Data Aire LonWorks dap4, Инструкция по эксплуатации

Страница: 3 / 10

Dap4 LonWorks Interface Instructions
Document number 600-000-966 Ver. 3
3
1. Introduction
The dap4 LonWorks card (Data Aire P/N 160-700-020) is an optional network card
which allows the dap4 controller to be connected directly to a LonWorks
®
network.
The use of these boards requires knowledge of and experience with the LonWorks
®
network installation and maintenance tools. The LonWorks card can be factory
installed or field installed
.
2. Physical channels
The LonWorks card uses an Echelon
®
FTT-10 transceiver, approved for use on the
TP/FT-10 channel.
This channel has the following main characteristics:

Alllowing the connection of a maximum of 64 nodes for each network
segment;

The nodes can be connected without any restrictions in the topology: that is,
star, ring, on one bus only, or with any combination of these.

Communication speed: 78,125 kbps;

Maximum distance (Belden 85102 cable): 500m for connections between the
nodes with free topology.
3. Layout of the boards
Fig. 1 – LonWorks card
1. Connector to the dap4 controller BMS card.
2. Terminal block for LonWorks® network (GND, A, B).
3. Service pin.
4. Green
service LED.
5. Red fault LED.
For details on the activation of the
service pin , see Connection to the LonWorks
®
network .
4. Meanings of the LEDs
The green service LED:

Signals the status of the node, as per the LonWorks
®
protocol:
Hardware fault: always ON or always OFF;
Node configured (normal operation): ½ second ON, then always OFF;
Node NOT configured: flashing at ½ Hz;
Node without software application: 1 second ON, 2 seconds OFF, then always OFF;
Node in continuous reset: flashing;

Remains on during the activation of the service pin ;