Spectrex 40/40M Multi IR Flame Detector - Manual (Page 40)

Multi IR Hydrocarbon and Hydrogen Flame Detector User Guide
28 Connecting the Detector
2.7.1 Verifying the Detector Wiring
The detector has five output wiring options within the Exde integral terminal
section of the enclosure. There are 12 terminals labeled 1-12.
Table 15 describes the function of each terminal for all the wiring options.
Table 15: Model 40/40M Wiring Options
Wire
Terminal
No. Option 1
Default Option 2 Option 3 Option 4 Option 5
1 +24 VDC +24 VDC +24 VDC +24 VDC +24 VDC
2 0 VDC 0 VDC 0 VDC 0 VDC 0 VDC
3 Manual
BIT
Manual
BIT
Manual
BIT
Manual
BIT
Manual
BIT
4
Fault
Relay N.C.
Fault
Relay N.C.
Fault
Relay N.O.
Fault
Relay N.C.
Fault
Relay N.O. 5
6 Alarm
Relay N.O.
Alarm
Relay N.O.
Alarm
Relay N.O.
Alarm
Relay N.O.
Alarm
Relay N.O.
7 Alarm
Relay C
Alarm
Relay C
Alarm
Relay C
Alarm
Relay C
Alarm
Relay C
8 0-20mA
In
Alarm
Relay N.C.
Alarm
Relay N.C.
Auxiliary
N.O.
Auxiliary
N.O.
9 0-20mA
Out
0-20mA
Out*
0-20mA
Out*
Auxiliary
C
Auxiliary C
10 RS-485+
(1)
RS-485+
(1)
RS-485+
(1)
RS-485+
(1)
RS-485+
(1)
11 RS-485-
(1)
RS-485-
(1)
RS-485-
(1)
RS-485-
(1)
RS-485-
(1)
12 RS-485
GND
RS-485
GND
RS-485
GND
RS-485
GND
RS-485
GND
*Available with the HART protocol.
Notes:
 RS-485 is used for communication network as specified in Appendix C
(Terminals 10, 11, 12) and to connect (in safe area) to PC/Laptop for
configuration/diagnostics.
 Alarm relay:
 N.O. energized contact in wiring options 1, 4, 5.
 N.O. and N.C. energized in options 2 and 3.
 0-20mA is ‘Sink’ in option 1 and ‘Source’ in option 2 and 3.
 0-20mA 'Source' in options 2 and 3 available with the HART protocol.
 In Wiring Option 1, link Terminals 1 and 8 to change the mA output to
‘Source’.