The Allen-Bradley 1756 Ib16 module is an important component of the ControlLogix system, and it provides 16 digital inputs for controlling devices. This module is used in industrial applications to detect signals from discrete switches, pushbuttons, and other on/off devices, which can then be used to control logic functions and other processes.
The Ib16 module is designed to provide reliable and accurate input data to the controller, even in harsh environments. It is designed to meet the stringent requirements of standards like IEC 61508, CE Marked, and UL Listed. The module is also RoHS compliant, meaning it can be used in a wide range of applications.
The 1756 Ib16 module has a maximum current rating of 7 mA with two isolated channels, a minimum current rating of 2 mA, and a voltage rating of 24 VDC. It has a total of 16 digital inputs that are rated at 30 VDC with a maximum current of 6 mA and a minimum current of 5 mA. The module is protected against short circuits and reverse polarity, and it has EMC immunity for better reliability.
Connecting the Module to the ControlLogix System
The 1756 Ib16 module is connected to the ControlLogix system through a ribbon cable which is connected to an I/O slot on the backplane. Depending on the type of connection required, the module can be attached to the ControlLogix system using either a USB or Ethernet cable. The module should be securely mounted to the DIN rail in order to protect it from any shock or vibration. It is important to note that all modules must be configured before they can be used in the system.
The wiring diagram for the 1756 Ib16 module is relatively simple. The power source is connected to the terminal block on the back of the module, while the inputs are connected to input terminals on the front of the module. The input signals must be connected according to the correct polarity, and the appropriate shielding should be used to protect the module from electrical interference.
Input and Output Types
The 1756 Ib16 module supports both analog and digital inputs. It can accept inputs from standard switches, pushbuttons, sensors, and other discrete devices. It can also accept input from analog devices, such as temperature and pressure sensors. The module can output both digital and analog signals, and it can be used to control and monitor various processes and equipment.
Number of Digital Inputs
The 1756 Ib16 module has a total of 16 digital inputs. These inputs are rated at 30 VDC and can handle up to 6 mA of current. The inputs can be used to detect a variety of digital signals, such as switch closures, sensor signals, and other on/off signals.
The 1756 Ib16 module has a maximum power consumption rating of 1.6 W. This rating is based on a nominal DC voltage of 24 VDC and includes all of the power consumed by the module's internal circuitry.
Operating Voltage Range
The operating voltage range of the 1756 Ib16 module is between 18 and 30 VDC. The voltage must be within this range for the module to function properly. It is important to note that if the voltage exceeds the specified range, the module may be damaged.
Maximum Distance Between Module and Controller
The maximum distance between the 1756 Ib16 module and the ControlLogix controller is 10 meters (32.8 feet). This is the total length of the ribbon cable used to connect the module to the controller. The maximum distance can be extended if using an Ethernet cable, but this is not recommended due to potential signal loss.
The Allen-Bradley 1756 Ib16 module is a reliable and versatile digital input module for the ControlLogix system. It provides 16 digital inputs for monitoring and controlling devices, and it can accept both analog and digital signals. It is designed to meet strict safety and reliability standards, and it has a maximum power consumption rating of 1.6 W. The module must be configured before it can be used in the system, and the maximum distance between the module and the controller is 10 meters.
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