Rockwell Automation T8834 User Manual

SDS-8834

erminals

Trusted

Industrial Control System

TrustedTM 20 Channel Analogue/Digital Isolated Input FTA - T8834

GENERAL ASSEMBLY

TB3 Screw T

Channel 1 Circuit

Channel 2 Circuit

Channel 3 Circuit

Channel 4 Circuit

Channel 5 Circuit

Channel 6 Circuit

Channel 7 Circuit

Channel 8 Circuit

Channel 9 Circuit

Channel 10 Circuit

Channel 11 Circuit

Channel 12 Circuit

CON1

DIN41612

Channel 13 Circuit

Channel 14 Circuit

TB2 Screw Terminals

TB1 Screw Terminals

Channel 15 Circuit

Channel 16 Circuit

Channel 17 Circuit

Channel 18 Circuit

Channel 19 Circuit

Channel 20 Circuit

DESCRIPTION

The Trusted T8834 is designed to act as the main interface between a field device generating a 4-20mA signal and the Isolated Analogue Input Module T8433. When used with a Trusted each of the inputs is powered from the field or FTA as required, and individually isolated.

The FTA allows the field loop to be wired in a variety of configurations. The field device may be connected with either three or four wire power from the FTA, or the device may be powered locally with the module input circuit powered from the device. The device may source current to the loop, or sink it to the loop or to the local power supply. Four terminals are provided to allow this versatility.

The module input circuit is powered by current passed through a zener diode. The field input loop is fed through a 100R precision resistor to provide a voltage measurement in the module. Each field device is isolated from the other devices and from ground.

The cable linking the 20 channels on the input module to the FTA is terminated at a 96-way socket. A row of eighty screw terminations is used for the field loops, with another forty terminations providing local isolated power connections.

The FTA is designed to be mounted on either of the TS32 or TS35 DIN rails in the horizontal or vertical positions as required.

20 Channel Isolated AI/DI FTA (Field Termination Assembly)

T8433 TMR Isolated Analogue Input module

FEATURES

 Twenty isolated input

channels per FTA

 Standard DIN rail

compatibility

 Simple installation and

connection

 Versatile circuit operation

Issue 2 Jan 2006

SDS-8834

Trusted

Industrial Control System

TrustedTM 20 Channel Analogue/Digital Isolated Input FTA - T8834

BLOCK DIAGRAM

TB3 +

TB2 +

7V5

TB1 A

100R

TB1 B

TB2 -

Single Channel Schematic

ELECTRICAL SPECIFICATION

Field Current Loop (Per Channel) Field Loop Volt Drop at 20mA Recommended Operating Current Power Consumption (Field Loop)

TB3 -

CON1 VPOWER

CON1 COMMON

4K75

CON1 VSENSE

0 to 30mA

9.5V if loop powered else 2V 0 to 20mA per channel 19mW maximum (if loop powering input)

MECHANICAL SPECIFICATION

Dimensions (HxWxD):

120mm x 336mm x 50mm (4.7ins x 13.2ins x 2 ins)

Weight (fully populated)

500gms (1.1lbs)

ENVIRONMENTAL

Operating Temperature:

-5°C to 60°C (23°F to 140°F)

Operating Humidity:

5 to 95%, noncondensing

Vibration:

10 to 57Hz ±0.075mm 57 to 150Hz 1.0g

Shock:

15g, ½ sine wave, 11ms

EMI (IEC 801):

ESD Air discharge to 15kV. Contact discharge to 8kV

Radiated Fields 10V/m, 27MHz to 500MHz

Transients and Bursts 2kV, 2.5kHz for t=60 seconds

ICS Triplex

Technical data sheets are intended for information and guidance. The Company has a policy of continual product development and improvement. Specifications are subject to change without notice. For latest information, visit our Websi te:- www.icstriplex. com