T7420A

Overview

T7420A is an Allen-Bradley ICS Triplex analog input module with 60 Hz rejection and fast response.

Identity

• Part Number: T7420A

• Type: Analog Input Module

Input Configuration

• Number of Inputs: 8 differential or 16 single-ended (jumper selectable)

• Inputs per Group: 8 single-ended or 4 differential

• Safetybus Power: 1.85 load units

Measurement Ranges

• Voltage:

  • 0 to +10 V

  • –10 to +10 V

  • +1 to +5 V

  • 0 to +5 V

  • –5 to +5 V

• Current (with external 250 Ω resistors):

  • 0 to +20 mA

  • –40 to +40 mA

  • +4 to +20 mA

  • –20 to +20 mA

Frequency Response (@ 60 Hz)

• Single-Ended:

  • T7420A: 7.23 Hz / 229 Hz / 18.4 dB

  • T7420AF: 10.6 kHz / 335 kHz / 0.0 dB

• Differential:

  • T7420A: 3.62 Hz / 114 Hz / 24.4 dB

  • T7420AF: 5.31 kHz / 168 kHz / 0.0 dB

Performance

• Data Update Rate:

  • Single-ended (16-channel mode): 3.60 ms continuous

  • Differential (8-channel mode): 1.80 ms continuous

• Isolation: 2500 V minimum (field wiring to control logic)

• Heat Dissipation: 9 W (31 BTU/h)

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