OVERVIEW

Official designation: Allen-Bradley 931S-C124 (Bulletin 931 Smart, Dual Channel Converter)

Role/Application: A dual-channel, 24V DC powered current converter providing bidirectional HART communication and 5-way galvanic isolation for reliable process control signal monitoring.

KEY SPECS SUMMARY

Power: 24V DC nominal, 20 to 30V DC range

Interfaces / Ports: Dual current input, Dual current output

Indicators: Sensor/signal error detection included

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

Platform / Compatibility: DIN rail mounting, HART transparent

Limit: 5-way galvanic isolation, 2.5 kV AC

Lifecycle: Active product status

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum load resistance and response time for the analog output signal?

A: The maximum load resistance is 300 ohms, with a fast response time of 0.5 ms maximum.

Wiring & Installation:

Q: What is the benefit of the power rail option on the 931S-C124 unit?

A: The power rail option reduces field wiring, allowing one feed module to power up to 75 devices.

Troubleshooting & Compatibility:

Q: What is the purpose of the 5-way galvanic isolation feature in the converter?

A: The 5-way galvanic isolation eliminates ground loop errors between the power supply, two inputs, and two outputs.

Replacement & Upgrades:

Q: Does the 931S-C124 require configuration for the current input and output signals?

A: No, this is a fixed range current input to current output converter with HART transparency.