The Allen-Bradley 1756-IV16 is a high-density digital input module designed for the ControlLogix platform. This module provides 16 points of DC input sensing, facilitating reliable monitoring of field devices such as sensors, switches, and pushbuttons within industrial automation environments. Engineered for efficiency and robust performance, it operates within a 10-30 VDC range, making it suitable for standard 12V and 24V DC control systems.
Features
16 isolated DC input channels for versatile signal monitoring.
Wide operating voltage range (10-30 VDC) to accommodate various power supply configurations.
Fast input response times with a selectable filter time plus a base 2 ms delay.
Compact 20-pin connector interface for streamlined wiring and maintenance.
Low backplane power consumption to optimize rack power budget.
Technical Specifications
Model
1756-IV16
Input Points
16
Voltage Category
12/24V DC
Operating Voltage Range
10-30V DC
Input Delay Time
2 ms + filter time
Min. Operating Current
2 mA at 10V DC
Max. Operating Current
10 mA at 30V DC
Backplane Current (5V)
110 mA
Backplane Current (24V)
2 mA
Installation Guidelines
Ensure the ControlLogix chassis is powered down before inserting or removing the module to prevent electrical arcing or damage to the backplane.
Utilize a compatible 20-pin Removable Terminal Block (RTB) for field wiring connections.
Maintain proper grounding practices for the chassis to minimize electromagnetic interference (EMI).
Route signal wiring away from high-voltage cables and motor leads to ensure signal integrity.
Verify that the input voltage levels do not exceed the specified 30V DC maximum to avoid module damage.
FAQ
Is the 1756-IV16 compatible with standard ControlLogix chassis? Yes, this module is designed for any standard ControlLogix I/O chassis.
What is the primary function of this module? The 1756-IV16 acts as a sink input module, detecting DC signals from field devices and reporting their status to the ControlLogix processor.
Does this module require a specific terminal block? Yes, it utilizes a standard 20-pin removable terminal block, which must be ordered separately if not already present in your system.
