Black Box IC108A Guia do Utilizador descarregar pdf (Página 46)

Advant

Smart Device (HART

) Interface User’s Guide

Chapter 2 Installation

2-34 3BUR 001 085R0001 REV A

TRIO Blocks

Analog signals brought into an Advant Controller employing Taylor Remote I/O (TRIO) use

either 6230B Analog Input/Output Blocks, 6231B Current Source Analog Input/Output Blocks

or 6235B Current Source Analog Input Blocks. The 6230B and 6231B TRIO Blocks have

terminations for four analog inputs and the 6235B TRIO Block has terminations for six analog

inputs. The analog information for up to 30 TRIO blocks is communicated to the Advant

Controller via a TRIO Field Bus.

To communicate information from the TRIO blocks to the Advant Controller, a CI560 TRIO

submodule is required for each Field Bus. The CI560 has connections on its front panel for the

physical connection of the Field Bus to the Advant Controller. Please refer to the Taylor Remote

I/O (TRIO) User’s Guide, Advant Controller 410 User’s Guide and the Advant Controller 460

User’s Guide for more information on TRIO connections.

NOTE

• The 24V dc loop power supply isolation of the 6231B or 6235B Current

Source Analog Block is lost because the COM input is common to all the

SHIM Signal- inputs.

• Configurations using 6231B or 6235B Current Source Analog Blocks require

an additional 150 ohm 1% 5W resistor for each smart devices connected to the

block. The resistor should be installed between its SHIM Signal+ and TRIO

block IN contacts.

• To tune a smart device from the field, you can attach a hand-held monitor to

its smart transmitter loop using grapper hooks across the corresponding IN

and JMP terminals of the 6230B Analog Input/Output Block or IN and COM

terminals of the 6231B or 6235B Current Source Analog Block the transmitter

is attached to. Any tuning changes you make to the smart device using the

hand-held monitor are not logged by the Advant OCS.

Figure 2-26 show the typical smart device connections for communication of both analog and

digital signals to TRIO. Figure 2-28 shows the wiring for a 6231B Current Source Analog

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Black Box IC108A Guia do Utilizador Página 46