1) Put converter in OFF or BK state:

S PC BK

2) Disable this property to disable the destination-based economy mode:

S REF.ECONOMY.DEST.MODE DISABLED

In the SPS there exists another economy mode that can be disabled in this way:

S REF.ECONOMY.MODE DISABLED

3) Put converter in CYCLING

S PC CY

Yellow pages link to property: https://accwww.cern.ch/proj-fgc/proj-fgc/gendoc/def/PropertyREF.htm#REF.ECONOMY.DEST.MODE