You might be able to assign a schedule value directly to the EMS actuator.

Schedule:File,
    SchName, *SchName*,  !- Name
    ... (all associated Schedule:File object's fields)

EnergyManagementSystem:Actuator,
   YourActuatorName, **YourActuatorName**,  SchName, *SchName*,       
   Schedule:File,     
   Schedule Value;