Powering The Transmitter The First Time - Honeywell XNX-AM Series Technical Manual

XNX Universal Transmitter

Powering the Transmitter the First Time

Detectors Configured for EC/mV/IR (except Searchline Excel)
After mounting, wiring the transmitter, wiring the specific mV or IR
sensor, or installing the EC cartridge, the installation is visually and
electrically tested as described below.
WARNING
!
Warning: This procedure must be performed only by suitably trained personnel
following local and site procedures. Verify that the associated control panel is inhibited
so as to prevent false alarms.
Warning: Do not set the minimum or maximum controller alarm levels at less than
10% or greater than 90% of the full scale range of the sensor. CSA and FM agency
limits are 60% LEL or 0.6mg/m 3 .
1. Verify that the transmitter is wired correctly according to
this manual and the associated control equipment manual.
2. If equipped, unscrew the weatherproof cover, loosen the
sensor retainer locking screw, and unscrew the retainer.
3. For EC sensors, plug in the sensor cartridge, taking care
to align the sensor pins with the connector holes in the
PCB.
CAUTION
!
Caution: For toxic sensors, remove the shorting clip from the bottom of the sensor
prior to installation. No shorting clip is provided with O
4. Refit the sensor retainer, tighten the locking screw and
refit the weatherproof cover.
Installation and Operation
sensors.
2
61
NOTE
!
Note: Before replacing the cover on the transmitter housing, coat the threads with
anti-seize compound to prevent corrosion.
Note: Inspect the cover O-ring for cracking or any other defects that might
compromise the integrity of the seal. If it is damaged, replace with the O-ring supplied
in the official service kit.
5. Apply power to the transmitter. This will in turn provide
power to the sensor.
6. During warmup, the transmitter will be forced to 3 mA
(inhibit mode).
7. The display will enter a start up routine displaying
the initialization screen, then the transmitter loads its
operating system, data from the sensor and checks
if it is the same type transmitter and sensor software
version numbers, gas type, the detection range and span
calibration gas level, estimated time to next calibration
due, and self-test result. The boot-up procedure takes
about 45 seconds. The LCD and LED test is performed
in the initialization after powering on. All LCD pixels
and LEDs (red, green, and yellow) are turned on for 1.5
seconds. The LCD then goes blank and the LEDs turn off.
Figure 60. XNX Initialization and General Status screens