Repair Allen-Bradley 1771-IGD PLC-5 TTL Input Module

16 inputs per module.

Repair

Call for pricing
Availability
  • Usually ships in 2-3 weeks

Remanufactured

$112.00
Availability
  • 1 in stock
Part Number
  • 1771-IGDREP
Manufactured

Features

  • Input voltage rating:
    • HIGH = TRUE
      • ON: 2.0 to 5.25VDC
      • OFF: -0.2 to +0.8VDC
    • LOW = TRUE
      • ON: -0.2 to +0.8VDC
      • OFF: 2.0 to 5.25VDC
  • Customer current sink requirements:
    • 7mA max. (source per input)
    • 0.8mA max. (sink per input)
  • Customer supply voltage:
    • 5.0VDC (+/-0.25V) class 2
    • 50mV peak-to-peak ripple max.
  • 380mA max. customer supply current per module
  • <1ms input signal delay
  • 0.4 to 2.7W power dissipation
  • 1.4 to 9.2 BTU/hr thermal dissipation
  • 5VDC, 130mA max. backplane voltage/current
  • Tested to 600VDC for 1s isolation voltage
  • Open-style enclosure

The Allen-Bradley 1771-IGD PLC-5 TTL Input Module can be used in a Series A or B 1771-A1B, -A2B, -A3B, -A3B1, and -A4B chassis. The module is also compatible in a 1771-AM1 or -AM2 I/O chassis.

The operator can use any TTL device that meets the output logic level specification of -0.2VDC to +0.8VDC (low), and 2.0VDC to 5.25VDC (high).

The module contains input filtering to limit the effects of voltage transients caused by contact bounce and/or radiated electrical noise. The delay due to filtering is less than 1ms. 

For maximum noise immunity, the output of the TTL device should have a pull-up resistor of 1Kohm (typical). Add an external pull-up resistor to the output terminals of the device, if necessary. If a pull-up resistor is added, the TTL device should maintain the low state requirement of -0.2VDC to +0.8VDC with the increased load.