Emerson 1700 Core processor connection, FISCO and FNICO approval, A.1.2 Input/output signals

Specifications

Core processor connection

The transmitter has two pairs of wiring terminals for the 4-wire connection to the core processor:

•One pair is used for the RS-485 connection

•One pair is used to supply power to the core processor

Plug connectors accept stranded or solid conductors, 24 to 12 AWG (0,2 to 2,5 mm2).

FISCO and FNICO approval

Model 2700 transmitters with FOUNDATION fieldbus and PROFIBUS-PA are either FISCO or FNICO approved depending on their output code:

•Transmitters with output code E (intrinsically safe FOUNDATION fieldbus) or output code G (PROFIBUS-PA) are FISCO approved with the following entity parameters:

-Ui = 30 V

-Ii = 380 mA

-Pi = 5.32 W

-Ci = 0.0002 µF

-Li = 0.0 mH

•Transmitters with output code N (non-incendive FOUNDATION fieldbus) are FNICO approved

A.1.2 Input/output signals

Input signal from sensor

•4-wire remote: one intrinsically safe 4-wire mating connector

•9-wire remote: two intrinsically safe terminal blocks with 3 sockets and one intrinsically safe terminal block with 4 sockets (only 3 sockets are used)

•Remote core processor with remote transmitter:

-Core processor: two intrinsically safe terminal blocks with 3 sockets and one intrinsically safe terminal block with 4 sockets (only 3 sockets are used)

-Transmitter: one intrinsically safe 4-wire mating connector

Model 1700/2700 transmitters with non-intrinsically safe analog outputs option board (output option code A)

One 4–20 mA output

•Not intrinsically safe

•Internally powered (active)

•Isolated to ±50 VDC from all other outputs and earth ground

•Maximum load limit: 820 Ohms

•Model 1700 can report mass flow or volume flow; Model 2700 can report mass flow, volume flow, density, temperature, or drive gain; transmitters with the petroleum measurement application (API) or enhanced density application can also report standard volume flow and density at reference temperature

•Linear with process from 3.8 to 20.5 mA, per NAMUR NE43 (June 1994)

56 Micro Motion® Model 1700 and 2700 Transmitters