OVERVIEW

Official designation: Allen-Bradley 1738-ADN12 (ArmorPoint I/O, DeviceNet Adapter)

Role/Application: An adapter module that provides DeviceNet communication and powers the ArmorPoint I/O backplane, featuring an IP67-rated enclosure for on-machine installation in harsh industrial environments.

KEY SPECS SUMMARY

Power: 24V DC (10V to 28.8V range)

Interfaces / Ports: M12 network, M12 auxiliary power

Indicators: Network status, Module status, Power, PointBus

Operating Temp: -20 to 60 degrees C

Platform / Compatibility: DeviceNet, IP67 enclosure, Logix

Limit: 1.0 Amp max backplane current

Lifecycle: Current Product

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum number of I/O modules supported on the backplane by the adapter?

A: The adapter supports a maximum of 63 ArmorPoint I/O modules on a single DeviceNet node.

Wiring & Installation:

Q: What are the nominal current and maximum power consumption ratings for the 1738-ADN12 adapter?

A: The nominal current is 50 mA at 24 Volts DC, with a maximum power consumption of 8.1 Watts.

Troubleshooting & Compatibility:

Q: What are the available baud rate options for the 1738-ADN12 on the DeviceNet network?

A: The DeviceNet baud rates supported are 125, 250, and 500 Kilobits per second.

Replacement & Upgrades:

Q: How can the 1.0 Amp backplane current limit be extended for additional I/O modules?

A: The backplane current can be extended beyond 1.0 Amp using an external 1738-EP24DC power supply module.