Rockwell Automation T8402 User Manual

SDS-8402

T8402 Trusted Dual 24

Trusted

Industrial Control System

TrustedTM Dual 24Vdc Digital Input Module-T8402

FRONT PANEL

Vdc Digital Input

DESCRIPTION

The Trusted Input Module interfaces to 60 field input devices. A wide input voltage range and programmable thresholds allow the module to be used in current source and current sink configurations. Comprehensive diagnostic tests are performed on each input channel, including tests for stuck on and stuck off failures. Fault tolerance is achieved through Dual Redundancy within the same module for each of the 60 input channels.

Dual 24V dc Digital

When a line-monitoring device is installed at the field switch, the module can detect open and shorted field cables. Line monitoring can be independently configured for each input channel.

The module provides on-board Sequence of Events (SOE) reporting with a resolution of 1ms. A change of state triggers an SOE entry. States are determined by programmable voltage thresholds that can be configured on a per channel basis. When the field voltage and field return are connected to the auxiliary input channels of the module, thresholds can be specified as a ratio of the current field supply voltage.

Each section of the module, referred to as a slice, conditions and measures each channel independently. Each slice is optoisolated up to 2500V dc. Each slice sends its data to a safety layer hardware voter that presents the information from both slices to the Trusted fault is detected on any dual input channel, the Trusted Processor will flag the error, indicating the need to replace the module. The Trusted Processor will continue to use the information provided by the remaining slice until a replacement module is available. Replacement modules can be located in a standby slot next to the module or in a designated SmartSlot with a temporary connection to the same Trusted Termination Assembly.

Modules may be placed in any I/O module slot in a Trusted Chassis or Expander Chassis. Once the I/O module configuration is set, mechanical keying is available on all I/O modules to prevent inserting a module into an incorrect slot.

TMR Processor. When a

Processor

TMR

Configuration of the module is carried out using the Trusted running on an Engineering Workstation. Once configured and loaded into the Trusted replacement modules are on-line educated by the TMR Processor.

Toolset

Controller,

FEATURES

 60 Dual (1oo2D) input channels

per module

 Comprehensive diagnostics

and self-test

 Line monitoring on a per

channel basis

 2500V dc Opto-Isolation

 On-board 1ms resolution

Sequence of Events reporting

 Hot replaceable

 Module fault and status

indicators

 IEC 61508, SIL 3 safety

applications

Issue 5 Jan 2006

SDS-8402

Trusted

Industrial Control System

TrustedTM Dual 24Vdc Digital Input Module-T8402

BLOCK DIAGRAM

ELECTRICAL SPECIFICATION

Number of Inputs Field Common Isolation

Sustained Working ±250V dc

Maximum Withstanding ±2.5kV dc

Input Voltage

Measurement Range ±40V dc

Maximum Withstanding ±100V dc

Channel Input Resistance Power Consumption Sample Update Interval (no filter) Self-Test Interval Sequence of Events

Event Resolution 1ms

Time-stamp Accuracy ±0.5ms

Turn-on/off Voltage Fusing Intrinsic Safety Circuit Type

60 Channels

5k9 12 to 15W 5ms 20s

Configurable None, external if required External barrier Fault tolerant, 1-oo-2D with optional line monitoring

MECHANICAL SPECIFICATION

Dimensions (HxWxD):

241mm x 30mm x 300mm (9.5ins x 1.2ins x 11.8ins)

Weight:

1.13kg (2.5lbs)

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.icstr iplex.com