OVERVIEW

Official designation: Allen-Bradley 931N-A221 (Bulletin 931 Nano, Analog Signal Converter)

Role/Application: A single-channel analog input to analog output converter providing 3-way galvanic isolation for reliable signal conversion and noise elimination in industrial control systems.

KEY SPECS SUMMARY

Power: 24V DC, 0.84 Watts max

Interfaces / Ports: Configurable analog current/voltage

Indicators: Sensor and signal error detection

Operating Temp: Minus 25 degrees C to plus 70 degrees C

Platform / Compatibility: DIN rail mounting, 6.1 mm width

Limit: High galvanic isolation 2.5 kV AC

Lifecycle: Refer to the latest manufacturer manual.

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the primary input and output signal ranges supported by the 931N-A221?

A: The module supports 0/4 to 20 mA and 0/1/2 to 10V analog input and output signals.

Wiring & Installation:

Q: How is the 931N-A221 module configured for specific signal ranges?

A: Configuration is performed using the onboard DIP switches, enabling quick and easy setup.

Troubleshooting & Compatibility:

Q: What is the device's accuracy and response time for analog signal conversion?

A: The device offers high accuracy up to 0.05 percent and a fast response time of less than 7 ms.

Replacement & Upgrades:

Q: Does the 931N-A221 support the optional power DIN rail system for power supply wiring?

A: Yes, it is compatible with the power bus DIN system, reducing device-specific supply wiring.