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Chapter 1. OVERVIEW AND PRODUCT CONFIGURATION
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Security function
The
FRS100
is designed to ensure safety, and plays an important safety role by
monitoring the burner operation and the flame.
1. Combustion monitoring and safety shutoff
• Detects flame failure in the burner and quickly shuts off the fuel and shuts
down the burner.
• When an ignition failure, flame failure or flame-out occurs, the
FRS100
fol-
lows a fixed sequence in shutting down each piece of equipment.
2. Startup, operation, and shutoff of combustion equipment
• The
FRS100
operates each device according to a predetermined sequence
and timing.
3. Safe startup
• At every startup signal, the
FRS100
checks for false flame in the flame detec-
tor and flame detection circuit.
• If a problem is detected, the
FRS100
does not start the burner.
4. Redundant design
• Maintains safety even if its own self-check circuit fails.
• Will not deviate from the proper ignition sequence.
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Precautions for facility instrumentation
In designing facilities that use combustion safety devices, be sure to give careful
consideration to the safety guidelines listed below.
• For safety standards for industrial facilities using combustion equipment, see the
technical guidelines published by the Ministry of Health, Labour and Welfare
• For general safety rules for industrial combustion furnaces, see JIS B 8415.
• For technical safety guidelines for gas combustion furnaces in industrial use, see
publications by the Japan Gas Association.
• For technical safety guidelines for gas boiler combustion equipment, see publica-
tions by the Japan Gas Association.
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Important points for ensuring safety
1. Connect the load directly to the
FRS100
.
2. Design the interlock so that it can directly cut off power to the load.
3. Be sure to use a safe startup circuit upon startup.
4. Do not set up a bypass, such as manual operation, for any load.
5. Have a redundant main valve and pilot valve.
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Precautions for system design
Since the
FRS100
does not have purge or ignition functions, they must be provid-
ed externally.
