This part of IEC 61987 provides
Operating Lists of Properties (OLOPs) for the description of the operating parameters and the collection of requirements for valve actuators,
Device Lists of Properties (DLOPs) for valve actuators.
The structures of the OLOPs and the DLOPs conform to the general structures defined in IEC 61987-11 and IEC 61987-21 as well as to the fundamentals for the construction of LOPs defined in IEC 61987-10. The DLOPs conform additionally with terms defined in IEC 60534-7.
Libraries of properties and of blocks used in the LOPs are listed in Annexes A and B respectively.