Features:
- Two-channel analog current-output base block for CompactBlock LDX distributed I/O.
- DeviceNet network connection with screw-clamp terminal construction.
- Current-output designation TN0C2, distinct from voltage-output and analog-input variants.
1790D-TN0C2 brings two current-output channels to a distributed DeviceNet station. It is not a PROFIBUS interface, so the network type matters before any replacement is selected.
The screw-clamp base-block form is part of this full catalog identity. A D-shell or voltage-output block from the same family is a different product and should not be substituted by a shortened family name.
Rockwell lists 1790D-TN0C2 as discontinued. For a maintained installation, keep the node address, configuration record and connected channel assignments with the removed block during service planning.
1790D-TN0C2 | Manufacturer: Allen-Bradley | Product Type: CompactBlock LDX DeviceNet Current-Output Base Block. Apter Power supports exact-model documentation review, quotation and sourcing for existing installations.
Allen-Bradley 1790D-TN0C2 Analog Current Output Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- 1790D-TN0C2 is the two-channel current-output base block in this CompactBlock LDX family.
- The TN0C2 suffix identifies a current-output version; TN0V2 names a voltage-output variant.
- This TN version uses screw-clamp terminals; the N0C2 D-shell version has a different connector arrangement.
- Keep the complete catalog code and a photo of the removed terminal face when requesting a spare.
- 1790D-TN0C2 communicates as a DeviceNet distributed I/O node, not as a PROFIBUS module.
- Before replacement, capture the existing node address and the controller-side configuration record.
- Compare the available DeviceNet connection and screw-clamp terminal arrangement with the removed unit.
- Reapply the site-approved configuration using the Rockwell module instructions.
- The base block provides two analog current-output channels for field devices.
- Record which plant loop uses each channel before disconnecting the old block.
- Use the Rockwell terminal diagram and site isolation procedure for any wiring change.
- If a loop does not respond after replacement, check the recorded channel assignment and module status before altering the control program.
- 1790D-TN0C2 fits distributed installations that already use CompactBlock LDX DeviceNet I/O.
- It provides two commanded current outputs for existing field-control loops.
- The screw-clamp form supports maintenance where that terminal style is installed.
- For a discontinued-node repair, exact catalog matching preserves the original network and terminal arrangement.