Honeywell XNX User Manual

XNX Universal Transmitter Quick Start Guide
12
Isolation
Isolating power and signal carrying conductors is recommended.
Circuit Protection
Supply circuits must provide over current protection. Class 2 power supplies
are required for 24 volt DC supply. Consider Inrush current in specifying any
DC supply. Power supply range is 16 to 32 VDC for EC and mV versions, 18 to
32 VDC for Searchpoint Optima Plus and Searchline Excel and 16 to 32 VDC
dependent on the limitations of device for the generic 4-20mA input.
Loads
The use of High Inrush or Inductive loads may affect the performance of the XNX.
For best reliability use resistive loads only.
4.2 Distance Considerations for Installation
Types of Installations
There are three basic types of installation: a single transmitter; multiple
transmitters connected to a single power source; and multiple transmitters
connected in a daisy-chain configuration.
Power Source Selection
XNX Universal Transmitter Maximum Power Consumption
Conguration
-40°C to +65°C -10°C to +65°C
HART
over
4-20mA
(watts)
HART over 4-20mA
with Relay, Modbus, or
Foundation Fieldbus
(watts)
HART
over
4-20mA
(watts)
HART over 4-20mA
with Relay, Modbus, or
Foundation Fieldbus
(watts)
XNX with toxic
sensors
5.1 6.2 3.4 4.5
XNX with catalytic
sensors
5.4 6.5 3.7 4.8
XNX with infrared
cartridge
5.4 6.5 3.7 4.8
XNX with Search-
point Optima Plus
8.6 9.7 6.9 8.0
XNX with
Searchline Excel
12.1 13.2 10.4 11.5
Wire Selection
The type of wire used for connections has an effect on the distance of the
installation. This is because some of the voltage is lost in the wire on the way to
the transmitter.

Honeywell XNX Specifications

General

Brand	Honeywell
Model	XNX
Category	Transmitter
Language	English