Spectrex SharpEye 40/40UFL, Руководство пользователя

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Product Overview
30 SharpEye™ Ultra Fast UV/IR Flame Detector User Guide
2.4.7 Auxiliary Relay as End-of-Line
The auxiliary relay can be used as End-of-Line in models with suffix – 4XXXX and
5XXXX only. In this case, the auxiliary relay is active as long as the detector is
powered.
2.5 Internal Detector Tests
The detector performs 2 types of self-tests:
• Continuous Feature Test , page 30.
• Built-In-Test (BIT) , page 31.
2.5.1 Continuous Feature Test
During normal operation, the detector tests itself continuously and indicates a
fault if a failure is found. This type of test complies with SIL-2 requirements.
The detector continuously tests:
• Input voltage level
• All internal regulator voltage levels
• Voltage level status of sensor and sensor circuitry for noise or disconnection
in the electronic circuitry
• 0 – 20mA level output
• Relays and heater operation
• Processor watchdog
• Software
• Memory
• Oscillator frequency
2.5.2 Response to Fault Indication
If a failure is found, the detector indicates by:
• Fault relay:
• Opens in wiring options 1, 2, and 4
• Closes in wiring options 3 and 5
• 0 – 20mA: indicates fault (0mA or 2mA) in wiring options 1, 2, and 3
• LED – Yellow flashes (4Hz)
• Correcting the fault
The fault indications remain until the detector’s power is removed. The fault
indications return if the fault is still found when power is restored.