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  • 1771-IVRMN

Overview

Features

  • 12 to 24VDC input voltage range (+DC)
  • Nominal input current (sourced):
    • 8mA @ (+DC - 12VDC)
    • 24mA @ (+DC - 24VDC)
  • 3.0mA @ (+DC - 7VDC) min. off-state current
  • (+DC - 7VDC) max. off-state voltage
  • (+DC - 10VDC) min. on-state voltage
  • Input impedance:
    • 1 to 2K ohms max. (on-state)
    • 2 to 3K ohms max. (off-state)
  • Input signal delay:
    • Low to high propagation delay 15ms (+/-7ms)
    • High to low propagation delay 15ms (+/-7ms)
  • 0.4 to 5.8W power dissipation
  • 1.3 to 19.9 BTU/hr thermal dissipation
  • 74mA @ 5VDC +/-5% backplane current
  • 1,500VAC rms isolation voltage

Description

The Allen-Bradley 1771-IV PLC-5 Digital DC Driver Logic Input Module is compatible with the following 2 and 3-wire devices:

  • DC proximity switches
  • Photoelectric sensors
  • Pushbuttons
  • Limit switches
  • Float switches
  • Selector switches

When using a 3-wire input device, the input device must be capable of sinking an on-state minimum current of 8mA @ 12VDC up to 24mA @ 24VDC. The off-state leakage current of the 3-wire device should not exceed 1mA. 

The module contains input filtering to limit the effect of voltage transients caused by contact bounce and/or radiated electrical noise. The delay due to input filtering is nominally 15+/- 7ms for turning inputs on, and 15+/-7ms for turning inputs off.