T8403C Trusted TMR 24 Vdc Digital Input Module , China T8403C Trusted TMR 24 Vdc Digital Input Module Manufacturers, Suppliers, Factory

Overview

Place of Origin:	USA
Brand Name:	ICS TRIPLEX
Model Number:	T8403C
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Parameter	Value
Part Number	T8403C
Part Name	Trusted TMR 24 Vdc Digital Input Module
Dimensions	3 × 30.3 × 26.5 cm
Weight	1.18 kg
Backplane (IMB) Supply Voltage	20 to 32 Vdc
Backplane Power	20 W
Field Supply	N/A
Maximum Power Dissipation	29 W
Module Location	T8100 / T8300 I/O module slot
Field Common Isolation	50 V reinforced (continuous); 250 V basic (fault); type tested at 2436 Vdc for 60 s
Channel-to-Channel Isolation	None
Fusing	None
Number of Inputs	40 channels
Input Impedance	5 kΩ
Measurement Range	-6 to +36 Vdc
Thresholds	Configurable
Maximum Withstanding Voltage	±50 Vdc
Safety Accuracy	±0.5 Vdc
Intrinsic Safety	None (external barrier required)
Event Resolution	1 ms
Time Stamp Accuracy	±10 ms
Operating Temperature	0°C to +60°C (+32°F to +140°F)
Storage Temperature	-25°C to +70°C (-13°F to +158°F)
Relative Humidity	10–95% RH (non-condensing)

Description

T8403C Trusted TMR 24 Vdc Digital Input Module is a high-integrity industrial safety input module designed for critical process automation systems. It interfaces with multiple field devices and is built to ensure reliable digital signal acquisition in safety-critical environments.

Applications

Petrochemical Refineries: Used in ESD/FGS systems for dense monitoring of valve and pressure switch signals in hazardous zones.

Thermal Power Plants: Applied in FSSS and turbine trip systems for fast 40-channel input event capture during faults.

Coal Gasification Plants: Installed in interlock systems for processing heterogeneous switch signals with configurable thresholds.

Offshore Platforms: Used in control cabins for isolated digital input monitoring in harsh marine conditions.

Pipeline Stations: Deployed in unmanned valve stations for real-time monitoring of shutdown valve status.

Features

40 Triple Modular Redundant (TMR) input channels per module.

Comprehensive, automatic diagnostics and self-test.

Selectable line monitoring per channel to detect open circuit and short circuit field wiring faults.

2500 V impulse withstand opto/galvanic isolation barrier.

Onboard Sequence of Events (SOE) reporting with 1 ms resolution.

Installation

To install the module:

1. Ensure that the field cable assembly is installed and correctly located.

2. Release the ejector tabs on the module using the release key. Ensure that the ejector tabs are fully open.

3. Holding the ejectors, carefully insert the module into the intended slot.

4. Push the module fully home by pressing on the top and bottom of the module fascia.

5. Close the module ejectors, ensuring that they click into their locked position.

FAQ

Q1: Can T8403C be installed in standard power slots or third-party PLC racks?
A: No. It must be used only in Trusted T8100 or T8300 I/O chassis with dedicated backplane interfaces.

Q2: What is the maximum withstand voltage of T8403C if external surge occurs?
A: Input circuitry supports up to ±50 Vdc with 5 kΩ input impedance protection.

Q3: Can T8403C directly connect to Zone 1/Zone 2 field switches in hazardous areas?
A: No. External safety barriers are required as it has no intrinsic safety design.

Q4: What is the maximum power dissipation of T8403C under full 40-channel load?
A: Maximum power dissipation is limited to 29 W (20 W nominal consumption).

Q5: Can T8403C detect switch bounce shorter than 3 ms?
A: Yes. It provides 1 ms SOE resolution, sufficient for sub-3 ms event capture.