RLE FMS V.1.13 - Manual (Page 25)

rletech.com FMS User Guide 25
2 Getting Started
2.2.2 Universal Input Connections
The eight non-isolated universal inputs are connected to TB2 and TB3. Universal input
channels can be individually configured through the FMS to monitor a 4-20mA signal, a
Normally Open (NO) dry contact, or a Normally Closed (NC) dry contact; see Figure 2.3 for
examples of typical sensor wiring. See Appendix D, “FMS Accessories Wiring” on page 191 ,
for further details on wiring other RLE accessory sensors, or refer to our Falcon Integration
Guide, found online at http://rletech.com/resource/falcon-integration-guide/.
Some temperature and humidity sensors have internal jumper settings that may be used to
select sensor range and output voltage or current. Jumper settings should be set before power
is applied to the equipment. The sensor range (50–95°F, 22–122°F, etc.) should be
documented at this time. The sensor range is required to determine the gain and offset
settings when configuring the input through software.
Note The Falcon has 24VDC available (TB2-1, TB2-2 +24VDC, TB3-9, TB3-10 24VDC comm.) to
power external sensors. The 24VDC external supply is internally fused at 300mA.
Figure 2.3 Universal Input Wiring Examples
Some equipment may have several dry contact outputs with a Common Ground. Connect this
equipment as shown in Figure 2.4 .