Spectrex 40/40UFL Ultra Fast UV/IR - Manual (Page 29)

TM 40/40UFL, Rev (2) August 2013
Internal Detector Tests 17
1.6.2.2 Automatic BIT
The detector automatically performs a BIT every 15 minutes. A successful
BIT sequence does not activate any indicator.
All outputs of BIT results function as described in Table 8 and Table 9, and
the BIT is automatically executed every 1 minute. This continues until a
successful BIT occurs, when the detector resumes normal operation.
Table 8: Results of a Successful BIT
Output Result
Fault relay  Wiring options 1, 2, 4: remains CLOSED
 Wiring options 3 and 5: remains OPEN
0-20mA
output Wiring option 1, 2, 3: Normal (4 mA)
Power LED Green, Flashing, 1 Hz On (Normal)
Table 9: Results of an Unsuccessful BIT
Output Result
Fault relay  Wiring option 1, 2, 4: changes to Open
 Wiring option 3 and 5: changes to Closed
0-20mA output Wiring option 1, 2, 3: BIT Fault (2mA)
Power LED
Yellow, Flashing, 4 Hz
BIT procedure Performed every 1 minute