Azbil AUR450C - Design Safety Directives and Key Points; Model Selection Guide

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Chapter 1. OVERVIEW
 Precautions for designing equipment
When designing facilities that include combustion safety equipment, take the safety
directives listed below into careful consideration.
•
Safety Engineering Directives for Industrial Heating Furnace Combustion
Equipment (Health, Labor and Welfare Ministry)
•
General Safety Code for Industrial Combustion Furnaces (= JIS B 8415)
•
Safety Engineering Directives for Industrial Gas Combustion Equipment (The
Japan Gas Association)
•
Safety Guideline for Gas Boiler Combustion Equipment (The Japan Gas
Association)
•
In the U.S.: Combustion Safety Guidelines (National Fire Protection
Association, NFPA86)
•
Europe: EN 746 (Industrial Thermoprocessing Equipment)
93/68/EEC (CE Marking Directive) amending Appliances Burning Gaseous
Fuels.
Be sure to refer to the laws and standards of the relevant country when designing
equipment.
z Important safety points
•
Directly connect the load to this device.
•
Structure the interlock so that power to the load can be directly turned off.
•
Use the start check circuit during startup (do not short out the start contact input).
•
Do not make a manual operation circuit or other bypass circuit for any load.
•
Use a redundant shutdown system for both main valve and pilot valve.
z Precautions for system design
Use external equipment to make a purge function, taking into consideration the
purge conditions and time settings.
 Model selection table
The following shows the model selection table for this device:
Basic
model No.
Safety
time
Standards
compliance
Flame failure
response time
Power
supply
Additional
processing 1
Additional
processing 2
Description
AUR450C Dynamic self-checking burner controller
4 4±1 s
8 8±2 s
2 With standards compliance
2 1.5 s Nominal (2 s maximum)
3 3 s Nominal (4 s maximum)
1 100 V AC CE, UL, FM standards
2 200 V AC CE, FM standards
3 120 V AC CE, UL, FM standards
5 230 V AC CE, FM standards
0 -
00 Standard (no add. processing)
D0 Inspection certificate
T0 Tropicalization
DT Inspection certificate and tropicalization