Operating Instructions

LON Interface Option Overview
LON Interface Option Functionality
The foundation of the SED2 VFD LON Interface Option is a Neuron 3120 processor, which
manages the LON software functionality. The LON software functionality is based on LONMark
Functional Profile Number 6010 for Variable Speed Motor Drives. In addition to the Standard
Network Variable Types (SNVTs) of this Functional Profile, several others have been added:
Two sets of inputs were added for feedback and setpoint. Two sets of outputs were added for
local drive information and controlled feedback. Each input and output set consists of five
points, including:
•
•
•
•
•
•
− High Pressure Point
− Low Pressure Point
− Temperature Point
− CO
2 point (measured in PPM)
− IAQ point (measured as a percentage)
Only one of these points will be accessed for each set. If more than one point is accessed, an
error condition occurs.
Six output points were added for status of digital inputs.
One point was added for alarm.
One point was added for drive reset.
Network Variable Types and Configuration
Properties
The LON Interface Option communicates with the LONWorks network using real units in the form
of Standard Network Variable Types (SNVTs) and Standard Configuration Property Types
(SCPTs). Figure 3 provides a summary of the L
ON Interface Option network variables and
configuration properties.
To provide an interoperable interface, the L
ON Interface Option uses two standard LONMark
objects.
Object 0 (Functional Profile 0 – Node Object) – Handles node-specific variables, including
object status and file transfers.
Object 1 (Functional Profile 6010) – Handles drive specific variables including variables
related to how the drive functions such as drive speed and drive current.
Siemens Building Technologies, Inc. 3