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Description：

The 1756-IV32 is a digital input module having 32 inputs with 16 points per group.   For the 1756-IV32 module, you can only use the 1756-TBCH or 1756-TBS6H RTB. The 1756-IV32 has an operating voltage range of 10 to 30 Volts DC and is a 12/24 Volts DC source module. The current draw of this module is 120 milliamps at 5.1 Volts and 2 milliamps at 24 Volts. It has a total backplane power of 0.66 Watts and a nominal input voltage of 24 Volts DC. It has a maximum inrush current of 250 milliamps, decaying to <37% in 22 milliseconds, without activation, and a maximum input impedance of 8.6 kΩ at 30 Volts DC. The screw to backplane input delay times of the 1756-IV32 are as follows: from 'on' to 'off', it is the hardware delay of a nominal of 540 microseconds up to a maximum of 2 milliseconds plus the user-configurable filter time of either 0 milliseconds, 1 milliseconds, 2 milliseconds, 9 milliseconds, or 18 milliseconds. From 'off' to 'on', it is the hardware delay of a nominal of 350 microseconds up to a maximum of 1 milliseconds plus the user-configurable filter time of either 0 milliseconds, 1 milliseconds, or 2 milliseconds. When the 1756-IV32 module is on an off-state, it has a maximum current of 1.5 mA and a maximum voltage of 5 Volts. But when it is on an on-state, the module has a minimum current of 2 milliamps at 10 Volts DC and a maximum current of 3.5 milliamps at 30 Volts DC.

Specification：

Frequently asked questions

Q1: What is the 1756-IV32 Digital Input Module?

A: The 1756-IV32 is a digital input module . It receives 12–24 V DC digital signals from field devices and transmits their status to the PLC for monitoring and control.

Q2: How many input channels does the 1756-IV32 provide?

A: The module features 32 digital input channels, allowing multiple sensors and switches to be monitored simultaneously.

Q3: What is the rated input voltage of the 1756-IV32?

A: The module is designed for 12–24 V DC digital input signals, making it compatible with many standard industrial devices.

Q4: What is the operating voltage range of the module?

A: The 1756-IV32 supports an operating voltage range of 10–30 V DC, providing flexibility for applications with normal supply voltage variations.

Product Applications

Oil, Chemical and Natural Gas: Tank farm monitoring, substations of distributed control systems (DCS) for production units.

Metallurgy and Iron Industry: Blast furnace charge line control, high-frequency cold shearing lines for steel rolling, continuous casting machine control.

Power and Energy Systems: Auxiliary equipment control for thermal power plants, status monitoring of hydropower station units, integrated of substations.

Large-scale Water Treatment and Environmental Protection Projects:  systems for urban waterworks and wastewater treatment plants.