 280…325 V
Power supply in test mode DC 390…750 V
For more detailed information about QRA2… / QRA10…, refer to Data Sheet N7712.
For more detailed information about QRA4.U, refer to Data Sheet N7711.
Caution!
QRA2… (QRA4.U / QRA10... must not be used when extraneous light suppres-
sion is activated since detector tests will not be made in that case!
Possible ionization current Max. 10 µA
Ionization current required Min. 6 µA
In connection with the LMV5…, ancillary unit AGQ1…A27 must be used.
Power supply AC 230 V
Possible current Max. 500 µA
Current required Min. 200 µA
7550a20/0308
br bl rt sw AGQ1...A27
sw bl
QRA
X10-02 / 3 X10-02 / 4 X3-01 / 1 X10-03 / 1
LMV5...
Assignment of LMV5…terminals:
X10-02 / 3 L
X10-02 / 4 N
X10-03 / 1 Ionization
X3-01 / 1 Fan
When laid together with other cables (e.g. in a cable duct), the length of the 2-core ca-
ble between QRA… and AGQ… must not exceed 20 m. A maximum cable length of
100 m is permitted if the 2-core cable is run at a distance of at least 5 cm from other
live cables. The length of the 4-core cable between AGQ… and LMV5… is limited to
20 m. A maximum cable length of 100 m is permitted if the signal line (ionization /
black) is not run in the same cable but separately at a distance of at least 5 cm from
other live cables.
Flame supervision
QRA2… / QRA4.U /
QRA10… with
AGQ1…A27
QRA…
LMV5…
AGQ1…A27
Connection diagram

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Technical data (cont’d)
Power supply for operation
- QRA73A17 / QRA75A17
- QRA73A27 / QRA75A27
AC 120 V
AC 230 V
Power supply for test via increasing the
power supply for QRI...
(X10-02 terminal 2)
From DC 14 V up to DC 21 V
Required signal voltage
(X10-02 terminal 6)
Min. DC 3.5 V
Perm. length of detector cable
- 6 wire cable
- Signal cable no. 3, 4 and 5
Max. 10
Max. 100 m (lay separately from L, N and
PE in shielded cable)
QRA7...
For more detailed information about QRA7…, refer to Data Sheet N7712.
7550a22/0108
LMV5...
X10-02.6
X10-02.2
X10-02.5
X10-02.4
X10-02.3
QRA7...
0...10 V
+
Ri > 10 M Ω
4
3
PE
2
1
5
Assignment of LMV5… terminals:
X10-02 / 2 QRI... supply
X10-02 / 3 L
X10-02 / 4 N
X10-02 / 5 PE
X10-02 / 6 QRI... signal
Flame supervision
QRA7…
(suited for continuous
operation)
Connection diagram

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Technical data (cont’d)
No-load voltage at the QRB... terminal
(X10–02, terminal 1)
Approx. DC 8 V
Detector current required (with flame) Min. DC 30 µA
Display flame 35 %
Permissible detector current (dark current
with no flame)
Max. DC 5 µA
Permissible detector current Max. DC 70 µA
Display flame approx. 100 %
Permissible length of QRB... detector ca-
ble (lay separately)
100 m (wire-wire 100 pF/m)
&Note!
A detector resistance value of RF <5 kΩis identified as a short-circuit and, in opera-
tion, will lead to safety shutdown as if loss of flame had occurred. Measurement of the
voltage at terminal QRB... during burner operation gives a clear indication: If voltage
drops below 1 V, safety shutdown will probably occur. For that reason, before using a
highly sensitive photoresistive flame detector (QRB1B, QRB3S), it should be checked
whether such a detector is really required! Increasing line capacitance between the
QRB... terminal and mains live «L» adversely affects the sensitivity and increases the
risk of damaged flame detectors due to mains overvoltages. Separate routing of detec-
tor cables as specified in Data Sheet 7714 must be observed.
Configuration
extraneous light
In the case of incinerator plant or other types of plant operating at combustion chamber
temperatures of >650 °C, an extraneous light test must not be made.
Caution!
Observe the relevant standards and regulations (e.g. extra supervision of the
combustion chamber temperature)!
Caution!
QRB… must not be used when extraneous light suppression is activated since
detector tests will not be made in that case!
For indication of flame (on the AZL5...), observe the following general rules:
The above percentage values are obtained when, for parameter «Standardize» (stan-
dardization of flame signal), the default setting is used. The accuracy of the display is a
maximum of ±10 %, depending on the tolerances of the components. It should also be
noted that, for physical reasons, there is no linear relationship between the display and
the detector signal values. This is especially obvious with ionization current supervision.
For more detailed information, refer to Data Sheet N7714.
Flame supervision
QRB... (for intermittent
operation only)
Indication of flame
AZL5…

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Technical data (cont’d)
Storage DIN EN 60721-3-1
Climatic conditions Class 1K3
Mechanical conditions Class 1M2
Temperature range -20...+60°C
Humidity <95% r.h.
Transport DIN EN 60721-3-2
Climatic conditions Class 2K2
Mechanical conditions Class 2M2
Temperature range -20...+60°C
Humidity <95% r.h.
Operation DIN EN 60721-3-3
Climatic conditions Class 3K3
Mechanical conditions Class 3M3
Temperature range -20...+60°C
Humidity <95% r.h.
Caution!
Condensation, formation of ice and ingress of water are not permitted!
Environmental
conditions
(all LMV5... system
components)

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Power supply for the LMV5... system
The LMV5... system is powered via external transformer AGG5.2.... This transformer
supplies power to certain electronics sections via terminal X10 – 01 and to internal
modules, actuators and display and operating units via terminal X52. Run the power
lines to the bus users together with the communication lines in a common cable. Since
the transformer’s power line is restricted, a second power transformer is required if the
system uses more than 4 SQM45... actuators (or in the case of longer distances). The
second power transformer is operated as shown in example 2. In principle, the bus to-
pology must always have a line structure and, therefore, must have a start and an end
node. The individual bus users must be connected in series, whereby the respective end
nodes are to be terminated by bus terminating resistors. The basic unit is a component
of the communication line and to be looped in between the AZL5... and the actuators.
Within the system, the AZL5... always assumes the function of a bus end node. The re-
quired bus terminating resistor is already integrated in that case. With the actuators, the
last user becomes the bus end node (here, the internal bus termination must be acti-
vated via a connecting plug). The other node users within the line structure are to be
configured without using a terminating resistor.
Installation of all components in the burner;
CAN bus cable ↔LMV5... →shielding last actuator ≈20 m
RAST3,5
transformer
X52
Power transformer 1
AGG5.2xx
12 V
AC1 12 V
LMV5... Basic unit
F1 T6,3
F3 T4
Max. Bus cable length
LMV5...-AZL51...: 80 m
AGG5.631
Sub-D
connector
AZL5...
AC1 12 V AC2 12 V CANL CANH
12 V 230 V
12 V
AC2 12 V
X3-04
Fixed internal
bus connection
Max. Bus cable length
LMV5...-SQM4...: 20 m
AGG5.641
SA 4
SQM4...
SA 3
SQM4...
SA 2
SQM4...
SA 1
SQM4...
AC1 12 V AC2 12 V CANL CANH
F2 T4
&Note on example 1!
Total length of CAN bus cable ≤100 m
General
Example 1

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Building Technologies Division CC1N7550en
Industry Sector 24.05.2011
Power supply for LMV5... system (cont´d)
Basic unit LMV5... in the control panel, actuator on the burner;
CAN bus cable «LMV5... ↔last actuator» >20 m
Max. bus cable length
SA4 - SA1: 20 m
AGG5.641
Max. bus cable length
LMV5...- SA1: 75 m
AGG5.641 or
AGG5.631
Only
CANH
CANL
GND
Max. cable length
from power supply
of actuator 3 m
F T4
AC1 12 V
X50
RAST3,5
transformer
X52
Power
transformer 1
AGG5.2xx
12 V
AC1 12 V
LMV5... basic unit
F1 T6.3
X10-01
F3 T4
X51
Max. bus cable length
LMV5...-AZL51...: 5 m
AGG5.631
Control cabinet
CANL CANH GND
12 V 230 V
12 V
SA 4
SQM4...
SA 3
SQM4...
SA 2
SQM4...
SA 1
SQM4...
230 V 12 V
F T2
N
F T4
AC2 12 V
Power line
max. 3 m AC2 12 V
3
Not used
M
L
AC1 12 V AC2 12 V CANL CANH GND Shielding
Sub-D
connector
AZL5...
F2 T4
Power
transformer 2
AGG5.2xx
Burner
3
&Note on example 2!
Total CAN bus cable length ≤100 m
If the distance between the LMV5... and the last actuator exceeds 20 m, or if more than
4 SQM45… are fitted to the burner (refer to «Determination of the maximum cable
length»), a second transformer is required for powering the actuators. In that case,
transformer 1 powers the LMV5... basic unit and the AZL5... display and operating unit
(control panel). Transformer 2 powers the actuators (burner).
&
Note!
With the CAN bus cable connections from the LMV5... (control panel) to the first actua-
tor (burner), the 2 voltages AC1 and AC2 on the LMV5... side must not be connected
and only cables CANH, CANL and GND (+shielding) are to be connected to the first
actuator (burner).
In that case, the actuators must be powered by a second transformer which to be lo-
cated near the actuators.
The power from that transformer (lines AC1, AC2, M) must be fed to the actuator
(ACT4 in the example above) and then connected through via bus cable AGG5.641
(cable type 1) to all the other actuators. The fuses required for transformer 1 are ac-
commodated in the LMV5... basic unit.
&
Note!
For transformer 2, the 3 fuses must be located close to the transformer (for type, refer to
Basic Documentation P7550).
For additional examples, refer to Basic Documentation P7550!
Example 2

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Building Technologies Division CC1N7550en
Industry Sector 24.05.2011
Power supply for the LMV5... system (cont´d)
The maximum cable length between power transformer and CAN bus users is depend-
ent on the type of cable (cross-sectional area), the number of actuators and the type of
actuator (supply current). The charts below can be used to determine the maximum
CAN bus cable lengths between the transformer and the group of actuators or display
and operating unit, depending on the influencing factors. The assumption is made here
that the actuators within the group are close to one another. The minimum cross-
sectional area for the system examples shown results from the start of the curve. The
maximum cable length for the specified system cables AGG5.641 and AGG5.631 re-
sult from the points of intersection with the curves in the chart.
50
48
46
44
42
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
0.5 1.25
2
3
5
7
8
AGG5.631 AGG5.641
4
6
AGG5.631 (cable type 2)
AGG5.641 (cable type 1)
11 x SQM45...
22 x SQM45...
33 x SQM45...
44 x SQM45...
52 x SQM48...
72 x SQM45... + 1 x SQM48...
83 x SQM45... + 1 x SQM48...
61 x SQM45... + 1 x SQM48...
Cross-section area in mm2
Maximum cable length in m
755 0d13e/0308
Determination of the
maximum cable length
Diagram for cable
length
SQM45.../SQM48...

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Building Technologies Division CC1N7550en
Industry Sector 24.05.2011
AGG5.631 (cable type 2)
AGG5.641 (cable type 1)
1 x SQM9...
1 x SQM48... + 1 x SQM9...
3
1 x SQM45... + 1 x SQM9...
CAN bus connection between power transformer and actuator group
&
Note!
When using a PLL52..., the maximum permissible cable length is to be reduced by
2 m.
Example:
- System cable: AGG5.641 (connecting cable to the actuators)
- Actuators: 2 x SQM45...
The point of intersection of the vertical line for the AGG5.641 (1.25 mm2) and curve d
(2 x SQM45...) gives a maximum cable length of 33.4 m between the power trans-
former and the group of actuators.
Diagram for cable
length SQM45...,
SQM48... and SQM9...

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Building Technologies Division CC1N7550en
Industry Sector 24.05.2011
Power supply for the LMV5... system (cont´d)
100
96
92
88
84
80
76
72
68
64
60
56
52
48
44
40
36
32
28
24
20
16
12
8
4
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Cross-section in mm2
Maximum cable length in m
7550d14E/0308
AGG5.631
1
AGG5.631 (cable type 2)
11 x AZL5...
2
21 x AZL5... + 1 x SQM45...
CAN bus connection between power transformer and AZL5... display and operating unit
AGG5.641 (cable type 1) LMV5... ↔SA
1.25 mm2
2 x 0.25 mm2
1.25 mm2
Twisted pair
0.50 mm2
Shield
Silver-grey
RAL 7001
7550z01e/0903
AGG5.631 (cable type 2) LMV5... ↔AZL5...
0.50 mm2
2 x 0.25 mm2
0.50 mm2
Twisted pair
0.50 mm2
Shield
Silver-grey
RAL 7001
7550z02e/0903
Cable types