Allen-Bradley/Rockwell Automation 1771-IC field wiring arm

The Allen-Bradley 1771-IC is a digital input module in the 1771 Series of Digital I/O Modules used in the assembly of PLC-5 Systems. It features input filtering that limits and suppresses the effects of voltage transients caused by electrical noise and/or contact bounce. This decreases the occurrence of electrically-related downtime, and doubles or triples product life. Plus, this DC module is shipped in a static-shield bag for protection against electrostatic discharge. The 1771-IC Digital DC Input is a sink-type (source load) module with a 10-60V DC voltage category and total of 8 inputs. It receives power via the 1771 I/O backplane from the power supply and it has a 42-56V DC operating voltage range. It requires a 74mA backplane current load from the supply’s output. Its maximum off-state current is 3.7 mA. Due to input filtering, it has a typical signal delay of 17 (±7) ms when turned on and of 20 (±7) ms when turned off. The 1771-IC Module works with 2 and 3–wire devices including DC proximity switches, limit switches, float switches, pushbuttons, photoelectric sensors, and selector switches. For 3-wire applications, the off-state leakage should not exceed 4mA. It uses wiring arm with catalog number 1771-WA.

Technical specifications for 1771-IC

ManufacturerRockwell Automation

BrandAllen-Bradley

Part Number/Catalog No.1771-IC

Module TypeDigital DC Input Module

Number of Inputs8 Inputs

Voltage Category10-60 Volts DC, Sink (Source Load)

DC Operating Voltage42-56 Volts

Backplane Current74 Miliamperes

Max DC Off-State Current3.7 Miliamperes

Typical DC Signal Delay (On)15 (+/- 7) ms (Digital Filter)

Typical DC Signal Delay (Off)N/A

Wiring Arm1771-WN

CoatingConformal Coat

Typical AC Signal Delay (Off)20 (+/- 15) ms

Dimensions3.5 x 6.5 x 2.0 in (89 x 165 x 51 mm)