Brand: Allen Bradley Description: Digital Input Module Condition: Brand New Certificate: COO TEST REPORT WARRANTY LETTER Warranty: 1 year Inventory Qty: 4 Payment Term: T/T Shipping Port: Shenzhen Allen Bradley 1756-IB32K is a 32 point digital input module, which belongs to the conformal coated type (marked with “K” at the end of the model number), and is designed for harsh and corrosive environments, providing enhanced protection. Its core function is to convert DC digital signals from external devices into signals that can be recognized by the control system and transmitted to the PLC central processor for processing. It is suitable for high-density input scenarios, and can reduce the occupancy of chassis slots to optimize the space of the control cabinet.
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Manufacture |
Allen Bradley |
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Model Number |
1756 |
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Ordering Number |
1756-IB32K |
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Catalog |
ControlLogix |
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Country Of Origin |
Switzerland |
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HS CODE |
8538900000 |
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Dimension |
12*6*2cm |
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Weight |
0.4kg |
Product Features
Allen Bradley 1756-IB32K is corrosion and humidity resistant, making it suitable for use in harsh industrial environments such as corrosive atmospheres and high humidity (with a dedicated RTB to maintain the protection level).
Allen Bradley 1756-IB32K supports Removal and Insertion Under Power (RIUP), which allows it to be plugged and unplugged while the system is energized, making it easy to maintain without interrupting the overall process.
Allen Bradley 1756-IB32K adopts the Producer/Consumer communication model, where the module actively sends data (without polling by the controller), and supports Change of State (COS) and Requested Packet Interval (RPI) data transmission methods to improve bandwidth utilization.
Allen Bradley 1756-IB32K is equipped with status indicators (OK, I/O status, fault FLT) to visualize communication, module health and input status.
Allen Bradley 1756-IB32K supports module-level fault reporting, and fault details (e.g., communication outages, wiring anomalies, etc.) can be viewed through Logix Designer software.
Allen Bradley 1756-IB32K can be configured with electronic keying (compatible modules, disabled keying, exact match) via software to prevent incorrect module installation and enhance system security.
Allen Bradley 1756-IB32K supports the configuration of filtering time (On/Off state transition filtering), COS triggering mode and other parameters through Logix Designer to adapt to different signal characteristics.
Allen Bradley 1756-IB32K is equipped with reverse polarity protection (common to DC modules except 1756-IG16 series) to prevent damage caused by wiring errors.
Product Working Principle
Allen Bradley 1756-IB32K the DC digital signal (On/Off) from external devices (e.g. proximity switches, limit switches) is connected to the module via terminals.
Allen Bradley 1756-IB32K is internally filtered by hardware (configurable filtering time) to eliminate noise, scanned by the ASIC chip (200 µs cycle time) and converted to a digital signal.
Allen Bradley 1756-IB32K uses the Producer/Consumer model and actively transmits data to the controller via the backplane when the signal undergoes a state change (COS trigger) or reaches a set RPI period.
Allen Bradley 1756-IB32K monitors its status (e.g., communication, faults) in real time and provides feedback to the controller through indicators and software tags for easy diagnosis and maintenance.
Product Applications
Due to its high density input, resistance to harsh environments and industrial grade reliability, Allen Bradley 1756-IB32K is widely used in:
Industrial automated production lines: automobile manufacturing, electronic assembly, food and beverage processing, etc., monitoring equipment start/stop, conveyor position, sensor status, etc.
Power systems: substations, power plants in monitoring the status of circuit breakers, protective device action signals, etc.
Rail transportation: monitoring track signals, turnout position, train proximity sensors, etc.
Municipal engineering: water treatment, sewage treatment plants to control the pump start and stop, valve switch status monitoring; city lighting system status feedback.
Harsh environment scenarios: chemical industry, metallurgy and other environments with corrosive gases or high humidity.
