Product Overview
TM40/40U Rev. (Af), February 2019
27
Table 6: Available Output Types
Output Type
Version
Detector Status
Alarm Relay
40/40U and UB
–
Options 1XXXX,
4XXXX, and 5XXXX
The relay is N.O.
40/40U and UB
–
Options 2XXXX and
3XXXX
The relay is N.O. and N.C.
Auxiliary Relay 40/40U and UB
–
Options 4XXXX and
5XXXX
The relay is N.O.
Fault Relay
40/40U and UB
–
Options 1XXXX,
2XXXX, and 4XXXX
The relay is N.C. energized
40/40U and UB
–
Options 3XXXX and
5XXXX
The relay is N.O. energized
0
–
20mA
Current Output
40/40U and UB
–
Option 1XXXX
Sink with the HART protocol, (can
be changed to Source
–
see
Figure 10, Figure 11, and Figure
12)
40/40U and UB
–
Options 2XXXX and
3XXXX
Source with the HART protocol
RS-485
All versions
Modbus protocol
2.5.6
Detector Status
The possible detector function statuses are listed in Table 7. A more detailed fault
analysis can be seen via HART or RS-485.
Table 7: 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, due
to a software fault, or due to an electrical failure. The
detector will NOT detect fire in this condition.