Siemens LMV 5 Series, Technical Instructions, Page: 368 / 374

Technical Instructions LMV Series
Document No. LV5-8000
Appendix A Page 38 SCC Inc.
VFD Bypass (continued)
To bypass the VFD on a single fuel system, both gas and oil settings in the LMV52 need to be
utilized. One fuel will be set up to run with the VFD, while the other fuel is set up to run
without the VFD. For the rest of this procedure, it will be assumed that a VFD is being used
when running gas and not being used when running oil. Since only one fuel (gas) is being
operated on both gas and oil settings, the AGM60 switching module will be used to change over
all necessary inputs and outputs when the LMV52 switches between fuels.
Single Fuel Procedure
1. Wire the VFD and motor contactor contacts as shown in Figure 13.
Figure 13: VFD Wiring for Single Fuel VFD Bypass
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