User Manual

TM 40/40L, Rev (6) February 2013
Performance Considerations 13
1.5.5 Output Signals
Outputs are available according to the default configuration or the wiring
options selected for the 40/40L, LB, L4, L4B detector. Determine the
outputs for your model according to Table 6.
The detector incorporates several types of output suitable to different
control systems:
 0-20mA (stepped) with HART
 Relays (Alarm, Fault, Auxiliary)
 RS-485 Modbus
Table 6: Available Output Types
Output Type
Version
Detector Status
Alarm relay
40/40L, LB, L4, L4B –
Options 1XXXX, 4XXXX,
5XXXX
The relay is N.O.
40/40L, LB, L4, L4B –
Options 2XXXX, 3XXXX
The relay is N.O. and N.C.
Auxiliary relay
40/40L, LB, L4, L4B –
Options 4XXXX and
5XXXX
The relay is N.O.
Fault relay
40/40L, LB, L4, L4B –
Options 1XXXX, 2XXXX,
4XXXX
The relay is N.C. energized
40/40L, LB, L4, L4B –
Options 3XXXX, 5XXXX
The relay is N.O. energized
0-20mA
current output
40/40L, LB, L4, L4B –
Option 1XXXX
SINK Option, (can be
changed to Source – see
Figure 10, Figure 11 and
Figure 12)
40/40L, LB, L4, L4B –
Options 2XXXX and
3XXXX
SOURCE Option with the
HART protocol
RS-485
All versions
Modbus protocol