Omni 4000 Series Installation Manual page 188

Refer to Figure A-7 for default input jumper settings: Inputs Ch1 = 4-20mA, Ch2 = 4-20mA,
Ch3 = DC coupled Pulse, HI threshold, and Ch4 = DC coupled Pulse, Hi threshold.
A.6 HART HT and HM Modules
The HART module is shipped as one of two: a 68-6207-HT or 68-6207-HM. The HT option is for
use in point-to-point systems. The HM option can be used in point-to-point, multi-drop, or multi-
variable mode systems.
For both option types, the HART module provides the following:
•
Four independent HART FSK networks
•
Two 4-20 mA Analog Outputs
•
Maximum of six modules per OMNI 7000
•
Point-to-point transmitter connections with the HT option
•
Multi-drop and multi-variable transmitter connections with the HM option
•
Four devices per network in multi-drop mode
A.7 HART Module Setup
Assign a unique address to each module installed into the OMNI flow computer by positioning
jumpers as indicated in Figure A-8.
Loop power for each HART network must be provided externally by using the OMNI 7000
+24 VDC terminals or an external power supply. Loop load resistors are provided on the module
for convenience and can be selected as being OUT of circuit, 250 ohms, or 500 ohms. When in
the OUT position, a load resistor from 250 ohms to 600 ohms must be provided externally.
Page A-10
OMNI 4000/7000 Installation Guide – Rev H
AC DC AC
AC DC AC
INPUT4
INPUT3
Figure A-7: E Module Jumper Settings
Jumper Settings
INPUT1
RTD
4-20
INPUT2
RTD
4-20
INPUT4 THRESHOLD
INPUT3
JUMPER
OUT=LOW