Spectrex 20/20MI - Mini Triple IR (IR3) Flame Detector - Manual (Page 38)

Spectrex Inc. - SharpEye TM Mini IR3 Flame Detector Manual – TM 787100, Rev. D April 2011
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4-20 mA Output
This output is used for analog, 4-20 mA current output as specified in
Paragraph 5.1D
PIN No. 11 or pink wire is used as output (+).
PIN No.12 or blue wire is used as input (-)
See Appendix A for more details.
RS-485
This output is used for communication network as specified in Appendix A.
PIN No. 10 or white wire is the positive (+) lead.
PIN No. 9 or gray wire is the negative (-) lead.
Ground
Pin No. 12 or green wire is used for Ground connection.
6.8 Operation Mode
The detector is supplied with a default function set up as follows:
Table 15: The detector default set up
Function 20/20MI-1 20/20MI-3
Sensitivity 20 5
Delay A A
Alarm Latch NO NO
Automatic BIT YES YES
Alarm BIT NO NO
The function set up can be reprogrammed by the user through RS-485 using a PC
with a Spectrex Host or through use of a handheld unit. Refer to TM 784050 for
instructions.
Programmable Function:
Modes of operation are programmable with a PC or Handheld unit according to the
selection table in Paragraph 4.3.2 and Refer to TM 784050.
Address:
The detector has the capability of acting as an addressable device.
The detector provides 247 (1-247) addresses, which can be used by the RS-485
communications link as described in paragraph 4.3.2 d - and Refer to TM 784050.
Alarm Delay:
An Alarm Delay may be required for certain applications. The detector has an
Alarm Delay that permits time delays from 0, anti-flare, 3, 5, 10, 15, 20 and 30
seconds respectively. The delay can be defined by the RS-485.
Refer to TM784050.