A-B 1756-IF4FXOF2F ControlLogix Discrete High-Speed Analog I/O Module

The 1756-IF4FXOF2F is a ControlLogix discrete high-speed analog I/O module.

It has four (4) high speed, sub-millisecond, differential inputs and is compatible with input signals ranging from ± 10V 0.... .10V 0... .5V 0... .20 mA.

It also has two high-speed voltage or current outputs with an output signal range of ± 10V 0.... .20 mA.

About the 1756-IF4FXOF2F

The Allen-Bradley 1756-IF4FXOF2F is an analog combo I/O module.

The module is part of the ControlLogix system and is compatible with the 1756 ControlLogix chassis, which requires the 1756-TBS6H or 1756-TBCH removable terminal block enclosure (RTB).

The module has four sub-millisecond high-speed differential inputs and two high-speed voltage or current outputs.

The module has a display that shows the module's health and operating status (e.g., calibration mode).

The 1756-IF4FXOF2F has input ranges of +/-10 volts, 0 to 10 volts, 0 to 5 volts, and 0 to 20 milliamps, and displays over-range when the module is out of these ranges.

Overvoltage protection is 30 volts DC and 8 volts AC/DC. Its open circuit detection is a positive full scale reading within 1 second.

The module has an output range of +/-10 volts, 0 to 20 milliamps, and short-circuit protection, limiting the electronic current to 21 milliamps or less.

It also has 24-volt DC overvoltage protection and open-circuit detection, but is limited to current outputs only (note that outputs must be set to greater than 0.1 mA).

The 1756-IF4FXOF2F has backplane voltage and current ratings of 375 milliamps (at 5.1 volts DC) and 100 milliamps (at 24 volts DC).

The analog inputs and outputs are rated at -10 to 10 volts and 4 to 20 mA, respectively.

Module power consumption is 4.3 watts with 4.3 watts of voltage dissipation and 4.7 watts of current dissipation.

Thermal dissipation is 14.66 BTU/hr for voltage and 16.02 BTU/hr for current.

Current consumption is 375 mA at 5.1 volts and 100 mA at 24 volts.

It has a scan time update cycle of 300us minutes with sub-millisecond channel scanning and multi-module synchronized sampling.

The Allen-Bradley 1756-IF4FXOF2F is a ControlLogix high-speed analog combo module.

The module features four (4) high-speed, sub-millisecond differential inputs that accept ± 10V, 0 to 10V, 0 to 5V, and 0 to 20 mA signal ranges.

Each analog input channel has integrated over- and under-range indication. It is also equipped with two (2) high speed voltage or current output channels with output ranges of ± 10V and 0 to 20 mA.

The module's input channels convert received analog signals by successive approximation with 14-bit (±10.5V) and 12-bit (21 mA) conversion resolution.

It has a repeatability of ±1 least significant bit (LSB) and a calibration interval of 12 months.

The analog inputs are suitable for measuring analog process variables such as flow, level, pressure, temperature, viscosity, pH, turbidity, velocity and many other process variables.

The module's output channels have 13-bit (21 mA = 2.8 µA/bit) and 14-bit (21.8V = 1.3 mV/bit) output resolutions.

The output channels are converted using the R ladder DAC conversion method without missing codes.

The module's output analog signals can be used to command the modulating operation of control valves, variable frequency drives, dampers, shutters, signal converters, and sensors.

It can also be used to retransmit signals for use with indicators, recorders, and other devices.

The module's analog output can be connected to manual control commands, arithmetic operations, or the control output of a proportional-integral-derivative (PID) controller.

Technical Description of the 1756-IF4FXOF2F

Allen Bradley ControlLogix high-speed analog input/output module with four sub-millisecond, high-speed differential inputs.