Overview; Software Version; Introduction; About This Manual - Danfoss Metasys N2 Operating Instructions Manual

Overview

1 1
1 Overview

1.1.1 Software Version

This guide can be used with all VLT HVAC Drive frequency converters with
software version 3.4x and VLT AQUA Drive frequency converters with

1.1.2 Introduction

The frequency converter control board is program selectable
for use with the Johnson Controls Metasys N2 protocol.
Metasys N2 is a master/slave control network. The physical
layer is RS-485 compatible, half duplex 9600 baud shielded
twisted pair. The N2 software protocol is designed to be
general in nature to accommodate the unique properties each
device type may have. Every device connection to the N2
network can be thought of as a small data manager. Data
points in the database are classified as analog I/O (floating
point), binary I/O or integer data points - floats, integers or
bytes. Each data type has its own unique structure defined in
the Metasys N2 system Protocol Specification for Vendors.
The information in this manual is intended to provide you with
comprehensive information on how to install and set up the
frequency converter for communication over a Metasys
network.
2
VLT
VLT HVAC Drive
Software version: 3.4x
and VLT AQUA Drive FC 202 Series
Software version: 1.7x
software version 1.7x.
The actual software version number can be read from
par. 15-43 Software Version.
MG.11.G2.02 - VLT
®
Metasys
FC 102 Series
For specific information on operation of the drive, refer to the
VLT HVAC Drive Operating Instructions, MG.11.Ax.yy or the VLT
AQUA Drive Operating Instructions, MG.20.Mx.yy.

1.1.3 About this Manual

This manual is for both instructional and for reference
purposes. This manual can also serve as a guideline when you
specify and optimize your communication system.
It is highly recommended that you read this manual in its
entirety before initiating any programming. It is assumed that
the user has full knowledge of the capabilities and limitation
of the controller node in addition to full knowledge of the
frequency converter.

1.1.4 References

In addition to this manual, the following two manuals should
be consulted: VLT HVAC Drive Operating Instructions, MG.
11.Ax.yy, VLT AQUA Drive Operating Instructions, MG.20.Mx.yy
and Johnson Controls METASYS N2 System Protocol Specification
for Vendors, Johnson Controls number 04-3402-22, rev A.
®
is a registered Danfoss trademark