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Spectrum VIR VI – Scanner Module
The Spectrum VIR VI scanner module utilizes a microprocessor
to continuously monitor signals from the viewing heads. Using real-time
spectral recognition algorithms and user defined rules, the scanner
module detects the flame condition and provides analog and digital
flame status signals for the boiler control system. Each module
has two independent channels and can monitor two separate viewing
heads.
Each module has five available flame output relays
(Form A) and two isolated analog outputs. For dual fuel applications,
each module has four discrete inputs. These inputs are typically
used to switch between preset configurations when a different fuel
is selected.
The scanner module is powered by redundant 24VDC
supplies to ensure uninterrupted operation.
The scanner module is backed up by a number of hardware
safeties:
- An independent on-board watchdog timer is used to ensure the continuous
integrity of the flame scanner system.
- A hardwired minimum brightness requirement ensures constant "black
furnace" protection.
- Any internal fault will result in a no-flame condition.
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