Auxiliary Functions; Hours Run Counter; Start Counter / Startup Counter; End Of Life Cycle Function - Siemens LMV50 Series Manual

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4.2.5 Auxiliary functions

4.2.5.1 Hours run counter

The LMV5 has an hour's run counter for gas-fired and oil-fired operation.
The counters start from safety time 1 (phase 40) and are stopped at the end of
operation (when leaving the 6X phases).
The following counters are available and can be displayed using the AZL52 in the
Operation / HoursRun menu; some of the settings can also be adjusted:
Parameter GasFiring
OilStage1/Mod
OilStage2
OilStage3
TotalHoursReset
TotalHours
SystemOnPower

4.2.5.2 Start counter / startup counter

The LMV5 records the number of starts / startups and saves these permanently (via
mains voltage OFF).
The relevant start counters count up with each burner startup cycle (phase 20). This
also occurs if startup is subsequently aborted.
The following counters are available and can be displayed using the AZL52 in the
Operation / StartCounter menu; some of the settings can also be adjusted:
Parameter GasStartCount
OilStartCount
TotalStartCountR
TotalStartCount

4.2.5.3 End of life cycle function

The end of the life cycle of the LMV5 (switching cycles of the relays) is detected and
displayed on the AZL52.
The end of the life cycle is reached when the total startup counter TotalStartCount has
reached 250,000 starts.
This leads to the following message on the AZL52:
Startups > 250,000 maintenance
This means that the LMV5 has to be replaced, refer to chapter Life cycle.
This message can be hidden manually by pressing ESC.
If the message has been hidden, it will automatically appear again after an additional
10,000 starts.
Error and start prevention messages have priority over the end of lifecycle message.

4.2.5.4 Fuel meter

Refer to chapter VSD module.
Basic Documentation LMV5...
4 Burner control
Operating hours for gas (adjustable)
Operating hours for oil stage 1 or modulating
(adjustable)
Operating hours for oil stage 2 (adjustable)
Operating hours for oil stage 3 (adjustable)
Total operating hours (resettable)
Total operating hours (read only)
Operating hours when system is connected to
power (read only)
Number of startups for gas, start counter
(adjustable)
Number of startups for oil, start counter
(adjustable)
Total no. of startups, start counter (resettable)
Total no. of startups, start counter (read only)
CC1P7550en
22.05.2018