OVERVIEW

Official designation: Allen-Bradley 1404-M505A-RIO (PowerMonitor 3000, Master Module)

Role/Application: Master module providing three-phase power metering, setpoints, I/O, and data logging with native Remote I/O and RS-485 ports for industrial power management.

KEY SPECS SUMMARY

Power: 120 V/240 V AC or 125 V/250 V DC

Interfaces / Ports: Remote I/O, native RS-485

Indicators: Six 2-color status indicators

Operating Temp: Refer to the latest manufacturer manual.

Platform / Compatibility: PowerMonitor 3000 system, requires RIO adapter

Limit: Current overload withstand is 200 Amps for 1 second

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What level of revenue metering accuracy is offered by the 1404-M505A-RIO master module?

A: The module offers revenue metering compliance to 0.5 percent accuracy, providing reliable data.

Wiring & Installation:

Q: What critical safety procedure must be followed during installation related to the current transformers (CTs)?

A: Never open a current transformer secondary circuit with primary current applied; use a shorting terminal block. [attachment_0](attachment)

Troubleshooting & Compatibility:

Q: What are the two primary communication protocols supported by this master module?

A: The module supports the legacy Remote I/O (RIO) protocol and the native RS-485 communication protocol.

Replacement & Upgrades:

Q: Is this master module fixed in its metering capability or is it upgradable?

A: The 1404-M505A-RIO model is upgradable to an M6 specification via firmware or hardware key.