Allen Bradley 1746-NO4I /A SLC500 Analog Output Module

Allen-Bradley 1746-NO4I SLC 500 Analog Output Module

The Allen-Bradley 1746-NO4I is a four-channel analog output module designed for integration with the SLC 500 PLC system. It delivers precise current outputs ranging from 0 to 20 mA, making it suitable for driving modulating devices, controllers, or transmitting signals to multiple devices.

Key Features

• Output Channels: Four current output channels.
• Current Output Range: 0 to 20 mA.
• Resolution: 14 bits, ensuring accurate signal representation.
• Step Response: 2.5 milliseconds at 95%, facilitating rapid system responses.
• Backplane Current Draw: 55 mA at 5 VDC and 195 mA at 24 VDC.
• Load Range: 0 to 500 ohms, accommodating various device requirements.
• Operating Temperature: 0 to 60°C, suitable for diverse industrial environments.

Technical Specifications

• Full-Scale Output: 21 mA.
• Overrange Capability: 5% (0 to 21 mA).
• Update Time: 512 microseconds for all channels in parallel.
• Power Supply Voltage: 24 VDC ±10% at 195 mA maximum.
• Backplane Isolation: 500 VDC.
• Ambient Humidity: 5 to 95% non-condensing.

Installation and Wiring

The 1746-NO4I module is designed for easy integration into the SLC 500 chassis. It features a removable terminal block to simplify wiring and module replacement. For optimal performance, use shielded communication cables, such as Belden 8761, and keep cable lengths as short as possible to minimize signal interference.

Applications

This module is ideal for applications requiring precise current control, including:

• Driving modulating instruments and devices.
• Providing control commands in PID control loops.
• Re-transmitting signals for indication, data logging, or signal conversion purposes.

With its high resolution and rapid response time, the Allen-Bradley 1746-NO4I ensures accurate and efficient control in various industrial automation processes.