1746-NO4I | Allen-Bradley SLC 500 Analog Output Module Supplier

What Is the 1746-NO4I?

When your SLC 500 system needs precise current output signals, the 1746-NO4I provides a reliable solution. This Allen-Bradley analog output module offers four isolated current channels, each capable of 0 to +20 mA output. It integrates seamlessly with SLC 500 fixed or modular hardware, making it a versatile choice for industrial automation.

Key Features & Technical Specs

• Output Channels: Four (4) current outputs with a range of 0 to +20 mA.
• Resolution: 14-bit resolution ensures fine control over output signals.
• Update Time: 512 microseconds for all channels in parallel.
• Step Response: 2.5 milliseconds at 95% for rapid signal changes.
• Backplane Current: 55 mA at 5 VDC and 195 mA at 24 VDC.
• Overrange Capability: 5% (0 to +21 mA minus 1 LSB) for flexible scaling.
• Current Output Coding: 0 to +32764 for digital representation.
• Operating Temperature: 0 to 60 degrees Celsius for industrial environments.

The 1746-NO4I uses a 14-bit R-2R ladder converter, providing reliable analog output for demanding applications.

Applications & Use Cases

In process control, the 1746-NO4I drives modulating valves and actuators with its 0 to +20 mA output. For PID controllers, it represents the control output signal. It also serves in data logging and signal retransmission. Its fast update time suits high-speed automation tasks.

Installation & Setup

Mount the 1746-NO4I in any SLC 500 chassis. Use shielded cable (e.g., Belden 8761) for wiring to minimize noise. The removable terminal block simplifies connections and module replacement. Ensure backplane current draw does not exceed power supply capacity.

Maintenance & Reliability

With no moving parts, the 1746-NO4I requires minimal maintenance. Operate within 0 to 60 degrees Celsius to ensure long life. Periodically inspect connections and verify output accuracy per manufacturer guidelines. Its solid-state design reduces downtime.

Compatibility & Integration

The 1746-NO4I works exclusively with SLC 500 systems, including fixed and modular controllers. It uses backplane power and communicates via the SLC 500 backplane. No additional communication protocols are required.

Troubleshooting & Common Issues

If outputs are incorrect, check wiring and ensure load resistance is within 0 to 500 ohms. Verify backplane power availability. LED status indicator helps diagnose module health. For persistent issues, consult the Allen-Bradley manual.

FAQ about 1746-NO4I

Q: What is the output range of the 1746-NO4I?

A: The 1746-NO4I provides 0 to +20 mA current output per channel.

Q: How many channels does the 1746-NO4I have?

A: It has four (4) current output channels.

Q: What is the update time for the 1746-NO4I?

A: The update time is 512 microseconds for all channels in parallel.

Q: Does the 1746-NO4I require external power?

A: It can use backplane power or an external 24 VDC supply (24 VDC +/- 10% at 195 mA max).

Q: What is the resolution of the 1746-NO4I?

A: The module has 14-bit resolution.

Product Support & Availability

The 1746-NO4I is available from Petro Auto Tech. Please verify current lifecycle status and availability before ordering. In stock and ready to ship.