point of an
equip especially used with a
vfd. Run is used with Bool points where true indicates on and false indicates off. When paired with
cmd this is the commanded state of the equipment. When paired with
sensor this is the actual status of the equip. If the equipment also defines an
enable point then both must be commanded on in order to run the equipment.
The standardized points for VFDs are:
The primary on/off point of equipment is always modeled with the
run tag. Paired with
cmd it models the on/off command point; paired with
sensor it models the run status point. Many VFDs also include a secondary
enable point which requires both
enable to be commanded to true in order for the equipment to be on.
Many VFDs will also provide many of the same points as an electric meter. Measurements such as electric demand, consumption, voltage, and current should follow the same conventions as elec meters.