Spectrex 40/40U-UB - UV Flame Detector - Manual (Page 29)

TM 40/40U, Rev (7) July 2013
Internal Detector Tests 17
1.6.2.3 Manual BIT
The BIT is manually initiated by momentarily connecting Terminal 3 with
Terminal 2 (or a switch across these terminals in the safe area).
The results of a successful and unsuccessful Manual BIT are listed in
Table 11 and Table 12.
Table 11: Results of a Successful Manual BIT
Output Result
FAULT relay  Wiring options 1, 2, and 4: remains CLOSED (Normal)
 Wiring options 3 and 5: remains OPEN (Normal)
ALARM relay Activated for 3 sec (only when the function Alarm BIT is
set to YES)
AUXILIARY
relay For wiring options 4 and 5: is activated for 3 sec (only
when the function Auxiliary BIT is set to YES)
0-20mA
output Wiring option 1, 2, 3:
 Initiates 20 mA only when the function Alarm BIT is set
to YES
 Initiates 16 mA when the function Auxiliary BIT is set
to YES and the function Alarm BIT is set to NO
POWER LED Green, Flashing, 1 Hz
Table 12: Results of an Unsuccessful Manual 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: Indicates BIT FAULT (2mA)
POWER LED Yellow, Flashing, 4 Hz
1.6.2.4 Manual BIT only selected
The BIT is initiated manually by momentarily connecting Terminal Number 3
with Terminal Number 2 or a switch across these terminals in the safe area.