Master/Slave Network Connections - Honeywell Notifier ID3000 Series Installation & Commissioning Manual

ID3000 Series Installation & Commissioning Manual
EN54-2 : 8.2.4c. Earth
Fault Monitoring is
required.

6.2 Master/Slave Network Connections

The Master/Slave Network master and slave panels use
RS485 signalling to communicate with each other and
with the repeaters. The Network master panel, slave
panels and repeaters must be connected in a 'daisy chain'
arrangement.
The termination resistors must be disconnected from all
stations except the two end stations, as described for
repeaters in Section 6.1 Connecting Repeaters.
The Master/Slave network can comprise a mixture of
ID3000 Series panels, ID2000 Series panels, ID1000
Series panels and repeaters all connected via the RS485
communication link. The following rules concerning Earth
Fault Monitoring (see Section 7.6 Earth Fault
Monitoring) must be followed:
a. The repeaters can be powered from the Auxiliary
Supply Output of the ID3000 or ID2000 Series panels
or an external PSU without causing an Earth Fault.
However, if the repeaters are powered from an
external supply, then this supply must be isolated.
b. The Earth Fault Monitoring can be enabled on the
individual ID3000 or ID2000 Series panels on the
network but any ID1000 Series panel on the network
MUST have its Earth Fault Monitoring is disabled.
c. If an Earth Fault occurs anywhere on the network then
any panel with its Earth Fault Monitoring enabled may
report the Fault.
Note: This is not true for networks that contain only
isolated RS485 connections. In this case, the fault
will be localised to the faulty panel.
d. If any RS485 device other than a repeater or ID1000
Series panel is connected to the network, it MUST be
an isolated device.
43 997-274-000-6, Issue 6
September 2009