Azbil AUR450C - Chapter 1: Overview; Product Overview and Functionality; Key Features and Capabilities

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Chapter 1. OVERVIEW
 Overview
The AUR450C Dynamic Self-Checking Burner Controller (hereafter the/this
device) is a flame safeguard controller that safely and automatically ignites and
monitors a gas or oil burner using the correct sequence of steps. It executes both
batch and continuous operations in combination with the AUD300C Advanced
Ultraviolet Flame Detector or the AUD500C Explosion-Proof Advanced Ultraviolet
Flame Detector.
This device monitors combustion while continuously checking the tube unit of
the AUD300C/500C and the flame detection circuits by driving the shutter of the
AUD300C/500C.
The device has a 7-segment display and communications function. Flame volt-
age, sequence status and alarm codes are displayed. For effective maintenance and
troubleshooting, a personal computer can be used to read data such as the system
status before the occurrence of various errors, past alarm history, operation time,
and number of combustion starts.
 Features
1. Safety standards
* Self-declaration of conformity to standards is not permitted for combustion
safety equipment.
This product is certified to meet standards as noted below.
•
UL: File No. MH27717
•
CE: Gas Appliance Directive 0063BS1427
•
FM: File No. 0003059531
2. Ignition sequence
Either 4-second or 8-second “Safety Time” (ignition trial time) is selectable by
model number. Either an intermittent or an interrupted pilot can be used, se-
lectable by output terminal.
3. Instrumentation and handling
This model requires less mounting space than a conventional model because of
its compact design. Since wiring can be done at the subbase, mounting or dis-
mounting the controller can be done with ease.
Flame monitoring output and alarm output contacts can be used as independent
non-voltage contacts. There is an input terminal for remote reset, or reset can be
done from the operating panel.
4. Display function
The LED indicators, which are especially useful for maintenance and trouble-
shooting, can be used to check the progress of the ignition sequence, the status
of flame detection, alarms, and the occurrence of events.
The LED indicators change color (green/orange/red) depending on the flame
voltage level. The 7-segment display is used to check sequence codes, alarm
codes, and event codes.