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14/17 

Building Technologies Division 

User Manual LMV5... 

CC1A7550.5en 

 

List of error messages

 of LMV5 system 

07.07.2015 

 

Error 

code 

Diagnostic 

code 

Device 

Display 

Meaning for the LMV5 system 

Troubleshooting 

B7 13  O2M 

No valid COx signal from PLL52

 

Compensation element voltage outside 
the valid range 

Check connections (polarity, short-circuit, open-circuit). 
Check housing temperature of the QGO (temperature inside -
25...120 °C) 

B7 15  O2M 

No valid COx signal from PLL52

 

Temperature of combustion air sensor 
outside the valid range (-20...+800 °C) 

Check the connection (correct polarity, short-circuit) 
Check ambient temperature 

B7 16  O2M 

No valid COx signal from PLL52

 

Temperature of flue gas sensor outside 
the valid range (-20...+800 °C) 

Check the connection (correct polarity, short-circuit) 
Check ambient temperature 

B7 17  O2M 

No valid COx signal from PLL52

 

Fault during combustion air sensor test 

If fault occurs sporadically: Improve EMC. 
If fault occurs constantly: Replace the defective O2 module 

B7 18  O2M 

No valid COx signal from PLL52

 

Fault during thermo couple

 

test 

If fault occurs sporadically: Improve EMC. 
If fault occurs constantly: Replace the defective O2 module 

B7 19  O2M 

No valid COx signal from PLL52

 

Fault during compensation element test 

If fault occurs sporadically: Improve EMC. 
If fault occurs constantly: Replace the defective O2 module 

B7 1A  O2M 

No valid COx signal from PLL52

 

Fault during channel comparison of O2 
signal 

If fault occurs sporadically: Improve EMC. 
If fault occurs constantly: Replace the defective O2 module 

B7 1B  O2M 

No valid COx signal from PLL52

 

Fault ADC test voltages 

If fault occurs sporadically: Improve EMC. 
If fault occurs constantly: Replace the defective O2 module 

B7 20  O2M 

No valid COx signal from PLL52

 

Temperature of QGO measuring cell too 
low 

Check mains power supply on O2 module. 
Check fuse F2 on O2 module. 
Check connection between O2 module and QGO heating

 

B7 21  O2M 

No valid COx signal from PLL52

 

Temperature of QGO measuring cell too 
high 

Check QGO temperature 

B7 22  O2M 

No valid COx signal from PLL52

 

Fault during calculation test 

If fault occurs sporadically: Improve EMC. 
If fault occurs constantly: Replace the defective O2 module 

B7 23  O2M 

No valid COx signal from PLL52

 

Measured internal resistance of the QGO 
measuring cell is smaller than 5 Ohm or 
greater than 150 Ohm 

Check the connection (correct polarity, short-circuit) 
If fault occurs after more than 1 year, QGO may have reached 
the end of its service life  

 Replace QGO 

B7 24  O2M 

No valid COx signal from PLL52

 

Measured response time of the QGO 
measuring cell exceeds 5 seconds 

Check mounting position of QGO. 
Check to see if QGO is dirty. 
If fault occurs after more than 1 year, QGO may have reached 
the end of its service life  

 Replace QGO 

B7 25  O2M 

No valid COx signal from PLL52

 

Fault occurred during O2 sensor test 

Check fluctuations of the O2 value 

B7 30  O2M 

No valid COx signal from PLL52

 

CAN fault 

If fault occurs sporadically: Improve EMC. 
If fault occurs constantly: Replace the defective O2 module 

Содержание LMV52 series

Страница 1: ... V05 00 PLL52 V01 50 CC1A7550 5en 07 07 2015 Building Technologies Division LMV52 Burner management system for forced draft burners LMV52 4 COx supervision and control User Manual The LMV5 and this User Manual are intended for OEMs which integrate the LMV5 in their products Note This documentation is only valid together with the LMV5 Basic Documentation P7550 ...

Страница 2: ...equisite Connection diagram 6 4 5 Operating modes of COx supervision 6 4 5 1 COx Alarm operating mode 7 4 5 2 COx Control operating mode 8 4 6 Increasing the manipulated variable in case of COx signal O2ModOffset formerly O2Offset 9 4 7 Setting notes 10 4 7 1 Parameterizations 10 4 7 2 Setting fuel air ratio control 10 4 7 3 Setting the O2 trim controller 11 4 7 4 Setting the COx supervision 11 4 ...

Страница 3: ...uid fuel A7550 3 LMV5 User Documentation Assembly of VKF41 C gas damper with ASK33 4 mounting kit to the SQM45 295A9 actuator A7550 4 LMV5 Setting Lists parameter and error list I7550 ACS450 Operating Instructions J7550 LMV5 Installation Guide J7550 1 LMV5 Data Sheet N7550 LMV5 Basic Documentation P7550 LMV5 Product Range Overview This document contains a complete overview Q7550 AZL52 LMV51 User M...

Страница 4: ... follows depending on the hazard level Warning means that death severe personal injury or substantial damage to property can occur if adequate precautionary measures are not taken Note draws your attention to other information about the product and its handling contained in other pieces of documentation Only qualified personnel are allowed to commission and operate the unit Qualified personnel in ...

Страница 5: ...sion V10 10 4 3 Functioning principle of COx supervision For the purpose of supervising the COx quantities during combustion the LMV52 4 offers the option of connecting a COx measurement transducer to the PLL52 The states of the COx measurement transducer switching output have the following meanings Contact open COx present Contact closed No COx present These are evaluated by the LMV52 4 when COx ...

Страница 6: ...e set to standard or IgnPtWoutTC as all other start modes require a temperature sensor at input X87 of the PLL52 In terms of the CO functions we recommend using the standard start mode only Parameter Startmode standard Ign Load TC IgnPtWithTC IgnPtWoutTC If input X87 on the PLL52 is used to connect the COx sensor the PLL52 parameter SupAirTempSens must be set to Pt1000 COx control is only possible...

Страница 7: ... takes place Parameters The waiting time referred to above for the COx Alarm is dependent on the Tau Low Fire time constant determined by O2 trim control and can be set using the NumberTauSuspend parameter as a multiple of Tau Low Fire Parameter NumberTauSuspend 0 140 Tau Low Fire Permissible time for a COx signal to reach in the operating phases 60 and 62 before the fault response takes place Par...

Страница 8: ...y is then increased by means of the O2 trim control function if a COx signal is present during operation This is not a conventional COx control with a COx setpoint actual value and control difference but instead is an O2 trim control effect in relation to the COx value COx supervision takes place in the same way as in the COx Alarm operating mode Phases of COx control The COx controller is active ...

Страница 9: ...value when O2 trim control is deactivated The parameter defines the increase of the O2 value in Example O2ModOffset 0 8 O2 actual value 1 4 In the event of COx signal the O2 value reached will be 2 2 Actual O2 value O 2ModOffset 1 4 2 2 O2 setpoint 7550d49e 1114 Figure 1 Increasing the manipulated variable in the case of a COx signal Parameter Gas O2ModOffset 0 5 Oil O2ModOffset 0 5 Fault response...

Страница 10: ...el pressure temperature and pressure of the combustion air the set residual O2 content will lie above the O2 setpoints required by O2 trim control Example Figure 2 Setting fuel air ratio control Parameterized load proportional to the fuel rate The burner load parameterized at the curvepoints must be proportional to the actual burner load To make the correct setting determine the burner load with t...

Страница 11: ...pter Setting notes Setting fuel air ratio control All O2 setpoints must be adjusted under the same environmental conditions It is important to adjust the O2 setpoints at the same ambient temperatures If later individual setpoints are changed all setpoints of the curvepoints must be readjusted since environmental conditions will probably be different from those at the time the initial settings were...

Страница 12: ...2 trim controller is held at the last value LockTStart Locking time following startup until the O2 trim controller is initialized or released The locking time is necessary in order to ensure that the actual O2 value is measured The O2 trim controller is still deactivated or locked InitContr The O2 trim controller is initialized The O2 trim controller is locked LockTLoad The O2 trim controller is l...

Страница 13: ...e EMC If fault occurs constantly Replace the defective O2 module B7 02 O2M No valid COx signal from PLL52 CRC fault during RAM test If fault occurs sporadically Improve EMC If fault occurs constantly Replace the defective O2 module B7 04 O2M No valid COx signal from PLL52 Fault during key value check If fault occurs sporadically Improve EMC If fault occurs constantly Replace the defective O2 modul...

Страница 14: ...parison of O2 signal If fault occurs sporadically Improve EMC If fault occurs constantly Replace the defective O2 module B7 1B O2M No valid COx signal from PLL52 Fault ADC test voltages If fault occurs sporadically Improve EMC If fault occurs constantly Replace the defective O2 module B7 20 O2M No valid COx signal from PLL52 Temperature of QGO measuring cell too low Check mains power supply on O2 ...

Страница 15: ... Reset the unit Attention If fault occurred during parameterization Check the parameters changed last If fault cannot be rectified by the reset Restore parameters from AZL5 Otherwise replace the O2 module B7 33 O2M No valid COx signal from PLL52 Page disrupted Reset the unit Attention If fault occurred during parameterization Check the parameters changed last If fault cannot be rectified by the re...

Страница 16: ...eck the parameters changed last If fault cannot be rectified by the reset Restore parameters from AZL5 Otherwise replace the O2 module B7 3F O2M No valid COx signal from PLL52 Internal plausibility fault This type of fault covers possible errors that cannot practically occur If fault occurs sporadically Improve EMC If fault occurs constantly Replace the defective O2 module B7 41 LMV5 No valid COx ...

Страница 17: ... LMV52 4 software version V10 20 COx control is available in conjunction with the PLL52 software version V01 40 and above as the PLL52 requires a temperature range for the supply air temperature sensor of 400 C Siemens AG Building Technologies Division Berliner Ring 23 D 76437 Rastatt Tel 49 7222 598 279 Fax 49 7222 598 269 www siemens com 2015 Siemens AG Building Technologies Division Subject to ...

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