Spectrex 20/20MPI - Commercial IR3 Flame Detector - Manual (Page 41)

TM 20/20MPI, Rev (D) September 2013
Protective Cover Installation 29
 0-20 mA Output for Model 20/20MPI-M
This output is used for stepped 0-20 mA current output:
Terminal # 8 output (+) refers to terminal 2 RTN. See Typical Wiring
Configurations on page 41 for more details.
 RS-485
This output is used for communication network as specified in Typical
Wiring Configurations on page 41.
 Terminal # 3 RS485 (+)
 Terminal # 4 RS485 (-)
6.7 Protective Cover Installation
The Protective Cover need only be used if required at a specific location,
such as protection from water drips, high dust etc.
After wiring the detector, place the Protective Cover as in Figure 6. Screw
the Hex screw using the 3 mm Hex Key.
Figure 6: Protective Cover