Emerson B-106-300NH instruction manual Hart Communicator Signal Line Connections

World Class 3000

Instruction Manual

Appendix J Rev. 1.1 June 1995

INSTALLATION

J-4 HART COMMUNICATOR SIGNAL LINE CONNECTIONS

The HART Communicator can connect to the IFT analog output signal line at any wiring ter- mination point in the 4-20 mA current loop.

There are two methods of connecting the HART Communicator to the signal line. For applica- tions in which the signal line has a load resis- tance of 250 ohms or more, refer to method 1.

For applications in which the signal line load re- sistance is less than 250 ohms, refer to method 2.

a.Method 1, For Load Resistance > 250 Ohms

Refer to Figure J-2and the following steps to connect the HART Communicator to a signal line with 250 ohms or more of load resistance.

MICROPROCESSOR

BOARD

I

V

JM6

J1

J2

J3

J4

J5

J6

J7

J8

J9

JM1

INTELLIGENT FIELD

TRANSMITTER IFT 3000

LOOP CONNECTORS

CURRENT/VOLTAGE SELECTION SWITCH

TO "CURRENT" POSITION

INTERCONNECT BOARD

ANALOG OUTPUT R L > 250 W

4-20mA SIGNAL LINE

ANALOG OUTPUT DEVICE

SERIAL PORT & BATTERY LOOP CONNECTORS	USE INTERFACE
CHARGER MUST	00275 0013 ONLY
	SERIAL PORT
NOT BE USED IN
HAZARDOUS AREAS

HART

COMMUNICATOR

LEAD SET

HART COMMUNICATOR REAR PANEL

686002

Figure J-2. Signal Line Connections, > 250 Ohms Load Resistance

J

Rosemount Analytical Inc. A Division of Emerson Process Management Appendices J-3