Basic Unit Lmv52, Software From V04.20 To V04.50; Basic Unit Lmv52, Software From V04.50 To V04.80 - Siemens LMV50 Series Manual

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Building Technologies

22.2.1.6 Basic unit LMV52, Software from V04.20 to V04.50

1. Abortion of speed test during operation by leaving the left operating position with
controlled shutdown.
2. Implementation of functionality to reach the operating position after ignition via a
curvepoint other than point 1 (StartPoint Op).
3. No more writing of diagnostic data in the ignition phases (not yet implemented with
the VSD module).
4. Position valuation of actuators and VSD in phases 20...22 removed.
5. Introduction of timeout (ramp time) for opening the release contact when speed is
not reached in standby and home run.
6. Valuation of extraneous light during shutdown in phase 76 (2nd part of afterburn
time) shifted.
7. Implementation of load adjustment with ExtR-X5 and deactivated fuel actuator.
8. With error activated in standby and cold QGO20 → response of start prevention
changed.

22.2.1.7 Basic unit LMV52, Software from V04.50 to V04.80

1. Flame failure during second safety time.
2. Error code and repetition counter for flame failure during second safety time
changed from Loss of flame during operation to No flame at the end of the safety
time.
3. Fuel train with direct ignition.
In the case of fuel trains with direct ignition (G, LO, HO), phases 50 (second safety
time) and 52 (interval 2) are skipped.
4. Minimum extraneous light test before ignition.
Introduction of a minimum test time of 5 seconds for extraneous light during startup
in phase 36 (driving to ignition position).
5. Flying start.
In the case of flying start, the VSD test is skipped.
6. MinLoad...
Parameter MinLoadGas at the heating engineer level is valued higher than
parameter User MaxLoad... at the Enduser level.
7. StartPoint Op.
When deleting the curve parameters, StartPoint Op, the value used for overwriting
parameters was too high. This has been rectified with version 4.80.
8. Flame valuation after reset.
A parasitic effect in the QRI2 during the reset phase leads to a short signal pulse.
Flame valuation during the reset is delayed.
Basic Documentation LMV5...
22 Revision history
CC1P7550en
22.05.2018