Allen-Bradley 1771-IVN

The 1771-IVN DC input module is a source input and requires a sink output. A source input provides a positive voltage path and a sink output provides a path to ground. The module has 32 status indicators on the module front plate. These represent the control status of the inputs. Each indicator is lit when voltage is present at the corresponding input.

Your module receives its power for internal logic circuitry through the 1771 I/O chassis backplane from the chassis power supply. The module requires 280mA from the output of this supply. To calculate the requirements for the backplane power supply, add 280mA to the power requirements of all other modules in the I/O chassis. Calculating the requirements will prevent an overload to the chassis backplane and/or backplane power supply.

Technical Specifications:
Inputs per module: 32
Module Location: 1771-A1B thru -A4B I/O Chassis
Input Voltage Range: (+dc) 10 to 30V dc
Nominal Input Current: 4.5mA @ (+dc - 10V dc)
Minimum Off-state Current: 1.7mA @ (+dc - 5V dc)
Maximum Off-state Voltage: (+dc - 5V dc)
Minimum Onstate Voltage: (+dc - 10V dc)
Input Impedance: 2.2K


Each module condenses two full module groups (32 inputs) into each I/O chassis slot. For example: - Module group 1 = inputs 00 through 17 - Module group 2 = inputs 00 through 17 (module group 2 represents the second set of inputs).