Product Overview
28
SharpEye™
Ultra Fast UV/IR Flame Detector User Guide
Table 5: Available Output Types
Output Type
Version
Detector Status
Alarm Relay
Options 1XXXX, 4XXXX,
and 5XXXX
The relay is N.O.
Options 2XXXX and
3XXXX
The relay is N.O. and N.C.
Auxiliary Relay Options 4XXXX and
5XXXX
The relay is N.O.
Fault Relay
Options 1XXXX, 2XXXX,
and 4XXXX
The relay is N.C. energized
Options 3XXXX and
5XXXX
The relay is N.O. energized
0
–
20mA
Current Output
Option 1XXXX
Sink with the HART protocol,
(can be changed to Source
–
see Figure 10, Figure 11, and
Figure 12)
Options 2XXXX and
3XXXX
Source with the HART
protocol
RS-485
All versions
Modbus protocol
Analog Output
All Versions
0V during Normal
5V during detection
2.4.6
Detector Status
The possible detector function statuses are listed in Table 6. A more detailed fault
analysis can be seen via HART or RS-485.
Table 6: Detector Status
Status
Description
Normal
Normal operation.
BIT
Built-In-Test being performed.
Warning
Fire detected
–
changed to Warning (pre-alarm state).
Alarm
Fire detected
–
changed to Fire Alarm state.
Latched Alarm
(Optional)
The alarm outputs remain latched on following detection
of a fire that has already been extinguished.
BIT Fault
A fault is detected during BIT sequence or other electric
failure. The detector will continue to detect for fire.
Fault
A fault is detected when the power supply is too low or
due to a software fault or electrical failure. The detector
will
NOT
detect fire in this condition.
In each state, the detector activates different outputs, as specified in Table 7.