ICS Triplex T8403 Trusted TMR 24V dc Digital Input Module

Specifications:

Item Description

Backplane (IMB) Supply

• Voltage: 20 Vdc to 32 Vdc

• Power: 20 W

Field Supply

• N/A

Maximum Power Dissipation

• 29 W

Module Location

• T8100, T8300 I/O Module Slot

Isolation

• Field Common: 50 V Reinforced (continuous) [Type tested at 2436 Vdc for 60 s].

• 250 V Basic (fault): [Type tested at 2436 Vdc for 60 s].

• Channel to Channel: None

• Fusing: None

Number of Inputs

• 40

Input

• Impedance: 5 kΩ

• Measurement Range: -6 to +36 Vdc

• Thresholds: Configurable

• Maximum Withstanding: ±50 Vdc

• Safety Accuracy: 0.5 Vdc

• Intrinsic Safety: None - External barrier required

Sequence of Events

• Event Resolution (LSB): 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 – Operating and Storage

• 10% – 95%, noncondensing

Environmental Specifications

• Refer to Trusted 8000 Series International Safety and Environmental Approvals, publication ICSTT-TD003

Dimensions

• Height: 266 mm (10.5 in)

• Width: 31 mm (1.2 in)

• Depth: 303 mm (12.0 in)

• Weight: 1.18 kg (2.6 lb)

Description

The Field Termination Unit (FTU) is the section of the I/O Module that connects all three FIUs to a single field device. The FTU primarily contains passive components necessary for front-end signal conditioning, field signal overvoltage protection, and EMI/RFI filtering. When installed in a Trusted Controller or Expander Chassis, the FTU field connector interconnects to the I/O cable assembly attached at the rear of the Chassis. The SmartSlot link is passed from the HIU to the field connections via the FTU. These signals go directly to the I/O cable assembly and maintain isolation from the I/O signals on the FTU. The SmartSlot link is the intelligent connection between Active and Standby Modules for coordination during Module replacement. The Field Interface Unit (FIU) is the section of the Module that contains the specific circuits necessary to interface to the particular types of field I/O signals. Each Module has three FIUs, one per slice. For the TMR 24 Vdc Digital Input Module, the FIU contains an individual analog to digital (A/D) converter for each of the 40 field inputs. The FIU receives isolated power from the HIU for logic. The FIU provides additional power conditioning for the operational voltages required by the FIU circuitry. An isolated 6.25 Mbit/s serial link connects each FIU to one of the HIU slices.

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