Technical Instructions LMV Series
Document No. LV5-100
0
Section 10 Page 4 SCC Inc.
LMV51 Software Update: Version 0230 to 0250 (continued)
7. The maximum filling and evacuation
times for gas valve proving are now limited by the
maximum permissible safety time for startup. In particular, this affects the burner control
versions that use the American standard parameter set.
8. Introduction of max. load limitation at the user level (UserMaxLoadMod, UserMaxLoadStg).
9. Hiding an adjustable load range aimed at reducing resonance phenomena in the
burner/boiler/stack system (LoadMaskLowLimit, LoadMaskHighLimit).
10. The fuel actuator can be deactivated (only with an LMV52).
11. A new flue gas recirculation (FGR) function (only with an LMV52). Actuator AUX3 can be
employed for controlling the damper used for flue gas recirculation (FGR). To improve the
burner’s startup characteristics, only this actuator can be driven from its ignition position to the
adjusted curve, either time-delayed or depending on the flue gas temperature.
12. A new option for no prepurge for gas burners (Skip Prepurge Gas). As per EN 676, the
prepurge time can be skipped if a valve proving system is installed.
13. Changing the extraneous light test for OEMs. Now the OEM is able to skip the extraneous
light test in the start sequence (ExtranLightTest).
14. The curve points can now be adjusted without actually running the actuators to the
adjusted positions.
15. When running heavy oil, the high oil pressure switch can now be opened in phases 38 and
44 for the pressure switch reaction time.
LMV51 Software Update: Version 0250 to 0510
The microcomputer PCB was converted to the
same microcomputer PCB as in the LMV52
(known as platform conversion). This means that from the date of the switchover, these
variants will also have the additional hardware input X7-03.2 (start release gas or POC), which
was previously only available for the LMV52.
Additionally, the assignment of the software functions in the LMV5 has also been rearranged,
meaning that the release upgrade includes functions from higher LMV5 variants as well as
completely new functions.
The following updates were made with LMV51 software version 0510:
1. Configuration of new input X7-03.2 for start release gas or for various POC via parameter
StartReleaseGas.
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