Allen Bradley 1746-N2B

Technical Parameter

Voltage Range: 10 - 30 volts DC.

Backplane Current (5 volts DC): 50 milliamps.

Off State Current: 1 milliamps.

Signal Delay: 8 milliseconds.

Operating Temperature: -25 to 60 degrees Celsius (-13 to 140 degrees Fahrenheit).

Nonoperating Temperatures: -40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit).

Relative Humidity: 5% to 95% without condensation.

Operating Vibration: 2 g at 10 to 500 hz.

Operating and Nonoperating Shock: 30 g.

Functions

Monitoring Capability:  Allen Bradley 1746-N2B can be applied to monitoring device or process status, such as switches, sensors, relays, valves, pumps, etc. via its 16 discrete digital inputs.

Isolated Inputs:  The isolation of Allen Bradley 1746-N2B is realized in such a way that while being connected to the module, it allows isolation of field wiring, safeguarding the digital microprocessor of Controllogix from electrical noise and faults.

LED Indicators:  Allen Bradley 1746-N2B comes with LED indicators for visual indication of input status, allowing for easy monitoring and troubleshooting.

Compact Design:  It fits into a standard Controllogix chassis slot, saving space and facilitating installation in control cabinets.

Configurable Input Type:  The input type can be configured to fit an application's exact needs, which contributes to the adaptability of Allen Bradley 1746-N2B across many different types of digital input signals.

Protection Function:  The isolation function of the inputs will ultimately be extremely useful in preventing electrical interference and faults emanating from extending into the control system; this action in itself ensures a better reliability and stability of the whole system, thus reducing the maintenance cost and downtime very dramatically.

Compatibility:  Allen Bradley 1746-N2B has been designed primarily for use in conjunction with Allen Bradley Controllogix automation systems.

Applications

Machine Control:  It is widely adopted by machine control systems to monitor the status of related devices for switch operations, temperature, and others, allowing precise control and fault detection of a machine like that of CNC machines, that of packing machines, and that of assembly lines.

Process Control:  Allen Bradley 1746-N2B  aids such systems by providing intensive monitoring of the status of valves, pumps, and other equipment for smoother production of chemical processes, food processing, and pharmaceutical manufacturing.

Safety Systems:  It monitors the condition of safety devices like emergency stop buttons and door interlocks, thereby enhancing safety for personnel and equipment through speedy detection of safety events so that appropriate safety interventions can be invoked.

Building Automation:  In building automation, the Allen Bradley 1746-N2B is applied for monitoring the status of HVAC equipment, lighting systems, and other building processes, for having an intelligent control in the energy management of buildings, therefore improving energy efficiency and comfort.