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

The Allen-Bradley 1771-IR is a PLC-5 RTD input that features a natural binary BDC-supported actual temperature and Ohm readings data format. This device does not require any kind of external power. It consists of 6 three-wire RTD Inputs. The channel update resolution for this device brings in a combination of 50ms/6 channel and 16 bits +sign (1.0 Celsius /1.0Fahrenheit/bit). The voltage range for the 1771-IR input module is 100 Ohms platinum and 10 Ohms other. It has a backplane current range of 800mA. 

Technical specifications for 1771-IR

Typical AC Signal Delay (Off)45 (+/- 15) ms

Typical DC Signal Delay (On)10 ms

Wiring Arm1771-WH

External Power RequiredNo

Backplane Current800 Miliamperes

Current RangeN/A

Voltage Range100 Ohms platinum, 10 Ohms other

Channel Update/Resolution50 ms/8 channel; 16 bits + sign (1.0 Celsius/1.0 Fahrenheit/bit)

Data FormatNatural Binary, BDC Actual Temperature, or Ohm Readings

Number of Inputs & Outputs6 Three-Wire RTD Inputs

Module TypeRTD Input

Part Number/Catalog No.1771-IR

Typical DC Signal Delay (Off)50 ms

MountingRack Mountable

BrandAllen-Bradley

ManufacturerRockwell Automation

The DC signal delay in On-state is 10ms and in the Off-state it is 50ms while the AC signal delay in On-state is 45(+/- 15) ms. These input modules have a life of up to 100 million operations because it meets the requirement for a voltage of 10-276V AC. The 1771-IR also helps in the protection of your system by providing appropriate troubleshooting aids. The module indicators show smart input or output status to help you in troubleshooting your device. The 1771-IR features a smart mixture interface to On/OFF devices like switches, motor starters, pushbuttons, pilot lights, and annunciators. This unique feature helps in saving system engineering and spare parts and inventory and training costs as well. The front panel of each of the AC discrete input-output module consists of bright status indicators.