Omni 4000 Series Installation Manual page 189

Configure each Load Resistor as required for instrument installation as indicated in Figure A-8
(refer to Figure 3-32 through Figure 3-34 for wiring examples).
•
OUT = Externally installed load resistor of 250Ω to 600Ω
•
250Ω = On-board load resistor is installed in the current loop.
•
500Ω = On-board load resistor is installed in the current loop.
MODULE
ADDRESS
1
2
3
4
5
6
Figure A-8: HART Address and Load Resistor Jumpers
A.8 Digital I/O Terminal Board Setup
Each DT module requires a specific unique address of 1 through 3. Position the Address
Selection Switches as indicated in the Address Selection table shown in Figure A-9.
•
Set the COMM LINK TERMINATION Switch to the IN position:
−
If the DT module is the only Digital Terminal module connected to the flow computer
−
If the DT module is positioned at the end of the Comm Link bus. Refer to Digital
Terminal Board #3 in Figure 3-20.
•
Otherwise, set the switch to the OUT position.
Page A-11
OMNI 4000/7000 Installation Guide – Rev H
HT/HM LABEL
AD1
AD2
AD3
Jumper Settings
LEDs
NETWORK 1
LOAD
RESISTOR
OUT
O
250
500O
SELECT APPROPRIATE
LOAD RESISTOR