4
Initial setup
4.1
Continuous feature test
The detector is supplied with default settings, including a continuous feature test.
To change these settings, refer to the
Spectrex SharpEye 40/40C and D Series Flame
.
During normal operation, the detector tests itself continuously and indicates a fault if a
failure is found. This type of test complies with SIL-3 requirements.
The detector continuously tests:
•
Input voltage level
•
All internal regulator voltage level
•
Voltage level status of sensor and sensor circuitry for noise or disconnection in the
electronic circuitry
•
0-20 mA level output
•
Relays and heater operation
•
Processor watch dog
•
Software
•
Memory
•
Oscillator frequency
4.2
Response to fault indication
If a failure is found, the detector indicates by:
•
Light-emitting diode (LED): yellow flashes (4 Hz)
•
Fault relay opens
•
0-20 mA: 1 mA default
•
Analog voltage output: 0 V output
(SharpEye 40/40D models only)
The fault indications remain until the detector is turned off. The fault indications return if
the fault is still found when power is restored.
4.3
Built-in-test (BIT)
The detector's BIT checks the following:
•
Sensors
•
Window cleanliness
Reference Manual
Initial setup
00909-0100-4975
December 2021
SharpEye 40/40
27
Summary of Contents for SharpEye 40/40C Series
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Page 10: ...Introduction Reference Manual December 2021 00909 0100 4975 10 Spectrex net ...
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